pragma solidity ^0.4.24;

    /**

     * @title ERC20Basic

     * @dev Simpler version of ERC20 interface

     * See https://github.com/ethereum/EIPs/issues/179

     */

    contract ERC20Basic {

        function totalSupply() public view returns (uint256);
  
        function balanceOf(address who) public view returns (uint256);
  
        function transfer(address to, uint256 value) public returns (bool);
  
        event Transfer(address indexed from, address indexed to, uint256 value);
  
      }
      /**
  
       * @title ERC20 interface
  
       * @dev see https://github.com/ethereum/EIPs/issues/20
  
       */
  
      contract ERC20 is ERC20Basic {
  
        function allowance(address owner, address spender)
  
         public view returns (uint256);
  
        function transferFrom(address from, address to, uint256 value)
  
         public returns (bool);
  
       function approve(address spender, uint256 value) public returns (bool);
  
       event Approval(address indexed owner,address indexed spender,uint256 value);
  
      }
  
  
       /* @title SafeERC20
  
       * @dev Wrappers around ERC20 operations that throw on failure.
  
       * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
  
       * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
  
       */
  
      library SafeERC20 {
  
        function safeTransfer(ERC20Basic token, address to, uint256 value) internal {
  
          require(token.transfer(to, value));
  
        }
  
  
  
  
        function safeTransferFrom(
  
          ERC20 token,
  
          address from,
  
          address to,
  
          uint256 value
  
        )
  
          internal
  
        {
  
          require(token.transferFrom(from, to, value));
  
        }
  
  
  
  
        function safeApprove(ERC20 token, address spender, uint256 value) internal {
  
          require(token.approve(spender, value));
  
        }
  
      }
      /**
  
       * @title Ownable
  
       * @dev The Ownable contract has an owner address, and provides basic authorization control
  
       * functions, this simplifies the implementation of "user permissions".
  
       */
  
      contract Ownable {
  
        address public owner;
  
        event OwnershipRenounced(address indexed previousOwner);
  
        event OwnershipTransferred(
  
          address indexed previousOwner,
  
          address indexed newOwner
  
        );
  
        /**
  
         * @dev The Ownable constructor sets the original `owner` of the contract to the sender
  
         * account.
  
         */
        constructor() public {
  
          owner = msg.sender;
  
        }
  
  
        /**
         * @dev Throws if called by any account other than the owner.
         */
  
        modifier onlyOwner() {
  
          require(msg.sender == owner);
  
          _;
  
        }
  
  
        /**
  
         * @dev Allows the current owner to relinquish control of the contract.
  
         * @notice Renouncing to ownership will leave the contract without an owner.
  
         * It will not be possible to call the functions with the `onlyOwner`
  
         * modifier anymore.
  
         */
  
        function renounceOwnership() public onlyOwner {
  
          emit OwnershipRenounced(owner);
  
          owner = address(0);
  
        }
  
        /**
  
         * @dev Allows the current owner to transfer control of the contract to a newOwner.
  
         * @param _newOwner The address to transfer ownership to.
  
         */
  
        function transferOwnership(address _newOwner) public onlyOwner {
  
          _transferOwnership(_newOwner);
  
        }
  
  
  
  
        /**
  
         * @dev Transfers control of the contract to a newOwner.
  
         * @param _newOwner The address to transfer ownership to.
  
         */
  
        function _transferOwnership(address _newOwner) internal {
  
          require(_newOwner != address(0));
  
          emit OwnershipTransferred(owner,     _newOwner);
  
          owner = _newOwner;
  
        }
  
      }
      /**
  
       * @title SafeMath
  
       * @dev Math operations with safety checks that throw on error
  
       */
  
      library SafeMath {
  
        /**
  
        * @dev Multiplies two numbers, throws on overflow.
  
        */
  
        function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
  
          // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
  
          // benefit is lost if 'b' is also tested.
  
          // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
  
          if (a == 0) {
  
            return 0;
  
          }
          c = a * b;
          assert(c / a == b);
  
          return c;
        }
  
  
        /**
  
        * @dev Integer division of two numbers, truncating the quotient.
  
        */
  
        function div(uint256 a, uint256 b) internal pure returns (uint256) {
  
          // assert(b > 0); // Solidity automatically throws when dividing by 0
  
          // uint256 c = a / b;
  
          // assert(a == b * c + a % b); // There is no case in which this doesn't hold
  
          return a / b;
  
        }
  
        /**
  
        * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  
        */
  
        function sub(uint256 a, uint256 b) internal pure returns (uint256) {
  
          assert(b <= a);
  
          return a - b;
  
        }
  
        /**
  
        * @dev Adds two numbers, throws on overflow.
  
        */
  
        function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
  
          c = a + b;
  
          assert(c >= a);
  
          return c;
  
        }
  
      }
  
/**
 * @title Standard ERC20 token
 *
 * @dev Implementation of the basic standard token.
 * https://github.com/ethereum/EIPs/issues/20
 * Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20 {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  mapping (address => mapping (address => uint256)) internal allowed;

  uint256 totalSupply_;

  /**
  * @dev Total number of tokens in existence
  */
  function totalSupply() public view returns (uint256) {
    return totalSupply_;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256) {
    return balances[_owner];
  }

  /**
   * @dev Function to check the amount of tokens that an owner allowed to a spender.
   * @param _owner address The address which owns the funds.
   * @param _spender address The address which will spend the funds.
   * @return A uint256 specifying the amount of tokens still available for the spender.
   */
  function allowance(
    address _owner,
    address _spender
   )
    public
    view
    returns (uint256)
  {
    return allowed[_owner][_spender];
  }

  /**
  * @dev Transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_value <= balances[msg.sender]);
    require(_to != address(0));

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
   * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
   * 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
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
   * @dev Transfer tokens from one address to another
   * @param _from address The address which you want to send tokens from
   * @param _to address The address which you want to transfer to
   * @param _value uint256 the amount of tokens to be transferred
   */
  function transferFrom(
    address _from,
    address _to,
    uint256 _value
  )
    public
    returns (bool)
  {
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);
    require(_to != address(0));

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    emit Transfer(_from, _to, _value);
    return true;
  }

  /**
   * @dev Increase the amount of tokens that an owner allowed to a spender.
   * approve should be called when allowed[_spender] == 0. To increment
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _addedValue The amount of tokens to increase the allowance by.
   */
  function increaseApproval(
    address _spender,
    uint256 _addedValue
  )
    public
    returns (bool)
  {
    allowed[msg.sender][_spender] = (
      allowed[msg.sender][_spender].add(_addedValue));
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
   * @dev Decrease the amount of tokens that an owner allowed to a spender.
   * approve should be called when allowed[_spender] == 0. To decrement
   * allowed value is better to use this function to avoid 2 calls (and wait until
   * the first transaction is mined)
   * From MonolithDAO Token.sol
   * @param _spender The address which will spend the funds.
   * @param _subtractedValue The amount of tokens to decrease the allowance by.
   */
  function decreaseApproval(
    address _spender,
    uint256 _subtractedValue
  )
    public
    returns (bool)
  {
    uint256 oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue >= oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

}


contract FexToken is StandardToken {
    string public constant name = "FEX NEW Token";
    string public constant symbol = "FEX";
    uint8 public constant decimals = 18;
    
  
    constructor() public {
      totalSupply_ = 30000000000000000000000000;
      balances[msg.sender] = totalSupply_;
    }
  }