#include <bits/stdc++.h>
#define INF 2000000000000000000
#define ll long long
#define pll pair<ll, ll>
using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  ll L, M, N;
  cin >> L >> M >> N;
  ll all = L * 100 + 25 * M + N;
  ll ans = 0;
  ans += all / 1000;
  all /= 1000;
  ans += all / 100;
  all /= 100;
  ans += all / 25;
  all /= 25;
  ans += all;
  cout << ans << "\n";
}