#include <vector>
#include <iostream>
#include <string>
#include <sstream>
#include <algorithm>
#include <utility>
#include <map>

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

int main(){
	ll w,d;
	cin >> w >> d;
	ll tmp = 0;
	for(ll t = d;t >= 1;t--){
		tmp = w / (t * t);
		w -= tmp;
	}	
	cout << tmp << endl;
	return 0;
}