#include <iostream>

using namespace std;


int main() {
  std::cin.tie(0);
  std::ios::sync_with_stdio(false);

  int L, M, N;
  cin >> L >> M >> N;

  int total = 100 * L + 25 * M + N;

  // cout << total << endl;
 
  int ans = 0;
  total =  total % 1000;
  ans += total / 100;
  total = total % 100;
  ans += total / 25;
  total = total % 25;
  ans += total;
  
  cout << ans << endl;

  return 0;
}