#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, s, e) for (int i = (int)s; i < (int)e; i++)

int main() {
    cin.tie(nullptr);
    
    ll W, D;
    cin >> W >> D;
    
    ll ans;
    
    while (D > 0) {
        ans = W / (D * D);
        W -= ans;
        D--;
    }
    
    cout << ans << '\n';
}