#include <iostream>

int main() {
  int l, m, n;
  int a = 0;
  int b = 0;
  int c = 0;
  int d = 0;
  int sum;
  std::cin >> l >> m >> n;
  sum = 100 * l + 25 * m + n;
  a = sum / 1000;
  sum -= a * 1000;
  b = sum / 100;
  sum -= b * 100;
  c = sum / 25;
  sum -= c * 25;
  d = sum;
  std::cout << b + c + d << std::endl;
  return 0;
}