import java.util.*;
 

public class Main {
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x= sc.nextInt();
		int y=sc.nextInt();
		while(y>1){
			int temp=x/(int)Math.pow(y,2);
			x-=temp;
			y--;
		}
		System.out.println(x);
	}
}