#include <bits/stdc++.h>
using namespace std;
int values[5] = {1, 2, 4, 5, 10};
int coin[100001];
void init() {
  coin[0] = 0;
  int Min = 0;
  for (int i = 1; i <= 100001; i++) {
    Min = i;
    for (int j = 0; j < 5; j++) {
      if (values[j] <= i) {

        Min = min(Min, coin[i - values[j]] + 1);
      }
    }
    coin[i] = Min;
  }
}
int main() {
  init();
  int money;
  while (cin >> money) {
    cout << coin[money] << endl;
  }
  return 0;
}