#include <iostream>
#include <set>
#include <map>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <climits>
#include <numeric>
#include <cmath>
#include <queue>
#include <sstream>
#include <string.h>
#include <bitset>
#include <stack>

using namespace std;
typedef long long ll;

int main() {
  ll W, D;
  cin >> W >> D;
  ll ans = 0;
  while(D) {
    ll work = W / (D * D);
    ans = work;
    W -= work;
    D--;
  }
  cout << ans << endl;
  return 0;
}