function getBalance(address _address) view public returns (uint256) {
        uint256 minutesCount = now.sub(joined[_address]).div(1 minutes);
        if (minutesCount < 4321) {
        uint256 percent = recentinvestment[_address].mul(step).div(100);
        uint256 different = percent.mul(minutesCount).div(1440);
        uint256 balance = different.sub(withdrawals[_address]);
        return balance;
       }  else {
        uint256 percentfinal = recentinvestment[_address].mul(150).div(100);
        uint256 balancefinal = percentfinal.sub(withdrawals[_address]);
        return balancefinal;
        }
      }