HDU 1091

                                    A+B for Input-Output Practice (III)

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

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int a,b;
    while(~scanf("%d %d",&a,&b)&&(a||b))
    {
        printf("%d\n",a+b);
    }
    return 0;
}