#include <iostream>

using namespace std;

int main(){

   int l, m, n;
   int sum = 0;
   int ans = 0;

   cin >> l >> m >> n;

   sum = l * 100 + m * 25 + n;

   sum = sum % 1000;

   ans += sum / 100;

   sum = sum % 100;

   ans += sum / 25 + sum % 25;

   cout << ans << endl;

   return 0;
}