Write a program to find the remainder when two given numbers are divided.

Input
The first line contains an integer T, total number of test cases. Then follow T lines, each line contains two Integers A and B.

Output
Find remainder when A is divided by B.

Constraints

1 ≤ T ≤ 1000
1 ≤ A,B ≤ 10000

Example

Input
3
1 2
100 200
10 40

Output
1
100
10

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