#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
using namespace std;
typedef long long ll;
const int mod=1e9+7;
int main(){
	int w,d;
	cin>>w>>d;
	for(int i=0;i<d;i++){
		int tmp=w/(d-i)/(d-i);
		w-=tmp;
		if(i==d-1)
			cout<<tmp<<endl;
	}
}