#include <bits/stdc++.h>
using namespace std;
int main(int argc, const char* argv[]) {
  cin.tie(0);
  ios::sync_with_stdio(false);
  int H, A, cnt, i;
  cin >> H >> A;
  if (H % A == 0) {
    cnt = H / A;
  } else {
    cnt = H / A + 1;
  }
  cout << cnt << endl;
  return 0;
}
