import java.util.Scanner;

public class yukicoder_51 {
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		
		long w = stdIn.nextLong();
		long d = stdIn.nextLong();
		
		for (long i = d; i > 1; i--) {
			w = w - (w / (i * i));
		}
		
		System.out.println(w);

	}
}