Java基础代码库：ACM的A+B问题

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