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

int main(){

  int a, b, c, p, ans;

  cin >> a >> b >> c;
  p = a * 100 + b * 25 + c;

  p %= 1000;

  ans = p / 100;
  p %= 100;

  ans += p / 25;
  p %= 25;

  cout << ans + p << endl;

}