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pragma solidity >=0.6.2;
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interface IUniswapV2Router01 {
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function factory() external pure returns (address);
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function WETH() external pure returns (address);
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function addLiquidity(
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address tokenA,
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address tokenB,
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uint amountADesired,
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uint amountBDesired,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline
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) external returns (uint amountA, uint amountB, uint liquidity);
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function addLiquidityETH(
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address token,
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uint amountTokenDesired,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline
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) external payable returns (uint amountToken, uint amountETH, uint liquidity);
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function removeLiquidity(
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address tokenA,
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address tokenB,
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uint liquidity,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline
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) external returns (uint amountA, uint amountB);
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function removeLiquidityETH(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline
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) external returns (uint amountToken, uint amountETH);
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function removeLiquidityWithPermit(
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address tokenA,
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address tokenB,
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uint liquidity,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline,
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bool approveMax, uint8 v, bytes32 r, bytes32 s
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) external returns (uint amountA, uint amountB);
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function removeLiquidityETHWithPermit(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline,
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bool approveMax, uint8 v, bytes32 r, bytes32 s
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) external returns (uint amountToken, uint amountETH);
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function swapExactTokensForTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external returns (uint[] memory amounts);
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function swapTokensForExactTokens(
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uint amountOut,
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uint amountInMax,
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address[] calldata path,
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address to,
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uint deadline
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) external returns (uint[] memory amounts);
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function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
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external
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payable
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returns (uint[] memory amounts);
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function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
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external
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returns (uint[] memory amounts);
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function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
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external
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returns (uint[] memory amounts);
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function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
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external
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payable
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returns (uint[] memory amounts);
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function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
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function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
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function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
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function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
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function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
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}
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pragma solidity >=0.6.2;
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interface IUniswapV2Router02 is IUniswapV2Router01 {
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function removeLiquidityETHSupportingFeeOnTransferTokens(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline
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) external returns (uint amountETH);
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function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline,
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bool approveMax, uint8 v, bytes32 r, bytes32 s
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) external returns (uint amountETH);
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function swapExactTokensForTokensSupportingFeeOnTransferTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external;
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function swapExactETHForTokensSupportingFeeOnTransferTokens(
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external payable;
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function swapExactTokensForETHSupportingFeeOnTransferTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external;
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}
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pragma solidity ^0.8.0;
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interface IERC20 {
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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function totalSupply() external view returns (uint256);
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function balanceOf(address account) external view returns (uint256);
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function transfer(address to, uint256 amount) external returns (bool);
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function allowance(address owner, address spender) external view returns (uint256);
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function approve(address spender, uint256 amount) external returns (bool);
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function transferFrom(
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address from,
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address to,
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uint256 amount
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) external returns (bool);
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}
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pragma solidity ^0.8.0;
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interface IERC20Metadata is IERC20 {
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function name() external view returns (string memory);
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function symbol() external view returns (string memory);
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function decimals() external view returns (uint8);
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}
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pragma solidity ^0.8.0;
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abstract contract Context {
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function _msgSender() internal view virtual returns (address) {
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return msg.sender;
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}
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function _msgData() internal view virtual returns (bytes calldata) {
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return msg.data;
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}
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}
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pragma solidity ^0.8.0;
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contract ERC20 is Context, IERC20, IERC20Metadata {
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mapping(address => uint256) private _balances;
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mapping(address => mapping(address => uint256)) private _allowances;
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uint256 private _totalSupply;
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string private _name;
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string private _symbol;
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constructor(string memory name_, string memory symbol_) {
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_name = name_;
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_symbol = symbol_;
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}
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function name() public view virtual override returns (string memory) {
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return _name;
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}
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function symbol() public view virtual override returns (string memory) {
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return _symbol;
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}
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function decimals() public view virtual override returns (uint8) {
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return 18;
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}
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function totalSupply() public view virtual override returns (uint256) {
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return _totalSupply;
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}
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function balanceOf(address account) public view virtual override returns (uint256) {
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return _balances[account];
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}
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function transfer(address to, uint256 amount) public virtual override returns (bool) {
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address owner = _msgSender();
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_transfer(owner, to, amount);
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return true;
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}
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function allowance(address owner, address spender) public view virtual override returns (uint256) {
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return _allowances[owner][spender];
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}
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function approve(address spender, uint256 amount) public virtual override returns (bool) {
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address owner = _msgSender();
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_approve(owner, spender, amount);
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return true;
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}
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function transferFrom(
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address from,
|
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address to,
|
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uint256 amount
|
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) public virtual override returns (bool) {
|
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address spender = _msgSender();
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_spendAllowance(from, spender, amount);
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_transfer(from, to, amount);
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return true;
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}
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function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
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address owner = _msgSender();
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_approve(owner, spender, allowance(owner, spender) + addedValue);
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return true;
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}
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function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
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address owner = _msgSender();
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uint256 currentAllowance = allowance(owner, spender);
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require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
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unchecked {
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_approve(owner, spender, currentAllowance - subtractedValue);
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}
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return true;
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}
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function _transfer(
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address from,
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address to,
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uint256 amount
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) internal virtual {
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require(from != address(0), "ERC20: transfer from the zero address");
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require(to != address(0), "ERC20: transfer to the zero address");
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_beforeTokenTransfer(from, to, amount);
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uint256 fromBalance = _balances[from];
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require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
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unchecked {
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_balances[from] = fromBalance - amount;
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}
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_balances[to] += amount;
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emit Transfer(from, to, amount);
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_afterTokenTransfer(from, to, amount);
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}
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function _mint(address account, uint256 amount) internal virtual {
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require(account != address(0), "ERC20: mint to the zero address");
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_beforeTokenTransfer(address(0), account, amount);
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_totalSupply += amount;
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_balances[account] += amount;
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emit Transfer(address(0), account, amount);
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_afterTokenTransfer(address(0), account, amount);
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}
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function _burn(address account, uint256 amount) internal virtual {
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require(account != address(0), "ERC20: burn from the zero address");
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_beforeTokenTransfer(account, address(0), amount);
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uint256 accountBalance = _balances[account];
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require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
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unchecked {
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_balances[account] = accountBalance - amount;
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}
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_totalSupply -= amount;
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emit Transfer(account, address(0), amount);
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_afterTokenTransfer(account, address(0), amount);
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}
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function _approve(
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address owner,
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address spender,
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uint256 amount
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) internal virtual {
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require(owner != address(0), "ERC20: approve from the zero address");
|
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require(spender != address(0), "ERC20: approve to the zero address");
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_allowances[owner][spender] = amount;
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emit Approval(owner, spender, amount);
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}
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function _spendAllowance(
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address owner,
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address spender,
|
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uint256 amount
|
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) internal virtual {
|
|
uint256 currentAllowance = allowance(owner, spender);
|
|
if (currentAllowance != type(uint256).max) {
|
|
require(currentAllowance >= amount, "ERC20: insufficient allowance");
|
|
unchecked {
|
|
_approve(owner, spender, currentAllowance - amount);
|
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}
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}
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}
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function _beforeTokenTransfer(
|
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address from,
|
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address to,
|
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uint256 amount
|
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) internal virtual {}
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function _afterTokenTransfer(
|
|
address from,
|
|
address to,
|
|
uint256 amount
|
|
) internal virtual {}
|
|
}
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|
|
pragma solidity ^0.8.0;
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|
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abstract contract Ownable is Context {
|
|
address private _owner;
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|
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
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|
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constructor() {
|
|
_transferOwnership(_msgSender());
|
|
}
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|
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modifier onlyOwner() {
|
|
_checkOwner();
|
|
_;
|
|
}
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|
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function owner() public view virtual returns (address) {
|
|
return _owner;
|
|
}
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|
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function _checkOwner() internal view virtual {
|
|
require(owner() == _msgSender(), "Ownable: caller is not the owner");
|
|
}
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|
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function renounceOwnership() public virtual onlyOwner {
|
|
_transferOwnership(address(0));
|
|
}
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|
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|
|
function transferOwnership(address newOwner) public virtual onlyOwner {
|
|
require(newOwner != address(0), "Ownable: new owner is the zero address");
|
|
_transferOwnership(newOwner);
|
|
}
|
|
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|
|
function _transferOwnership(address newOwner) internal virtual {
|
|
address oldOwner = _owner;
|
|
_owner = newOwner;
|
|
emit OwnershipTransferred(oldOwner, newOwner);
|
|
}
|
|
}
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|
|
pragma solidity 0.8.4;
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|
|
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|
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interface IStaking {
|
|
function addFees(uint256 feeAmount) external;
|
|
}
|
|
|
|
contract FlowerFeeHandler is Ownable {
|
|
|
|
uint256 public _platformFee = 500000000000000000;
|
|
uint256 public _stakingPoolFee = 500000000000000000;
|
|
address public _platformWalletAddress = 0x79FD86538966541681cb7E8aCf5eF4767736a142;
|
|
address public immutable _stakingPoolAddress;
|
|
address private immutable wethAddress;
|
|
uint256 public _feeThreshold = 1000000000000000000;
|
|
uint256 public lastStakingPayoutTime = block.timestamp;
|
|
|
|
address public immutable _FloFiTokenAddress;
|
|
IUniswapV2Router02 public immutable uniswapV2Router;
|
|
|
|
|
|
|
|
constructor(address FloFiTokenAddress_, address stakingPoolAddress_){
|
|
_FloFiTokenAddress = FloFiTokenAddress_;
|
|
_stakingPoolAddress = stakingPoolAddress_;
|
|
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
|
|
uniswapV2Router = _uniswapV2Router;
|
|
wethAddress = _uniswapV2Router.WETH();
|
|
|
|
}
|
|
|
|
function changeFeeThreshold(uint256 newFeeThreshold) public onlyOwner {
|
|
_feeThreshold = newFeeThreshold;
|
|
}
|
|
|
|
function changeFeePercentages(uint256 stakersPercentage, uint256 platformPercentage) public onlyOwner {
|
|
_platformFee = platformPercentage;
|
|
_stakingPoolFee = stakersPercentage;
|
|
}
|
|
|
|
function collectFees(uint256 feeAmount) public {
|
|
IERC20 wethContract = IERC20(wethAddress);
|
|
require(wethContract.allowance(msg.sender, address(this)) >= feeAmount, "Allowance is not sufficient!");
|
|
require(wethContract.balanceOf(msg.sender) >= feeAmount, "Balance is not sufficient!");
|
|
wethContract.transferFrom(msg.sender, address(this), feeAmount);
|
|
|
|
if(wethContract.balanceOf(address(this)) >= _feeThreshold){
|
|
uint256 platformCut = _platformFee * _feeThreshold / 10**18;
|
|
uint256 stakersCut = _stakingPoolFee * _feeThreshold / 10**18;
|
|
|
|
wethContract.transfer(_platformWalletAddress, platformCut);
|
|
wethContract.approve(address(uniswapV2Router), stakersCut);
|
|
|
|
address[] memory path = new address[](2);
|
|
path[0] = wethAddress;
|
|
path[1] = _FloFiTokenAddress;
|
|
|
|
uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
|
|
stakersCut,
|
|
0,
|
|
path,
|
|
address(this),
|
|
block.timestamp
|
|
);
|
|
if(block.timestamp > lastStakingPayoutTime + 43){
|
|
uint256 FloFiToPay = IERC20(_FloFiTokenAddress).balanceOf(address(this));
|
|
IERC20(_FloFiTokenAddress).approve(_stakingPoolAddress, FloFiToPay);
|
|
IStaking(_stakingPoolAddress).addFees(FloFiToPay);
|
|
lastStakingPayoutTime = block.timestamp;
|
|
}
|
|
}
|
|
}
|
|
|
|
} |