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interface ContractReceiver    - function tokenFallback( address from, ...  contract SafeMath    - function safeSub(uint a, uint b)    - function safeAdd(uint a, uint b)    - function max64(uint64 a, uint64 b)    - function min64(uint64 a, uint64 b)    - function max256(uint256 a, uint256 b)    - function min256(uint256 a, uint256 b)  contract RUNEToken is SafeMath *    - function RUNEToken()    - function()    - function balanceOf( address owner )    - function approve( address spender, ui ...    - function safeApprove( address _spende ...    - function allowance( address owner, ad ...    - function transfer(address to, uint256 ...    - function transferFrom( address from, ...    - function transfer( address to,    - function transfer( address to, uint v ...    - function transferToContract( address ...    - function isContract( address _addr )    - function _transfer( address from,    - function burn( uint256 value )    - function burnFrom( address from, uint ...

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/**
 *Submitted for verification at Etherscan.io on 2018-08-08
*/

// compiler: 0.4.21+commit.dfe3193c.Emscripten.clang
pragma solidity ^0.4.21;

// ERC20 Token with ERC223 Token compatibility
// SafeMath from OpenZeppelin Standard
// Added burn functions from Ethereum Token 
// - https://theethereum.wiki/w/index.php/ERC20_Token_Standard
// - https://github.com/Dexaran/ERC23-tokens/blob/Recommended/ERC223_Token.sol
// - https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/math/SafeMath.sol
// - https://www.ethereum.org/token (uncontrolled, non-standard)


// ERC223
interface ContractReceiver {
  function tokenFallback( address from, uint value, bytes data ) external;
}

// SafeMath
contract SafeMath {

    function safeSub(uint a, uint b) internal pure returns (uint) {
        assert(b <= a);
        return a - b;
    }

    function safeAdd(uint a, uint b) internal pure returns (uint) {
        uint c = a + b;
        assert(c >= a);
        return c;
    }
    
    function max64(uint64 a, uint64 b) internal pure returns (uint64) {
        return a >= b ? a : b;
    }

    function min64(uint64 a, uint64 b) internal pure returns (uint64) {
        return a < b ? a : b;
    }

    function max256(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    function min256(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
}
}


contract RUNEToken is SafeMath
{
    
    // Rune Characteristics
  string  public name = "Rune";
  string  public symbol  = "RUNE";
  uint256   public decimals  = 18;
  uint256 public totalSupply  = 1000000000 * (10 ** decimals);

    // Mapping
  mapping( address => uint256 ) balances_;
  mapping( address => mapping(address => uint256) ) allowances_;
  
  // Minting event
  function RUNEToken() public {
        balances_[msg.sender] = totalSupply;
            emit Transfer( address(0), msg.sender, totalSupply );
    }

  function() public payable { revert(); } // does not accept money
  
  // ERC20
  event Approval( address indexed owner,
                  address indexed spender,
                  uint value );

  event Transfer( address indexed from,
                  address indexed to,
                  uint256 value );


  // ERC20
  function balanceOf( address owner ) public constant returns (uint) {
    return balances_[owner];
  }

  // ERC20
  function approve( address spender, uint256 value ) public
  returns (bool success)
  {
    allowances_[msg.sender][spender] = value;
    emit Approval( msg.sender, spender, value );
    return true;
  }
 
  // recommended fix for known attack on any ERC20
  function safeApprove( address _spender,
                        uint256 _currentValue,
                        uint256 _value ) public
                        returns (bool success) {

    // If current allowance for _spender is equal to _currentValue, then
    // overwrite it with _value and return true, otherwise return false.

    if (allowances_[msg.sender][_spender] == _currentValue)
      return approve(_spender, _value);

    return false;
  }

  // ERC20
  function allowance( address owner, address spender ) public constant
  returns (uint256 remaining)
  {
    return allowances_[owner][spender];
  }

  // ERC20
  function transfer(address to, uint256 value) public returns (bool success)
  {
    bytes memory empty; // null
    _transfer( msg.sender, to, value, empty );
    return true;
  }

  // ERC20
  function transferFrom( address from, address to, uint256 value ) public
  returns (bool success)
  {
    require( value <= allowances_[from][msg.sender] );

    allowances_[from][msg.sender] -= value;
    bytes memory empty;
    _transfer( from, to, value, empty );

    return true;
  }

  // ERC223 Transfer and invoke specified callback
  function transfer( address to,
                     uint value,
                     bytes data,
                     string custom_fallback ) public returns (bool success)
  {
    _transfer( msg.sender, to, value, data );

    if ( isContract(to) )
    {
      ContractReceiver rx = ContractReceiver( to );
      require( address(rx).call.value(0)(bytes4(keccak256(custom_fallback)),
               msg.sender,
               value,
               data) );
    }

    return true;
  }

  // ERC223 Transfer to a contract or externally-owned account
  function transfer( address to, uint value, bytes data ) public
  returns (bool success)
  {
    if (isContract(to)) {
      return transferToContract( to, value, data );
    }

    _transfer( msg.sender, to, value, data );
    return true;
  }

  // ERC223 Transfer to contract and invoke tokenFallback() method
  function transferToContract( address to, uint value, bytes data ) private
  returns (bool success)
  {
    _transfer( msg.sender, to, value, data );

    ContractReceiver rx = ContractReceiver(to);
    rx.tokenFallback( msg.sender, value, data );

    return true;
  }

  // ERC223 fetch contract size (must be nonzero to be a contract)
  function isContract( address _addr ) private constant returns (bool)
  {
    uint length;
    assembly { length := extcodesize(_addr) }
    return (length > 0);
  }

  function _transfer( address from,
                      address to,
                      uint value,
                      bytes data ) internal
  {
    require( to != 0x0 );
    require( balances_[from] >= value );
    require( balances_[to] + value > balances_[to] ); // catch overflow

    balances_[from] -= value;
    balances_[to] += value;

    //Transfer( from, to, value, data ); ERC223-compat version
    bytes memory empty;
    empty = data;
    emit Transfer( from, to, value ); // ERC20-compat version
  }
  
  
    // Ethereum Token
  event Burn( address indexed from, uint256 value );
  
    // Ethereum Token
  function burn( uint256 value ) public
  returns (bool success)
  {
    require( balances_[msg.sender] >= value );
    balances_[msg.sender] -= value;
    totalSupply -= value;

    emit Burn( msg.sender, value );
    return true;
  }

  // Ethereum Token
  function burnFrom( address from, uint256 value ) public
  returns (bool success)
  {
    require( balances_[from] >= value );
    require( value <= allowances_[from][msg.sender] );

    balances_[from] -= value;
    allowances_[from][msg.sender] -= value;
    totalSupply -= value;

    emit Burn( from, value );
    return true;
  }
  
  
}

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