import java.util.*;
class test{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int W = sc.nextInt();
		int D = sc.nextInt();
		
		if(D != 1){
			for(int i=D; i>1; i--){
				W -= W / (i * i);
				
			}
		}
		System.out.println(W);
	}
}