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

int main() {
  int A, B, C;
  cin >> A >> B >> C;
  int ans = 0;
  int sum = A * 100 + B * 25 + C;
  sum %= 1000;
  ans += sum / 100;
  sum %= 100;
  ans += sum / 25;
  sum %= 25;
  ans += sum;
  cout << ans << "\n";
}