function solve(args) {
    const num = args[0];
    let result = 0;
    let digit;
    for (let i = 0; i < num.length; i++) {
      if (num[i] >= '0' && num[i] <= '9')
                {
                    digit = num[i].charCodeAt(0) - '0'.charCodeAt(0);
                }
                else
                {
                    digit = num[i].charCodeAt(0) - 'A'.charCodeAt(0) + 10;
                }

                result = result * 16 + digit;
    }
    console.log(result);
}