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#include <iostream>

using namespace std;

int main()
{
  ios::sync_with_stdio(false);

  int a, b;
  long long n = 0, p = 0;
  int n_l = 0, n_min = 1000;
  
  cin >> a;

  for (int i = 0; i < a; ++i)
  {
    cin >> b;
    if ((b & 1) == 0)
    {
      p += b;
    } else
    {
      n += b;
      ++n_l;
      if (b < n_min) n_min = b;
    }
  }

  if (n_l <= 1) {
    if (p == 0) cout << "NIESTETY\n";
    else cout << p << "\n";
  } else
  {
    if ((n_l & 1) == 0) cout << n + p << "\n";
    else cout << n + p - n_min << "\n";
  }
  return 0;
}