import java.util.Scanner;

class Test {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int W = in.nextInt();
		int D = in.nextInt();
		int temp = 0;

		for(int i=D; i>1; i--) {
			W -= (W / ((long)i * i));
		}

		System.out.println(W);
	}
}