/*
Crypto For Food $CFF

Initial Supply: 60 000 000 000 000 000 tokens
Max Wallet: 3%

Tax:
10% buy
60% sell at launch, declining 10% every 12 hours till we reach 20% and then finaly 15%

https://t.me/cryptoforfoodofficial
*/

pragma solidity ^0.8.4;

// SPDX-License-Identifier: UNLICENSED

interface IBEP20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address _owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}


interface IPancakeERC20 {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint 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 (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint 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 (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
}

interface IPancakeFactory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);

function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}

interface IPancakeRouter01 {
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);

function factory() external pure returns (address);
function WETH() external pure returns (address);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getamountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getamountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getamountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getamountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

interface IPancakeRouter02 is IPancakeRouter01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}



/**
* @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 Ownable {
address private _owner;

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

/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = msg.sender;
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}

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

/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == msg.sender, "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 onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = 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 onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}

/**
* @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;
// solhint-disable-next-line no-inline-assembly
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");

// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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");

// solhint-disable-next-line avoid-low-level-calls
(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");

// solhint-disable-next-line avoid-low-level-calls
(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");

// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}

function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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

// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}

/**
* @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;

// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

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) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}

// 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);
}

// 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))));
}

// 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));
}
}

//CryptoForFood Contract /////////////

contract CryptoForFood is IBEP20, Ownable
{
using Address for address;
using EnumerableSet for EnumerableSet.AddressSet;

mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => uint256) private _sellLock;
mapping (address => uint256) private _buyLock;

EnumerableSet.AddressSet private _excluded;
EnumerableSet.AddressSet private _excludedFromSellLock;
EnumerableSet.AddressSet private _excludedFromBuyLock;
EnumerableSet.AddressSet private _excludedFromStaking;
//Token Info
string private constant _name = 'Crypto For Food';
string private constant _symbol = '$CFF';
uint8 private constant _decimals = 9;
uint256 public constant InitialSupply= 60000000000000000 * 10**_decimals;//equals tokens

//Divider for the MaxBalance based on circulating Supply (3%)
uint8 public constant BalanceLimitDivider=34;
//Divider for sellLimit based on circulating Supply (1%))
uint16 public constant SellLimitDivider=100;
//Sellers get locked for MaxSellLockTime (put in seconds, works better especially if changing later) so they can't dump repeatedly
uint16 public constant MaxSellLockTime= 0 seconds;
//Buyers get locked for MaxBuyLockTime (put in seconds, works better especially if changing later) so they can't buy repeatedly
uint16 public constant MaxBuyLockTime= 0 seconds;
//The time Liquidity gets locked at start and prolonged once it gets released
uint256 private constant DefaultLiquidityLockTime= 1800;
//DevWallets
address public TeamWallet=payable(0xC30fee2a12689CF1717662bFf965c2E6d9d67508);
address public walletTwo=payable(0xcBAF2cb29C6413D730c0db75bC6190a403DeB0D9);
//TestNet
//address private constant PancakeRouter=0x10ED43C718714eb63d5aA57B78B54704E256024E;
//MainNet
address private constant PancakeRouter=0x10ED43C718714eb63d5aA57B78B54704E256024E;

//variables that track balanceLimit and sellLimit,
//can be updated based on circulating supply and Sell- and BalanceLimitDividers
uint256 private _circulatingSupply =InitialSupply;
uint256 public balanceLimit = _circulatingSupply;
uint256 public sellLimit = _circulatingSupply;
uint256 private antiWhale = 600000000000000 * 10**_decimals;

//Tracks the current Taxes, different Taxes can be applied for buy/sell/transfer
uint8 private _buyTax;
uint8 private _sellTax;
uint8 private _transferTax;

uint8 private _burnTax;
uint8 private _liquidityTax;
uint8 private _stakingTax;


address private _pancakePairAddress;
IPancakeRouter02 private _pancakeRouter;

//Checks if address is in Team, is needed to give Team access even if contract is renounced
//Team doesn't have access to critical Functions that could turn this into a Rugpull(Exept liquidity unlocks)
function _isTeam(address addr) private view returns (bool){
return addr==owner()||addr==TeamWallet||addr==walletTwo;
}

//Constructor///////////

constructor () {
//contract creator gets 90% of the token to create LP-Pair
uint256 deployerBalance=_circulatingSupply;
_balances[msg.sender] = deployerBalance;
emit Transfer(address(0), msg.sender, deployerBalance);
// Pancake Router
_pancakeRouter = IPancakeRouter02(PancakeRouter);
//Creates a Pancake Pair
_pancakePairAddress = IPancakeFactory(_pancakeRouter.factory()).createPair(address(this), _pancakeRouter.WETH());

//Sets Buy/Sell limits
balanceLimit=InitialSupply/BalanceLimitDivider;
sellLimit=InitialSupply/SellLimitDivider;

//Sets sellLockTime
sellLockTime=0;

//Sets buyLockTime
buyLockTime=0;

//Set Starting Tax

_buyTax=10;
_sellTax=60;
_transferTax=60;

_burnTax=0;
_liquidityTax=20;
_stakingTax=80;

//Team wallets and deployer are excluded from Taxes
_excluded.add(TeamWallet);
_excluded.add(walletTwo);
_excluded.add(msg.sender);
//excludes Pancake Router, pair, contract and burn address from staking
_excludedFromStaking.add(address(_pancakeRouter));
_excludedFromStaking.add(_pancakePairAddress);
_excludedFromStaking.add(address(this));
_excludedFromStaking.add(0x000000000000000000000000000000000000dEaD);

}

//Transfer functionality///

//transfer function, every transfer runs through this function
function _transfer(address sender, address recipient, uint256 amount) private{
require(sender != address(0), "Transfer from zero");
require(recipient != address(0), "Transfer to zero");

//Manually Excluded adresses are transfering tax and lock free
bool isExcluded = (_excluded.contains(sender) || _excluded.contains(recipient));

//Transactions from and to the contract are always tax and lock free
bool isContractTransfer=(sender==address(this) || recipient==address(this));

//transfers between PancakeRouter and PancakePair are tax and lock free
address pancakeRouter=address(_pancakeRouter);
bool isLiquidityTransfer = ((sender == _pancakePairAddress && recipient == pancakeRouter)
|| (recipient == _pancakePairAddress && sender == pancakeRouter));

//differentiate between buy/sell/transfer to apply different taxes/restrictions
bool isBuy=sender==_pancakePairAddress|| sender == pancakeRouter;
bool isSell=recipient==_pancakePairAddress|| recipient == pancakeRouter;

//Pick transfer
if(isContractTransfer || isLiquidityTransfer || isExcluded){
_feelessTransfer(sender, recipient, amount);
}
else{
//once trading is enabled, it can't be turned off again
require(tradingEnabled,"trading not yet enabled");
_taxedTransfer(sender,recipient,amount,isBuy,isSell);
}
}
//applies taxes, checks for limits, locks generates autoLP and stakingBNB, and autostakes
function _taxedTransfer(address sender, address recipient, uint256 amount,bool isBuy,bool isSell) private{
uint256 recipientBalance = _balances[recipient];
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "Transfer exceeds balance");

uint8 tax;
if(isSell){
if(!_excludedFromSellLock.contains(sender)){
//If seller sold less than sellLockTime(2h 50m) ago, sell is declined, can be disabled by Team
require(_sellLock[sender]<=block.timestamp||sellLockDisabled,"Seller in sellLock");
//Sets the time sellers get locked(2 hours 50 mins by default)
_sellLock[sender]=block.timestamp sellLockTime;
}
//Sells can't exceed the sell limit(21,000 Tokens at start, can be updated to circulating supply)
require(amount<=sellLimit,"Dump protection");
tax=_sellTax;


} else if(isBuy){
if(!_excludedFromBuyLock.contains(recipient)){
//If buyer bought less than buyLockTime(2h 50m) ago, buy is declined, can be disabled by Team
require(_buyLock[recipient]<=block.timestamp||buyLockDisabled,"Buyer in buyLock");
//Sets the time buyers get locked(2 hours 50 mins by default)
_buyLock[recipient]=block.timestamp buyLockTime;
}
//Checks If the recipient balance(excluding Taxes) would exceed Balance Limit
require(recipientBalance amount<=balanceLimit,"whale protection");
require(amount <= antiWhale,"Tx amount exceeding max buy amount");
tax=_buyTax;

} else {//Transfer
//withdraws BNB when sending less or equal to 1 Token
//that way you can withdraw without connecting to any dApp.
//might needs higher gas limit
if(amount<=10**(_decimals)) claim(sender);
//Checks If the recipient balance(excluding Taxes) would exceed Balance Limit
require(recipientBalance amount<=balanceLimit,"whale protection");
//Transfers are disabled in sell lock, this doesn't stop someone from transfering before
//selling, but there is no satisfying solution for that, and you would need to pax additional tax
if(!_excludedFromSellLock.contains(sender))
require(_sellLock[sender]<=block.timestamp||sellLockDisabled,"Sender in Lock");
tax=_transferTax;

}
//Swapping AutoLP and MarketingBNB is only possible if sender is not pancake pair,
//if its not manually disabled, if its not already swapping and if its a Sell to avoid
// people from causing a large price impact from repeatedly transfering when theres a large backlog of Tokens
if((sender!=_pancakePairAddress)&&(!manualConversion)&&(!_isSwappingContractModifier)&&isSell)
_swapContractToken();
//Calculates the exact token amount for each tax
uint256 tokensToBeBurnt=_calculateFee(amount, tax, _burnTax);
//staking and liquidity Tax get treated the same, only during conversion they get split
uint256 contractToken=_calculateFee(amount, tax, _stakingTax _liquidityTax);
//Subtract the Taxed Tokens from the amount
uint256 taxedAmount=amount-(tokensToBeBurnt contractToken);

//Removes token and handles staking
_removeToken(sender,amount);

//Adds the taxed tokens to the contract wallet
_balances[address(this)] = contractToken;
//Burns tokens
_circulatingSupply-=tokensToBeBurnt;

//Adds token and handles staking
_addToken(recipient, taxedAmount);

emit Transfer(sender,recipient,taxedAmount);

}

//Feeless transfer only transfers and autostakes
function _feelessTransfer(address sender, address recipient, uint256 amount) private{
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "Transfer exceeds balance");
//Removes token and handles staking
_removeToken(sender,amount);
//Adds token and handles staking
_addToken(recipient, amount);

emit Transfer(sender,recipient,amount);

}
//Calculates the token that should be taxed
function _calculateFee(uint256 amount, uint8 tax, uint8 taxPercent) private pure returns (uint256) {
return (amount*tax*taxPercent) / 10000;
}

//BNB Autostake/////////////////////////////////////////////////////////////////////////////////////////
//Autostake uses the balances of each holder to redistribute auto generated BNB.
//Each transaction _addToken and _removeToken gets called for the transaction amount
//WithdrawBNB can be used for any holder to withdraw BNB at any time, like true Staking,
//so unlike MRAT clones you can leave and forget your Token and claim after a while

//lock for the withdraw
bool private _isWithdrawing;
//Multiplier to add some accuracy to profitPerShare
uint256 private constant DistributionMultiplier = 2**64;
//profit for each share a holder holds, a share equals a token.
uint256 public profitPerShare;
//the total reward distributed through staking, for tracking purposes
uint256 public totalStakingReward;
//the total payout through staking, for tracking purposes
uint256 public totalPayouts;


uint8 public marketingShare=100;
//balance that is claimable by the team
uint256 public marketingBalance;

//Mapping of the already paid out(or missed) shares of each staker
mapping(address => uint256) private alreadyPaidShares;
//Mapping of shares that are reserved for payout
mapping(address => uint256) private toBePaid;

//Contract, pancake and burnAddress are excluded, other addresses like CEX
//can be manually excluded, excluded list is limited to 30 entries to avoid a
//out of gas exeption during sells
function isExcludedFromStaking(address addr) public view returns (bool){
return _excludedFromStaking.contains(addr);
}

//Total shares equals circulating supply minus excluded Balances
function _getTotalShares() public view returns (uint256){
uint256 shares=_circulatingSupply;
//substracts all excluded from shares, excluded list is limited to 30
// to avoid creating a Honeypot through OutOfGas exeption
for(uint i=0; i<_excludedFromStaking.length(); i ){
shares-=_balances[_excludedFromStaking.at(i)];
}
return shares;
}

//adds Token to balances, adds new BNB to the toBePaid mapping and resets staking
function _addToken(address addr, uint256 amount) private {
//the amount of token after transfer
uint256 newAmount=_balances[addr] amount;

if(isExcludedFromStaking(addr)){
_balances[addr]=newAmount;
return;
}

//gets the payout before the change
uint256 payment=_newDividentsOf(addr);
//resets dividents to 0 for newAmount
alreadyPaidShares[addr] = profitPerShare * newAmount;
//adds dividents to the toBePaid mapping
toBePaid[addr] =payment;
//sets newBalance
_balances[addr]=newAmount;
}


//removes Token, adds BNB to the toBePaid mapping and resets staking
function _removeToken(address addr, uint256 amount) private {
//the amount of token after transfer
uint256 newAmount=_balances[addr]-amount;

if(isExcludedFromStaking(addr)){
_balances[addr]=newAmount;
return;
}

//gets the payout before the change
uint256 payment=_newDividentsOf(addr);
//sets newBalance
_balances[addr]=newAmount;
//resets dividents to 0 for newAmount
alreadyPaidShares[addr] = profitPerShare * newAmount;
//adds dividents to the toBePaid mapping
toBePaid[addr] =payment;
}


//gets the not dividents of a staker that aren't in the toBePaid mapping
//returns wrong value for excluded accounts
function _newDividentsOf(address staker) private view returns (uint256) {
uint256 fullPayout = profitPerShare * _balances[staker];
// if theres an overflow for some unexpected reason, return 0, instead of
// an exeption to still make trades possible
if(fullPayout return (fullPayout - alreadyPaidShares[staker]) / DistributionMultiplier;
}

//distributes bnb between marketing share and dividents
function _distributeStake(uint256 BNBamount) private {
// Deduct marketing Tax
uint256 marketingSplit = (BNBamount * marketingShare) / 100;
uint256 amount = BNBamount - marketingSplit;

marketingBalance =marketingSplit;

if (amount > 0) {
totalStakingReward = amount;
uint256 totalShares=_getTotalShares();
//when there are 0 shares, add everything to marketing budget
if (totalShares == 0) {
marketingBalance = amount;
}else{
//Increases profit per share based on current total shares
profitPerShare = ((amount * DistributionMultiplier) / totalShares);
}
}
}
event OnWithdrawXRP(uint256 amount, address recipient);

//withdraws all dividents of address
function claim(address addr) private{
require(!_isWithdrawing);
_isWithdrawing=true;
uint256 amount;
if(isExcludedFromStaking(addr)){
//if excluded just withdraw remaining toBePaid BNB
amount=toBePaid[addr];
toBePaid[addr]=0;
}
else{
uint256 newAmount=_newDividentsOf(addr);
//sets payout mapping to current amount
alreadyPaidShares[addr] = profitPerShare * _balances[addr];
//the amount to be paid
amount=toBePaid[addr] newAmount;
toBePaid[addr]=0;
}
if(amount==0){//no withdraw if 0 amount
_isWithdrawing=false;
return;
}
totalPayouts =amount;
address[] memory path = new address[](2);
path[0] = _pancakeRouter.WETH(); //BNB
path[1] = 0x1D2F0da169ceB9fC7B3144628dB156f3F6c60dBE; //Binance-Peg XRP Token

_pancakeRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
0,
path,
addr,
block.timestamp);

emit OnWithdrawXRP(amount, addr);
_isWithdrawing=false;
}

//Swap Contract Tokens//////////////////////////////////////////////////////////////////////////////////

//tracks auto generated BNB, useful for ticker etc
uint256 public totalLPBNB;
//Locks the swap if already swapping
bool private _isSwappingContractModifier;
modifier lockTheSwap {
_isSwappingContractModifier = true;
_;
_isSwappingContractModifier = false;
}

//swaps the token on the contract for Marketing BNB and LP Token.
//always swaps the sellLimit of token to avoid a large price impact
function _swapContractToken() private lockTheSwap{
uint256 contractBalance=_balances[address(this)];
uint16 totalTax=_liquidityTax _stakingTax;
uint256 tokenToSwap = 15000000000000 * 10**_decimals;
//only swap if contractBalance is larger than tokenToSwap, and totalTax is unequal to 0
if(contractBalance return;
}
//splits the token in TokenForLiquidity and tokenForMarketing
uint256 tokenForLiquidity=(tokenToSwap*_liquidityTax)/totalTax;
uint256 tokenForMarketing= tokenToSwap-tokenForLiquidity;

//splits tokenForLiquidity in 2 halves
uint256 liqToken=tokenForLiquidity/2;
uint256 liqBNBToken=tokenForLiquidity-liqToken;

//swaps marktetingToken and the liquidity token half for BNB
uint256 swapToken=liqBNBToken tokenForMarketing;
//Gets the initial BNB balance, so swap won't touch any staked BNB
uint256 initialBNBBalance = address(this).balance;
_swapTokenForBNB(swapToken);
uint256 newBNB=(address(this).balance - initialBNBBalance);
//calculates the amount of BNB belonging to the LP-Pair and converts them to LP
uint256 liqBNB = (newBNB*liqBNBToken)/swapToken;
_addLiquidity(liqToken, liqBNB);
//Get the BNB balance after LP generation to get the
//exact amount of token left for Staking
uint256 distributeBNB=(address(this).balance - initialBNBBalance);
//distributes remaining BNB between stakers and Marketing
_distributeStake(distributeBNB);
}
//swaps tokens on the contract for BNB
function _swapTokenForBNB(uint256 amount) private {
_approve(address(this), address(_pancakeRouter), amount);
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _pancakeRouter.WETH();

_pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
amount,
0,
path,
address(this),
block.timestamp
);
}
//Adds Liquidity directly to the contract where LP are locked(unlike safemoon forks, that transfer it to the owner)
function _addLiquidity(uint256 tokenamount, uint256 bnbamount) private {
totalLPBNB =bnbamount;
_approve(address(this), address(_pancakeRouter), tokenamount);
_pancakeRouter.addLiquidityETH{value: bnbamount}(
address(this),
tokenamount,
0,
0,
address(this),
block.timestamp
);
}

//public functions /////////////////////////////////////////////////////////////////////////////////////

function getLiquidityReleaseTimeInSeconds() public view returns (uint256){
if(block.timestamp<_liquidityUnlockTime){
return _liquidityUnlockTime-block.timestamp;
}
return 0;
}

function getBurnedTokens() public view returns(uint256){
return (InitialSupply-_circulatingSupply)/10**_decimals;
}

function getLimits() public view returns(uint256 balance, uint256 sell){
return(balanceLimit/10**_decimals, sellLimit/10**_decimals);
}

function getTaxes() public view returns(uint256 burnTax,uint256 liquidityTax,uint256 marketingTax, uint256 buyTax, uint256 sellTax, uint256 transferTax){
return (_burnTax,_liquidityTax,_stakingTax,_buyTax,_sellTax,_transferTax);
}

//How long is a given address still locked from selling
function getAddressSellLockTimeInSeconds(address AddressToCheck) public view returns (uint256){
uint256 lockTime=_sellLock[AddressToCheck];
if(lockTime<=block.timestamp)
{
return 0;
}
return lockTime-block.timestamp;
}
function getSellLockTimeInSeconds() public view returns(uint256){
return sellLockTime;
}

//How long is a given address still locked from buying
function getAddressBuyLockTimeInSeconds(address AddressToCheck) public view returns (uint256){
uint256 lockTime=_buyLock[AddressToCheck];
if(lockTime<=block.timestamp)
{
return 0;
}
return lockTime-block.timestamp;
}
function getBuyLockTimeInSeconds() public view returns(uint256){
return buyLockTime;
}

//Functions every wallet can call
//Resets sell lock of caller to the default sellLockTime should something go very wrong
function AddressResetSellLock() public{
_sellLock[msg.sender]=block.timestamp sellLockTime;
}

//Resets buy lock of caller to the default buyLockTime should something go very wrong
function AddressResetBuyLock() public{
_buyLock[msg.sender]=block.timestamp buyLockTime;

}
function getDividents(address addr) public view returns (uint256){
if(isExcludedFromStaking(addr)) return toBePaid[addr];
return _newDividentsOf(addr) toBePaid[addr];
}

//Settings//////////////////////////////////////////////////////////////////////////////////////////////

bool public sellLockDisabled;
uint256 public sellLockTime;
bool public buyLockDisabled;
uint256 public buyLockTime;
bool public manualConversion;

function TeamWithdrawALLMarketingBNB() public onlyOwner{
uint256 amount=marketingBalance;
marketingBalance=0;
payable(TeamWallet).transfer((amount*70) / 100);
payable(walletTwo).transfer((amount*30) / 100);
}
function TeamWithdrawXMarketingBNB(uint256 amount) public onlyOwner{
require(amount<=marketingBalance);
marketingBalance-=amount;
payable(TeamWallet).transfer((amount*70) / 100);
payable(walletTwo).transfer((amount*30) / 100);
}

//switches autoLiquidity and marketing BNB generation during transfers
function TeamSwitchManualBNBConversion(bool manual) public onlyOwner{
manualConversion=manual;
}

function TeamChangeAntiWhale(uint256 newAntiWhale) public onlyOwner{
antiWhale=newAntiWhale * 10**_decimals;
}

function TeamChangeTeamWallet(address newTeamWallet) public onlyOwner{
TeamWallet=payable(newTeamWallet);
}

function TeamChangeWalletTwo(address newWalletTwo) public onlyOwner{
walletTwo=payable(newWalletTwo);
}

//Disables the timeLock after selling for everyone
function TeamDisableSellLock(bool disabled) public onlyOwner{
sellLockDisabled=disabled;
}

//Disables the timeLock after buying for everyone
function TeamDisableBuyLock(bool disabled) public onlyOwner{
buyLockDisabled=disabled;
}

//Sets SellLockTime, needs to be lower than MaxSellLockTime
function TeamSetSellLockTime(uint256 sellLockSeconds)public onlyOwner{
require(sellLockSeconds<=MaxSellLockTime,"Sell Lock time too high");
sellLockTime=sellLockSeconds;
}

//Sets BuyLockTime, needs to be lower than MaxBuyLockTime
function TeamSetBuyLockTime(uint256 buyLockSeconds)public onlyOwner{
require(buyLockSeconds<=MaxBuyLockTime,"Buy Lock time too high");
buyLockTime=buyLockSeconds;
}

//Allows wallet exclusion to be added after launch
function AddWalletExclusion(address exclusionAdd) public onlyOwner{
_excluded.add(exclusionAdd);
}

//Sets Taxes, is limited by MaxTax(20%) to make it impossible to create honeypot
function TeamSetTaxes(uint8 burnTaxes, uint8 liquidityTaxes, uint8 stakingTaxes,uint8 buyTax, uint8 sellTax, uint8 transferTax) public onlyOwner{
uint8 totalTax=burnTaxes liquidityTaxes stakingTaxes;
require(totalTax==100, "burn liq marketing needs to equal 100%");

_burnTax=burnTaxes;
_liquidityTax=liquidityTaxes;
_stakingTax=stakingTaxes;

_buyTax=buyTax;
_sellTax=sellTax;
_transferTax=transferTax;
}

//How much of the staking tax should be allocated for marketing
function TeamChangeMarketingShare(uint8 newShare) public onlyOwner{
require(newShare<=100);
marketingShare=newShare;
}
//manually converts contract token to LP and staking BNB
function TeamCreateLPandBNB() public onlyOwner{
_swapContractToken();
}

//Limits need to be at least target, to avoid setting value to 0(avoid potential Honeypot)
function TeamUpdateLimits(uint256 newBalanceLimit, uint256 newSellLimit) public onlyOwner{
//SellLimit needs to be below 1% to avoid a Large Price impact when generating auto LP
require(newSellLimit<_circulatingSupply/100);
//Adds decimals to limits
newBalanceLimit=newBalanceLimit*10**_decimals;
newSellLimit=newSellLimit*10**_decimals;
//Calculates the target Limits based on supply
uint256 targetBalanceLimit=_circulatingSupply/BalanceLimitDivider;
uint256 targetSellLimit=_circulatingSupply/SellLimitDivider;

require((newBalanceLimit>=targetBalanceLimit),
"newBalanceLimit needs to be at least target");
require((newSellLimit>=targetSellLimit),
"newSellLimit needs to be at least target");

balanceLimit = newBalanceLimit;
sellLimit = newSellLimit;
}


//Setup Functions///////////////////////////////////////////////////////////////////////////////////////

bool public tradingEnabled;
address private _liquidityTokenAddress;
//Enables trading for everyone
function SetupEnableTrading() public onlyOwner{
tradingEnabled=true;
}
//Sets up the LP-Token Address required for LP Release
function SetupLiquidityTokenAddress(address liquidityTokenAddress) public onlyOwner{
_liquidityTokenAddress=liquidityTokenAddress;
}

//Liquidity Lock////////////////////////////////////////////////////////////////////////////////////////
//the timestamp when Liquidity unlocks
uint256 private _liquidityUnlockTime;

function TeamUnlockLiquidityInSeconds(uint256 secondsUntilUnlock) public onlyOwner{
_prolongLiquidityLock(secondsUntilUnlock block.timestamp);
}
function _prolongLiquidityLock(uint256 newUnlockTime) private{
// require new unlock time to be longer than old one
require(newUnlockTime>_liquidityUnlockTime);
_liquidityUnlockTime=newUnlockTime;
}

//Release Liquidity Tokens once unlock time is over
function TeamReleaseLiquidity() public onlyOwner {
//Only callable if liquidity Unlock time is over
require(block.timestamp >= _liquidityUnlockTime, "Not yet unlocked");

IPancakeERC20 liquidityToken = IPancakeERC20(_liquidityTokenAddress);
uint256 amount = liquidityToken.balanceOf(address(this));

//Liquidity release if something goes wrong at start
liquidityToken.transfer(TeamWallet, amount);

}
//Removes Liquidity once unlock Time is over,
function TeamRemoveLiquidity(bool addToStaking) public onlyOwner{
//Only callable if liquidity Unlock time is over
require(block.timestamp >= _liquidityUnlockTime, "Not yet unlocked");
_liquidityUnlockTime=block.timestamp DefaultLiquidityLockTime;
IPancakeERC20 liquidityToken = IPancakeERC20(_liquidityTokenAddress);
uint256 amount = liquidityToken.balanceOf(address(this));

liquidityToken.approve(address(_pancakeRouter),amount);
//Removes Liquidity and either distributes liquidity BNB to stakers, or
// adds them to marketing Balance
//Token will be converted
//to Liquidity and Staking BNB again
uint256 initialBNBBalance = address(this).balance;
_pancakeRouter.removeLiquidityETHSupportingFeeOnTransferTokens(
address(this),
amount,
0,
0,
address(this),
block.timestamp
);
uint256 newBNBBalance = address(this).balance-initialBNBBalance;
if(addToStaking){
_distributeStake(newBNBBalance);
}
else{
marketingBalance =newBNBBalance;
}

}
//Releases all remaining BNB on the contract wallet, so BNB wont be burned
function TeamRemoveRemainingBNB() public onlyOwner{
require(block.timestamp >= _liquidityUnlockTime, "Not yet unlocked");
_liquidityUnlockTime=block.timestamp DefaultLiquidityLockTime;
(bool sent,) =TeamWallet.call{value: (address(this).balance)}("");
require(sent);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
//external//////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////

receive() external payable {}
fallback() external payable {}
// IBEP20

function getOwner() external view override returns (address) {
return owner();
}

function name() external pure override returns (string memory) {
return _name;
}

function symbol() external pure override returns (string memory) {
return _symbol;
}

function decimals() external pure override returns (uint8) {
return _decimals;
}

function totalSupply() external view override returns (uint256) {
return _circulatingSupply;
}

function balanceOf(address account) external view override returns (uint256) {
return _balances[account];
}

function transfer(address recipient, uint256 amount) external override returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}

function allowance(address _owner, address spender) external view override returns (uint256) {
return _allowances[_owner][spender];
}

function approve(address spender, uint256 amount) external override returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "Approve from zero");
require(spender != address(0), "Approve to zero");

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

function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
_transfer(sender, recipient, amount);

uint256 currentAllowance = _allowances[sender][msg.sender];
require(currentAllowance >= amount, "Transfer > allowance");

_approve(sender, msg.sender, currentAllowance - amount);
return true;
}

// IBEP20 - Helpers

function increaseAllowance(address spender, uint256 addedValue) external returns (bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender] addedValue);
return true;
}

function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool) {
uint256 currentAllowance = _allowances[msg.sender][spender];
require(currentAllowance >= subtractedValue, "<0 allowance");

_approve(msg.sender, spender, currentAllowance - subtractedValue);
return true;
}

}