#include <iostream>

using namespace std;

int main ()
{
  int d, w, amount_of_work=0;
  cin >> w >> d;
  for(int i=d; i>0; i--) {
    amount_of_work = w/(i*i);
    w -= amount_of_work;
  }
  cout << amount_of_work << endl;
  return 0;
}