import java.util.Scanner;

public class No51 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int d = sc.nextInt();

        for (int i = d; i > 0; i--) {
            double yaruki = w / Math.pow(i, 2);
            int iYaruki = (int) Math.floor(yaruki);
            w -= iYaruki;

            if (i == 1) {
                System.out.println(iYaruki);
            }
        }

        sc.close();
    }

}