Big Number HDU - 1212

As we know, Big Number is always troublesome. But it's really important in our ACM. And today, your task is to write a program to calculate A mod B. 

To make the problem easier, I promise that B will be smaller than 100000. 

Is it too hard? No, I work it out in 10 minutes, and my program contains less than 25 lines. 

InputThe input contains several test cases. Each test case consists of two positive integers A and B. The length of A will not exceed 1000, and B will be smaller than 100000. Process to the end of file. 
OutputFor each test case, you have to ouput the result of A mod B. 
Sample Input

2 3
12 7
152455856554521 3250

Sample Output

2
5
1521