#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ul;
typedef signed long long ll;
ul over = 1000000007;

int main(void)
{
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed;
  ll l, m, n;
  cin >> l >> m >> n;
  ll sum = l * 100 + m * 25 + n;
  ll ans = 0;
  sum = sum%1000;
  ans += sum/100;
  sum = sum%100;
  ans += sum/25;
  sum = sum%25;
  ans += sum;
  cout << ans << endl;
  return 0;
}