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// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import '@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import '@openzeppelin/contracts/token/ERC20/ERC20.sol';
import '@openzeppelin/contracts/utils/structs/EnumerableSet.sol';
import '@openzeppelin/contracts/utils/Address.sol';
import '@openzeppelin/contracts/utils/math/SafeMath.sol';
import './libraries/Math.sol';
import './interfaces/IVePtp.sol';
import './interfaces/IPtp.sol';
import './interfaces/IMasterPlatypus.sol';
import './interfaces/IRewarder.sol';

/// MasterPlatypus is a boss. He says "go f your blocks maki boy, I'm gonna use timestamp instead"
/// In addition, he feeds himself from Venom. So, vePtp holders boost their (non-dialuting) emissions.
/// This contract rewards users in function of their amount of lp staked (dialuting pool) factor (non-dialuting pool)
/// Factor and sumOfFactors are updated by contract VePtp.sol after any vePtp minting/burning (veERC20Upgradeable hook).
/// Note that it's ownable and the owner wields tremendous power. The ownership
/// will be transferred to a governance smart contract once Platypus is sufficiently
/// distributed and the community can show to govern itself.
contract MasterPlatypus is
    Initializable,
    OwnableUpgradeable,
    ReentrancyGuardUpgradeable,
    PausableUpgradeable,
    IMasterPlatypus
{
    using SafeERC20 for IERC20;
    using EnumerableSet for EnumerableSet.AddressSet;

    // Info of each user.
    struct UserInfo {
        uint256 amount; // How many LP tokens the user has provided.
        uint256 rewardDebt; // Reward debt. See explanation below.
        uint256 factor; // non-dialuting factor = sqrt (lpAmount * vePtp.balanceOf())
        //
        // We do some fancy math here. Basically, any point in time, the amount of PTPs
        // entitled to a user but is pending to be distributed is:
        //
        //   ((user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12) -
        //        user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accPtpPerShare`, `accPtpPerFactorShare` (and `lastRewardTimestamp`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken; // Address of LP token contract.
        uint256 allocPoint; // How many allocation points assigned to this pool. PTPs to distribute per second.
        uint256 lastRewardTimestamp; // Last timestamp that PTPs distribution occurs.
        uint256 accPtpPerShare; // Accumulated PTPs per share, times 1e12.
        IRewarder rewarder;
        uint256 sumOfFactors; // the sum of all non dialuting factors by all of the users in the pool
        uint256 accPtpPerFactorShare; // accumulated ptp per factor share
    }

    // The strongest platypus out there (ptp token).
    IERC20 public ptp;
    // Venom does not seem to hurt the Platypus, it only makes it stronger.
    IVePtp public vePtp;
    // New Master Platypus address for future migrations
    IMasterPlatypus newMasterPlatypus;
    // PTP tokens created per second.
    uint256 public ptpPerSec;
    // Emissions: both must add to 1000 => 100%
    // Dialuting emissions repartition (e.g. 300 for 30%)
    uint256 public dialutingRepartition;
    // Non-dialuting emissions repartition (e.g. 500 for 50%)
    uint256 public nonDialutingRepartition;
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint;
    // The timestamp when PTP mining starts.
    uint256 public startTimestamp;
    // Info of each pool.
    PoolInfo[] public poolInfo;
    // Set of all LP tokens that have been added as pools
    EnumerableSet.AddressSet private lpTokens;
    // Info of each user that stakes LP tokens.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    // Amount of claimable ptp the user has
    mapping(uint256 => mapping(address => uint256)) public claimablePtp;

    event Add(uint256 indexed pid, uint256 allocPoint, IERC20 indexed lpToken, IRewarder indexed rewarder);
    event Set(uint256 indexed pid, uint256 allocPoint, IRewarder indexed rewarder, bool overwrite);
    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event DepositFor(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event UpdatePool(uint256 indexed pid, uint256 lastRewardTimestamp, uint256 lpSupply, uint256 accPtpPerShare);
    event Harvest(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event UpdateEmissionRate(address indexed user, uint256 ptpPerSec);
    event UpdateEmissionRepartition(
        address indexed user,
        uint256 dialutingRepartition,
        uint256 nonDialutingRepartition
    );
    event UpdateVePTP(address indexed user, address oldVePTP, address newVePTP);

    /// @dev Modifier ensuring that certain function can only be called by VePtp
    modifier onlyVePtp() {
        require(address(vePtp) == msg.sender, 'notVePtp: wut?');
        _;
    }

    function initialize(
        IERC20 _ptp,
        IVePtp _vePtp,
        uint256 _ptpPerSec,
        uint256 _dialutingRepartition,
        uint256 _startTimestamp
    ) external initializer {
        require(address(_ptp) != address(0), 'ptp address cannot be zero');
        require(address(_vePtp) != address(0), 'vePtp address cannot be zero');
        require(_ptpPerSec != 0, 'ptp per sec cannot be zero');
        require(_dialutingRepartition <= 1000, 'dialuting repartition must be in range 0, 1000');

        __Ownable_init();
        __ReentrancyGuard_init_unchained();
        __Pausable_init_unchained();

        ptp = _ptp;
        vePtp = _vePtp;
        ptpPerSec = _ptpPerSec;
        dialutingRepartition = _dialutingRepartition;
        nonDialutingRepartition = 1000 - _dialutingRepartition;
        startTimestamp = _startTimestamp;
        totalAllocPoint = 0;
    }

    /**
     * @dev pause pool, restricting certain operations
     */
    function pause() external onlyOwner {
        _pause();
    }

    /**
     * @dev unpause pool, enabling certain operations
     */
    function unpause() external onlyOwner {
        _unpause();
    }

    function setNewMasterPlatypus(IMasterPlatypus _newMasterPlatypus) external onlyOwner {
        newMasterPlatypus = _newMasterPlatypus;
    }

    /// @notice returns pool length
    function poolLength() external view override returns (uint256) {
        return poolInfo.length;
    }

    /// @notice Add a new lp to the pool. Can only be called by the owner.
    /// @dev Reverts if the same LP token is added more than once.
    /// @param _allocPoint allocation points for this LP
    /// @param _lpToken the corresponding lp token
    /// @param _rewarder the rewarder
    function add(
        uint256 _allocPoint,
        IERC20 _lpToken,
        IRewarder _rewarder
    ) public onlyOwner {
        require(Address.isContract(address(_lpToken)), 'add: LP token must be a valid contract');
        require(
            Address.isContract(address(_rewarder)) || address(_rewarder) == address(0),
            'add: rewarder must be contract or zero'
        );
        require(!lpTokens.contains(address(_lpToken)), 'add: LP already added');

        // update all pools
        massUpdatePools();

        // update last time rewards were calculated to now
        uint256 lastRewardTimestamp = block.timestamp > startTimestamp ? block.timestamp : startTimestamp;

        // add _allocPoint to total alloc points
        totalAllocPoint = totalAllocPoint + _allocPoint;

        // update PoolInfo with the new LP
        poolInfo.push(
            PoolInfo({
                lpToken: _lpToken,
                allocPoint: _allocPoint,
                lastRewardTimestamp: lastRewardTimestamp,
                accPtpPerShare: 0,
                rewarder: _rewarder,
                sumOfFactors: 0,
                accPtpPerFactorShare: 0
            })
        );

        // add lpToken to the lpTokens enumerable set
        lpTokens.add(address(_lpToken));
        emit Add(poolInfo.length - 1, _allocPoint, _lpToken, _rewarder);
    }

    /// @notice Update the given pool's PTP allocation point. Can only be called by the owner.
    /// @param _pid the pool id
    /// @param _allocPoint allocation points
    /// @param _rewarder the rewarder
    /// @param overwrite overwrite rewarder?
    function set(
        uint256 _pid,
        uint256 _allocPoint,
        IRewarder _rewarder,
        bool overwrite
    ) public onlyOwner {
        require(
            Address.isContract(address(_rewarder)) || address(_rewarder) == address(0),
            'set: rewarder must be contract or zero'
        );
        massUpdatePools();
        totalAllocPoint = totalAllocPoint - poolInfo[_pid].allocPoint + _allocPoint;
        poolInfo[_pid].allocPoint = _allocPoint;
        if (overwrite) {
            poolInfo[_pid].rewarder = _rewarder;
        }
        emit Set(_pid, _allocPoint, overwrite ? _rewarder : poolInfo[_pid].rewarder, overwrite);
    }

    /// @notice View function to see pending PTPs on frontend.
    /// @param _pid the pool id
    /// @param _user the user address
    /// TODO include factor operations
    function pendingTokens(uint256 _pid, address _user)
        external
        view
        override
        returns (
            uint256 pendingPtp,
            address bonusTokenAddress,
            string memory bonusTokenSymbol,
            uint256 pendingBonusToken
        )
    {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accPtpPerShare = pool.accPtpPerShare;
        uint256 accPtpPerFactorShare = pool.accPtpPerFactorShare;
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (block.timestamp > pool.lastRewardTimestamp && lpSupply != 0) {
            uint256 secondsElapsed = block.timestamp - pool.lastRewardTimestamp;
            uint256 ptpReward = (secondsElapsed * ptpPerSec * pool.allocPoint) / totalAllocPoint;
            accPtpPerShare += (ptpReward * 1e12 * dialutingRepartition) / (lpSupply * 1000);
            if (pool.sumOfFactors != 0) {
                accPtpPerFactorShare += (ptpReward * 1e12 * nonDialutingRepartition) / (pool.sumOfFactors * 1000);
            }
        }
        pendingPtp =
            ((user.amount * accPtpPerShare + user.factor * accPtpPerFactorShare) / 1e12) +
            claimablePtp[_pid][_user] -
            user.rewardDebt;
        // If it's a double reward farm, we return info about the bonus token
        if (address(pool.rewarder) != address(0)) {
            (bonusTokenAddress, bonusTokenSymbol) = rewarderBonusTokenInfo(_pid);
            pendingBonusToken = pool.rewarder.pendingTokens(_user);
        }
    }

    /// @notice Get bonus token info from the rewarder contract for a given pool, if it is a double reward farm
    /// @param _pid the pool id
    function rewarderBonusTokenInfo(uint256 _pid)
        public
        view
        override
        returns (address bonusTokenAddress, string memory bonusTokenSymbol)
    {
        PoolInfo storage pool = poolInfo[_pid];
        if (address(pool.rewarder) != address(0)) {
            bonusTokenAddress = address(pool.rewarder.rewardToken());
            bonusTokenSymbol = IERC20Metadata(pool.rewarder.rewardToken()).symbol();
        }
    }

    /// @notice Update reward variables for all pools.
    /// @dev Be careful of gas spending!
    function massUpdatePools() public override {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            _updatePool(pid);
        }
    }

    /// @notice Update reward variables of the given pool to be up-to-date.
    /// @param _pid the pool id
    function updatePool(uint256 _pid) external override {
        _updatePool(_pid);
    }

    function _updatePool(uint256 _pid) private {
        PoolInfo storage pool = poolInfo[_pid];
        // update only if now > last time we updated rewards
        if (block.timestamp > pool.lastRewardTimestamp) {
            uint256 lpSupply = pool.lpToken.balanceOf(address(this));

            // if balance of lp supply is 0, update lastRewardTime and quit function
            if (lpSupply == 0) {
                pool.lastRewardTimestamp = block.timestamp;
                return;
            }
            // calculate seconds elapsed since last update
            uint256 secondsElapsed = block.timestamp - pool.lastRewardTimestamp;

            // calculate ptp reward
            uint256 ptpReward = (secondsElapsed * ptpPerSec * pool.allocPoint) / totalAllocPoint;

            // update accPtpPerShare to reflect dialuting rewards
            pool.accPtpPerShare += (ptpReward * 1e12 * dialutingRepartition) / (lpSupply * 1000);

            // update accPtpPerFactorShare to reflect non-dialuting rewards
            if (pool.sumOfFactors == 0) {
                pool.accPtpPerFactorShare = 0;
            } else {
                pool.accPtpPerFactorShare += (ptpReward * 1e12 * nonDialutingRepartition) / (pool.sumOfFactors * 1000);
            }

            // update lastRewardTimestamp to now
            pool.lastRewardTimestamp = block.timestamp;
            emit UpdatePool(_pid, pool.lastRewardTimestamp, lpSupply, pool.accPtpPerShare);
        }
    }

    /// @notice Helper function to migrate fund from multiple pools to the new MasterPlatypus.
    /// @notice user must initiate transaction from masterchef
    /// @dev Assume the orginal MasterPlatypus has stopped emisions
    /// hence we can skip updatePool() to save gas cost
    function migrate(uint256[] calldata _pids) external override nonReentrant {
        require(address(newMasterPlatypus) != (address(0)), 'to where?');

        _multiClaim(_pids);
        for (uint256 i = 0; i < _pids.length; ++i) {
            uint256 pid = _pids[i];
            UserInfo storage user = userInfo[pid][msg.sender];

            if (user.amount > 0) {
                PoolInfo storage pool = poolInfo[pid];
                pool.lpToken.approve(address(newMasterPlatypus), user.amount);
                newMasterPlatypus.depositFor(pid, user.amount, msg.sender);

                user.amount = 0;
                // As we assume the MasterPlatypus has stopped emission so that we can skip updating
                // user.factor and pool.sumOfFactors
            }
        }
    }

    /// @notice Deposit LP tokens to MasterChef for PTP allocation on behalf of user
    /// @dev user must initiate transaction from masterchef
    /// @param _pid the pool id
    /// @param _amount amount to deposit
    /// @param _user the user being represented
    function depositFor(
        uint256 _pid,
        uint256 _amount,
        address _user
    ) external override nonReentrant {
        require(tx.origin == _user, 'depositFor: wut?');

        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];

        // update pool in case user has deposited
        _updatePool(_pid);
        if (user.amount > 0) {
            // Harvest PTP
            uint256 pending = ((user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12) +
                claimablePtp[_pid][msg.sender] -
                user.rewardDebt;
            claimablePtp[_pid][msg.sender] = 0;

            pending = safePtpTransfer(payable(_user), pending);
            emit Harvest(_user, _pid, pending);
        }

        // update amount of lp staked by user
        user.amount += _amount;

        // update non-dialuting factor
        uint256 oldFactor = user.factor;
        user.factor = Math.sqrt(user.amount * vePtp.balanceOf(_user));
        pool.sumOfFactors = pool.sumOfFactors + user.factor - oldFactor;

        // update reward debt
        user.rewardDebt = (user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12;

        IRewarder rewarder = poolInfo[_pid].rewarder;
        if (address(rewarder) != address(0)) {
            rewarder.onPtpReward(_user, user.amount);
        }

        pool.lpToken.safeTransferFrom(msg.sender, address(this), _amount);
        emit DepositFor(_user, _pid, _amount);
    }

    /// @notice Deposit LP tokens to MasterChef for PTP allocation.
    /// @dev it is possible to call this function with _amount == 0 to claim current rewards
    /// @param _pid the pool id
    /// @param _amount amount to deposit
    function deposit(uint256 _pid, uint256 _amount)
        external
        override
        nonReentrant
        whenNotPaused
        returns (uint256, uint256)
    {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        _updatePool(_pid);
        uint256 pending;
        if (user.amount > 0) {
            // Harvest PTP
            pending =
                ((user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12) +
                claimablePtp[_pid][msg.sender] -
                user.rewardDebt;
            claimablePtp[_pid][msg.sender] = 0;

            pending = safePtpTransfer(payable(msg.sender), pending);
            emit Harvest(msg.sender, _pid, pending);
        }

        // update amount of lp staked by user
        user.amount += _amount;

        // update non-dialuting factor
        uint256 oldFactor = user.factor;
        user.factor = Math.sqrt(user.amount * vePtp.balanceOf(msg.sender));
        pool.sumOfFactors = pool.sumOfFactors + user.factor - oldFactor;

        // update reward debt
        user.rewardDebt = (user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12;

        IRewarder rewarder = poolInfo[_pid].rewarder;
        uint256 additionalRewards;
        if (address(rewarder) != address(0)) {
            additionalRewards = rewarder.onPtpReward(msg.sender, user.amount);
        }

        pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
        emit Deposit(msg.sender, _pid, _amount);
        return (pending, additionalRewards);
    }

    /// @notice claims rewards for multiple pids
    /// @param _pids array pids, pools to claim
    function multiClaim(uint256[] memory _pids)
        external
        override
        nonReentrant
        whenNotPaused
        returns (
            uint256,
            uint256[] memory,
            uint256[] memory
        )
    {
        return _multiClaim(_pids);
    }

    /// @notice private function to claim rewards for multiple pids
    /// @param _pids array pids, pools to claim
    function _multiClaim(uint256[] memory _pids)
        private
        returns (
            uint256,
            uint256[] memory,
            uint256[] memory
        )
    {
        // accumulate rewards for each one of the pids in pending
        uint256 pending;
        uint256[] memory amounts = new uint256[](_pids.length);
        uint256[] memory additionalRewards = new uint256[](_pids.length);
        for (uint256 i = 0; i < _pids.length; ++i) {
            _updatePool(_pids[i]);
            PoolInfo storage pool = poolInfo[_pids[i]];
            UserInfo storage user = userInfo[_pids[i]][msg.sender];
            if (user.amount > 0) {
                // increase pending to send all rewards once
                uint256 poolRewards = ((user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) /
                    1e12) +
                    claimablePtp[_pids[i]][msg.sender] -
                    user.rewardDebt;

                claimablePtp[_pids[i]][msg.sender] = 0;

                // update reward debt
                user.rewardDebt = (user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12;

                // increase pending
                pending += poolRewards;

                amounts[i] = poolRewards;
                // if existant, get external rewarder rewards for pool
                IRewarder rewarder = pool.rewarder;
                if (address(rewarder) != address(0)) {
                    additionalRewards[i] = rewarder.onPtpReward(msg.sender, user.amount);
                }
            }
        }
        // transfer all remaining rewards
        uint256 transfered = safePtpTransfer(payable(msg.sender), pending);
        if (transfered != pending) {
            for (uint256 i = 0; i < _pids.length; ++i) {
                amounts[i] = (transfered * amounts[i]) / pending;
                emit Harvest(msg.sender, _pids[i], amounts[i]);
            }
        } else {
            for (uint256 i = 0; i < _pids.length; ++i) {
                // emit event for pool
                emit Harvest(msg.sender, _pids[i], amounts[i]);
            }
        }

        return (transfered, amounts, additionalRewards);
    }

    /// @notice Withdraw LP tokens from MasterPlatypus.
    /// @notice Automatically harvest pending rewards and sends to user
    /// @param _pid the pool id
    /// @param _amount the amount to withdraw
    function withdraw(uint256 _pid, uint256 _amount)
        external
        override
        nonReentrant
        whenNotPaused
        returns (uint256, uint256)
    {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, 'withdraw: not good');

        _updatePool(_pid);

        // Harvest PTP
        uint256 pending = ((user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12) +
            claimablePtp[_pid][msg.sender] -
            user.rewardDebt;
        claimablePtp[_pid][msg.sender] = 0;

        pending = safePtpTransfer(payable(msg.sender), pending);
        emit Harvest(msg.sender, _pid, pending);

        // for non-dialuting factor
        uint256 oldFactor = user.factor;

        // update amount of lp staked
        user.amount = user.amount - _amount;

        // update non-dialuting factor
        user.factor = Math.sqrt(user.amount * vePtp.balanceOf(msg.sender));
        pool.sumOfFactors = pool.sumOfFactors + user.factor - oldFactor;

        // update reward debt
        user.rewardDebt = (user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12;

        IRewarder rewarder = poolInfo[_pid].rewarder;
        uint256 additionalRewards = 0;
        if (address(rewarder) != address(0)) {
            additionalRewards = rewarder.onPtpReward(msg.sender, user.amount);
        }

        pool.lpToken.safeTransfer(address(msg.sender), _amount);
        emit Withdraw(msg.sender, _pid, _amount);
        return (pending, additionalRewards);
    }

    /// @notice Withdraw without caring about rewards. EMERGENCY ONLY.
    /// @param _pid the pool id
    function emergencyWithdraw(uint256 _pid) public nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        pool.lpToken.safeTransfer(address(msg.sender), user.amount);

        // update non-dialuting factor
        pool.sumOfFactors = pool.sumOfFactors - user.factor;
        user.factor = 0;

        // update dialuting factors
        user.amount = 0;
        user.rewardDebt = 0;

        emit EmergencyWithdraw(msg.sender, _pid, user.amount);
    }

    /// @notice Safe ptp transfer function, just in case if rounding error causes pool to not have enough PTPs.
    /// @param _to beneficiary
    /// @param _amount the amount to transfer
    function safePtpTransfer(address payable _to, uint256 _amount) private returns (uint256) {
        uint256 ptpBal = ptp.balanceOf(address(this));

        // perform additional check in case there are no more ptp tokens to distribute.
        // emergency withdraw would be necessary
        require(ptpBal > 0, 'No tokens to distribute');

        if (_amount > ptpBal) {
            ptp.transfer(_to, ptpBal);
            return ptpBal;
        } else {
            ptp.transfer(_to, _amount);
            return _amount;
        }
    }

    /// @notice updates emission rate
    /// @param _ptpPerSec ptp amount to be updated
    /// @dev Pancake has to add hidden dummy pools inorder to alter the emission,
    /// @dev here we make it simple and transparent to all.
    function updateEmissionRate(uint256 _ptpPerSec) external onlyOwner {
        massUpdatePools();
        ptpPerSec = _ptpPerSec;
        emit UpdateEmissionRate(msg.sender, _ptpPerSec);
    }

    /// @notice updates emission repartition
    /// @param _dialutingRepartition the future dialuting repartition
    function updateEmissionRepartition(uint256 _dialutingRepartition) external onlyOwner {
        require(_dialutingRepartition <= 1000);
        massUpdatePools();
        dialutingRepartition = _dialutingRepartition;
        nonDialutingRepartition = 1000 - _dialutingRepartition;
        emit UpdateEmissionRepartition(msg.sender, _dialutingRepartition, 1000 - _dialutingRepartition);
    }

    /// @notice updates vePtp address
    /// @param _newVePtp the new VePtp address
    function setVePtp(IVePtp _newVePtp) external onlyOwner {
        require(address(_newVePtp) != address(0));
        massUpdatePools();
        IVePtp oldVePtp = vePtp;
        vePtp = _newVePtp;
        emit UpdateVePTP(msg.sender, address(oldVePtp), address(_newVePtp));
    }

    /// @notice updates factor after any vePtp token operation (minting/burning)
    /// @param _user the user to update
    /// @param _newVePtpBalance the amount of vePTP
    /// @dev can only be called by vePtp
    function updateFactor(address _user, uint256 _newVePtpBalance) external override onlyVePtp {
        // loop over each pool : beware gas cost!
        uint256 length = poolInfo.length;

        for (uint256 pid = 0; pid < length; ++pid) {
            UserInfo storage user = userInfo[pid][_user];

            // skip if user doesn't have any deposit in the pool
            if (user.amount == 0) {
                continue;
            }

            PoolInfo storage pool = poolInfo[pid];

            // first, update pool
            _updatePool(pid);
            // calculate pending
            uint256 pending = ((user.amount * pool.accPtpPerShare + user.factor * pool.accPtpPerFactorShare) / 1e12) -
                user.rewardDebt;
            // increase claimablePtp
            claimablePtp[pid][_user] += pending;
            // get oldFactor
            uint256 oldFactor = user.factor; // get old factor
            // calculate newFactor using
            uint256 newFactor = Math.sqrt(_newVePtpBalance * user.amount);
            // update user factor
            user.factor = newFactor;
            // update reward debt, take into account newFactor
            user.rewardDebt = (user.amount * pool.accPtpPerShare + newFactor * pool.accPtpPerFactorShare) / 1e12;
            // also, update sumOfFactors
            pool.sumOfFactors = pool.sumOfFactors + newFactor - oldFactor;
        }
    }

    /// @notice In case we need to manually migrate PTP funds from MasterChef
    /// Sends all remaining ptp from the contract to the owner
    function emergencyPtpWithdraw() external onlyOwner {
        ptp.safeTransfer(address(msg.sender), ptp.balanceOf(address(this)));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal initializer {
        __Context_init_unchained();
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal initializer {
        _setOwner(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuardUpgradeable is Initializable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    function __ReentrancyGuard_init() internal initializer {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal initializer {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    function __Pausable_init() internal initializer {
        __Context_init_unchained();
        __Pausable_init_unchained();
    }

    function __Pausable_init_unchained() internal initializer {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastvalue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastvalue;
                // Update the index for the moved value
                set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        return _values(set._inner);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

// a library for performing various math operations

library Math {
    uint256 public constant WAD = 10**18;

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }

    //rounds to zero if x*y < WAD / 2
    function wmul(uint256 x, uint256 y) internal pure returns (uint256) {
        return ((x * y) + (WAD / 2)) / WAD;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';
import './IVeERC20.sol';

/**
 * @dev Interface of the VePtp
 */
interface IVePtp is IVeERC20, IERC721Receiver {
    function isUser(address _addr) external view returns (bool);

    function deposit(uint256 _amount) external;

    function claim() external;

    function withdraw(uint256 _amount) external;

    function unstakeNft() external;

    function getStakedNft(address _addr) external view returns (uint256);

    function getStakedPtp(address _addr) external view returns (uint256);

    function getVotes(address _account) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IPtp {
    event Approval(address indexed owner, address indexed spender, uint256 value);
    event Transfer(address indexed from, address indexed to, uint256 value);

    function name() external pure returns (string memory);

    function symbol() external pure returns (string memory);

    function decimals() external pure returns (uint8);

    function totalSupply() external view returns (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender) external view returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function PERMIT_TYPEHASH() external pure returns (bytes32);

    function nonces(address owner) external view returns (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

/**
 * @dev Interface of the MasterPlatypus
 */
interface IMasterPlatypus {
    function poolLength() external view returns (uint256);

    function pendingTokens(uint256 _pid, address _user)
        external
        view
        returns (
            uint256 pendingPtp,
            address bonusTokenAddress,
            string memory bonusTokenSymbol,
            uint256 pendingBonusToken
        );

    function rewarderBonusTokenInfo(uint256 _pid)
        external
        view
        returns (address bonusTokenAddress, string memory bonusTokenSymbol);

    function massUpdatePools() external;

    function updatePool(uint256 _pid) external;

    function deposit(uint256 _pid, uint256 _amount) external returns (uint256, uint256);

    function multiClaim(uint256[] memory _pids)
        external
        returns (
            uint256,
            uint256[] memory,
            uint256[] memory
        );

    function withdraw(uint256 _pid, uint256 _amount) external returns (uint256, uint256);

    function emergencyWithdraw(uint256 _pid) external;

    function migrate(uint256[] calldata _pids) external;

    function depositFor(
        uint256 _pid,
        uint256 _amount,
        address _user
    ) external;

    function updateFactor(address _user, uint256 _newVePtpBalance) external;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

import '@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol';

interface IRewarder {
    function onPtpReward(address user, uint256 newLpAmount) external returns (uint256);

    function pendingTokens(address user) external view returns (uint256 pending);

    function rewardToken() external view returns (IERC20Metadata);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract ContextUpgradeable is Initializable {
    function __Context_init() internal initializer {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

interface IVeERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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IVePtp","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"}]

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