A + B Problem

A + B Problem

Time Limit: 2000 msMemory Limit: 65536 KB

Calculate a + b

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

Sample Output

6

Hint

Use + operator

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C++源代码:

#include 
using namespace std;
int main(){
    long a,b;
    while(cin>>a>>b){
        cout<