#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  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;
  return 0;
}