#include <bits/stdc++.h>
#define rep(i, a, n) for (int i = a; i < n; i++)
#define repr(i, a, n) for (int i = n - 1; i >= a; i--)
using namespace std;
using ll = long long;
using P = pair<int, int>;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);

  int l, m, n;
  cin >> l >> m >> n;
  m += n / 25;
  n %= 25;
  l += m / 4;
  m %= 4;
  l %= 10;
  cout << l + m + n << endl;
}