Description

Your task is to Calculate a + b.

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, and followed by a blank line.

Samples

1 5
10 20

6

30