#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>

using namespace std;

int main() {
	int w, d;

	cin >> w >> d;
	int q;
	while (d > 0) {
		q = w / d / d;
		w -= q;
		d--;
	}
	cout << q << endl;
	return 0;
}