#include<iostream>
#include<string>
#include<fstream>
#include<iomanip>
#include<vector>
#include<cctype>
#include<algorithm>
using namespace std;
static const int MAX_N = 1000005;

int main()
{
	double w, d, k;
	cin >> w >> d;
	while (w > 0)
	{
		k = w / (d*d);
		k = floor(k);
		w -= k;
		d--;
	}
	cout << k << endl;
	return 0;
}