http://acm.hdu.edu.cn/showproblem.php?pid=1091

Problem Description
Your task is to Calculate a + b.

Input
Input contains multiple test cases. Each test case contains a pair of integers a and b, one pair of integers per line. A test case containing 0 0 terminates the input and this test case is not to be processed.

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

0 0


Sample Output

6

30

--------------------------------------------------------------------------

 1 #include <iostream>
 2 using namespace std;
 3 
 4 int main()
 5 {
 6     int m,n;
 7     while (cin >> m >> n && (m!=0 || n!=0))
 8         cout << m+n << endl;
 9     return 0;
10 }