import java.io.*;
import java.lang.*;
import java.util.*;
import java.math.*;

public class Main {
    static Scanner cin = new Scanner(System.in);
    public static void main(String[] args) {
	Long w=cin.nextLong();
	Long d=cin.nextLong();
	for(Long i=d; i>1; i--) w-=w/(i*i);
	System.out.println(w);
    }
}