#include <iostream>
using namespace std;

int main() {
  int l, m, n;
  cin >> l >> m >> n;
  int rest = (100 * l + 25 * m + n) % 1000;
  l = rest / 100;
  rest = (rest - 100 * l) % 100;
  m = rest / 25;
  rest = (rest - 25 * m) % 25;
  n = rest;
  cout << l + m + n << endl;
  return 0;
 }