#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(){
	int w,d;
	cin >> w >> d;
	int ans = 0;
	for(int t = d;t >= 1;t--){
		if(t == 1)ans = w / (t * t);
		w -= w / (t * t);
	}	
	cout << ans << endl;
	return 0;
}