#include <bits/stdc++.h>

#include <atcoder/all>
using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
#define FAST_IO                \
  ios::sync_with_stdio(false); \
  cin.tie(0);
const i64 INF = 1001001001001001001;
using Modint = atcoder::static_modint<998244353>;

int main() {
  FAST_IO

  int n;
  cin >> n;
  vector a(n, 0LL);
  for (auto i : views::iota(0, n)) {
    cin >> a[i];
  }
  auto sum = accumulate(a.begin(), a.end(), 0);
  auto maxVal = accumulate(a.begin(), a.end(), -1, [](i64 a, i64 b) { return max(a, b); });
  auto minVal = accumulate(a.begin(), a.end(), INF, [](i64 a, i64 b) { return min(a, b); });

  // min1 min2 max2 max1
  // min1 ... max1 min2 ... max2

  auto ans = sum - maxVal + maxVal % minVal;
  for (auto i : views::iota(1, n)) {
    for (auto j : views::iota(i, n - 1)) {

      auto minVal2 = a[i];
      auto maxVal2 = a[j];
      auto cur = sum - maxVal - maxVal2;
      cur += maxVal % minVal2 + maxVal2 % minVal;

      ans = max(ans, cur);
    }
  }

  cout << ans << endl;
}