#include <bits/stdc++.h>
using namespace std;
struct cww{cww(){ios::sync_with_stdio(false);cin.tie(0);}}star;
int main()
{
	int W, D;
	cin >> W >> D;
	int sum{}, total{};
	for( int i = D; i > 0; i-- )
	{
		sum = floor( W / pow( D, 2 ) );
		total += sum;
		W -= sum;
		D--;
	}
	cout << sum << endl;
	return 0;
}