HDU-1000 A + B Problem

Calculate A + B.

Input

Each line will contain two integers A and B. Process to end of file.

Output

For each case, output A + B in one line.

Sample Input

1 1

Sample Output

2

题目解析：主要就是循环输入和输出，问题不大。
AC通过的c++程序如下：

#include <iostream>
using namespace std;
int main()
{
int a,b;
while (cin>>a>>b)
{cout<<a+b<<endl; 
}
}