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Remainder Evaluation
     

Given two positive integers num1 and num2, the task is to find the remainder when num1 is divided by num2. 

Input:

First line of the input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case consists of a single line containing two positive integers seperated by a space .


Output:

Corresponding to each test case, print the remainder in a new line.

Constraints:
1<=T<=100
0<=num1<=50
1<=num2<=50

Example:
Input:
1
5 3
Output:
2

** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Aditya Garg

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