求助acm最初级的a+b
A+B for Input-Output Practice (I)
Your task is to Calculate a + b.
Too easy?! Of course! I specially designed the problem for acm beginners.
You must have found that some problems have the same titles with this one, yes, all these problems were designed for the same aim.
Input

The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.
Output

For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.
Sample Input

1 5
10 20

Sample Output

6
30
这种答案格式是不对的，为什么还会接受？
编译后是这种格式：
1 5
6
2 4
求标准答案……
6


题目只是说输入两个数，计算其和，输入的数对在一样，并且用空格隔开。输出的数在一个单行上.并没有明确要求你把所有的输入全部完成后，再统一输出答案.这个输入可以是无穷的啊