#include<cstdio>
#include <iostream>
#include<algorithm>
#include<string>
#include<queue>
#include<vector>
#include<functional>
#include<cmath>
#include<map>
#include<stack>
#include<set>
#include<numeric>

using namespace std;
typedef long long ll;
typedef pair<ll, ll> Pr;

ll W, D,ans;

int main()
{
	cin >> W >> D;

	for (ll i = D; i >= 1; i--) {
		ans = W / (i*i);
		W -= W / (i*i);
	}
	cout << ans << endl;
	return	0;
}