#include <bits/stdc++.h>
using namespace std;

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