import java.util.Scanner;

public class pre {
    public static void main(String[] args) {

        Scanner s = new Scanner(System.in);
		long w = s.nextInt(),d = s.nextInt(),lastw=0;
		
		while(d>0){
			lastw = w / (d*d);
			w -= lastw;
			d--;
		}
		
		System.out.println(lastw);
    }
}