### PROBLEM LINK:

### DIFFICULTY:

CAKEWALK

### PREREQUISITES:

None

### PROBLEM:

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

### EXPLANATION:

Find remainder when **A** is divided by **B** .

### AUTHOR’S SOLUTION:

Author’s solution can be found here