HDOJ(HDU) 1720 A+B Coming(进制)

Problem Description
Many classmates said to me that A+B is must needs.
If you can’t AC this problem, you would invite me for night meal. ^_^

Input
Input may contain multiple test cases. Each case contains A and B in one line.
A, B are hexadecimal number.
Input terminates by EOF.

Output
Output A+B in decimal number in one line.

Sample Input
1 9
A B
a b

Sample Output
10
21
21

超简单的题目，，，就是给2个16进制的数，将它们的和按10进制输出！
JAVA可以直接读取16进制的数！

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            int a = sc.nextInt(16);
            int b = sc.nextInt(16);
            System.out.println(a+b);
        }

    }

}