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#include <climits>
#include <iostream>

using namespace std;

int main() {
  int n, value, minOdd = INT_MAX;
  long long sum = 0;

  ios_base::sync_with_stdio(false);
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> value;
    sum += value;
    if (value % 2 == 1) { 
      minOdd = min(minOdd, value);
    }
  }
  if (n == 1 && sum % 2 == 1) {
    cout << "NIESTETY" << endl;
    return 0;
  }
  if (sum % 2 == 1) {
    cout << sum - minOdd << endl;
    return 0;
  }
  cout << sum << endl;
}