#include <bits/stdc++.h>
using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define DEBUG(...)
#endif

int main() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  using ll = long long;
  vector<ll> a(5);
  for (auto&& e : a) cin >> e;
  ll res = 1e18;
  for (int bt = 0; bt < 1 << 5; ++bt) {
    bool ok = true;
    for (int i = 0; i < 5; ++i) {
      if (bt >> i & 1) continue;
      if (bt >> (i + 1) % 5 & 1) continue;
      if (bt >> (i + 2) % 5 & 1) continue;
      ok = false;
      break;
    }
    if (ok) {
      ll cur = 0;
      for (int i = 0; i < 5; ++i) {
        if (bt >> i & 1) {
          cur += a[i];
        }
      }
      res = min(res, cur);
    }
  }
  cout << res << '\n';
}