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#include <iostream>

using namespace std;

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

  int N;

  cin >> N;

  int sum = 0;
  bool even = true;
  int smallest = 1001;

  for (int i = 0; i < N; i++)
  {
    int a;
    cin >> a;
    sum += a;
    if (a&1)
    {
      even = !even;
      smallest = min(smallest, a);
    }
  }

  if (!even)
    sum -= smallest;

  if (sum>0) cout << sum << endl;
  else cout << "NIESTETY" << endl;

  return 0;
}