import java.util.Scanner;

class no51{
	public static void main(String[] args) {
		Scanner stdIn=new Scanner(System.in);
		long d,w,i;
		w=stdIn.nextLong();
		d=stdIn.nextLong();
		for(i=d;i>1;i--) w-=w/(i*i);
		System.out.print(w);
	}
}