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

int main() {
  ios_base::sync_with_stdio(false);
  int n;
  cin >> n;
  int sum = 0, odd = 1001;
  for (int i = 0; i < n; ++i) {
    int a;
    cin >> a;
    sum += a;
    if (a % 2 == 1)
      odd = min(odd, a);
  }
  if (sum % 2 == 0)
    cout << sum << endl;
  else if (sum > odd)
    cout << sum - odd << endl;
  else
    cout << "NIESTETY" << endl;
}