Problem:
Remainder of Big Integers

Given two integers $A$ and $B$, compute the remainder of $\frac{A}{B}$.

Input

Two integers $A$ and $B$ separated by a space character are given in a line.

Output

Print the remainder in a line.

Constraints

$0 \leq A, B \leq 10^{1000}$

$B \ne 0$

Sample Input 1

5 8

Sample Output 1

5

Sample Input 2

100 25

Sample Output 2

0

Solution in JAVA (judge verdict: Accepted)

import java.io.BufferedInputStream;
import java.math.BigInteger;
import java.util.Scanner;

public class Main {
	public static void main(String []args)
	{
		Scanner in =new Scanner(new BufferedInputStream(System.in));
		while(in.hasNext())
		{
			BigInteger a = in.nextBigInteger(),b = in.nextBigInteger();
			System.out.println(a.remainder(b));
		}
		in.close();
	}
}