#include <bits/stdc++.h>

inline long nextInt(void) {
  long temp;
  std::cin >> temp;
  return temp;
}

int main() {

  int L, M, N;
  int temp;
  int ans;

  std::cin >> L >> M >> N;

  temp = L*100 + M * 25 + N;
  temp %= 1000;
  ans = temp / 100;
  temp %= 100;
  ans += temp / 25;
  temp %= 25;
  ans += temp;

  std::cout << ans << std::endl;
  
  return 0;
}