18398번 - HOMWRK 다국어

In one of the beautiful cities of Afghanistan two sisters are going to program a simple game to help them solve their mathematics homework. Their homework asks them to calculate the sum and multiplication of two numbers. Your task is to help them to build a simple program for their homework.

First line contains the number of test cases (T).

T test cases follow. For each test case, the first line represents the number of problems. Next N lines contains two integer numbers A_i, B_i.

For every input expecting two integer numbers, first one represents the addition of two given numbers and second represents the multiplication separated by space.

• 1 ≤ T ≤ 10
• 1 ≤ N ≤ 50
• 0 ≤ A_i, B_i ≤ 20000