contract LPTokenWrapper {
  using SafeMath for uint256;
  using SafeERC20 for IERC20;

  IERC20 public stakingToken;
  address public treasury;
  uint256 public devFee;
  uint256 public _totalSupply;
  uint256 public _totalSupplyAccounting;
  uint256 public startTime;
  mapping(address => uint256) public _balances;
  mapping(address => uint256) public _balancesAccounting;

  // Returns the total staked tokens within the contract
  function totalSupply() public view returns (uint256) {
    return _totalSupply;
  }

  // Returns staking balance of the account
  function balanceOf(address account) public view returns (uint256) {
    return _balances[account];
  }

  // Set the staking token for the contract
  function setStakingToken(address stakingTokenAddress) internal {
    stakingToken = IERC20(stakingTokenAddress);
  }

  // Stake funds into the pool
  function stake(uint256 amount) public virtual {
    // Increment sender's balances and total supply
    _balances[msg.sender] = _balances[msg.sender].add(amount);
    _totalSupply = _totalSupply.add(amount);

    // Transfer funds
    stakingToken.safeTransferFrom(msg.sender, address(this), amount);
  }

  // Subtract balances withdrawn from the user
  function withdraw(uint256 amount) public virtual {
    _totalSupply = _totalSupply.sub(amount);
    _balances[msg.sender] = _balances[msg.sender].sub(amount);
  }
}
function withdraw(uint256 amount) public virtual {
    _totalSupply = _totalSupply.sub(amount);
    _balances[msg.sender] = _balances[msg.sender].sub(amount);
  }
// Subtract balances withdrawn from the user