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문제

Given two integers, calculate and output their sum.

입력

The input contains several test cases. The first line contains and integer t (t ≤ 100) denoting the number of test cases. Then t tests follow, each of them consisiting of two space separated integers x and y (−109 ≤ x, y ≤ 109).

출력

For each test case output output the sum of the corresponding integers.

예제 입력 1

4
-100 100
2 3
0 110101
-1000000000 1

예제 출력 1

0
5
110101
-999999999