Description

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.

Format

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.

It is guarantied that all integers and the sum are in the range of 32-int.

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.

Samples

1 5

6

10 20

30

Hint

This problem uses multiple group input, should use the special input method, the specific use method refer to F.A.Q (sdnu.edu.cn)