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#include <iostream>

using namespace std;

int main() {
  int n;
  long long sum = 0;
  int min_odd = -1;
  int odd_count = 0;
  cin >> n;
  for (int i = 0; i < n; ++i) {
    int a;
    cin >> a;
    sum += a;
    if (a % 2) {
      ++odd_count;
      if (min_odd == -1) {
        min_odd = a;
      } else if (a < min_odd) {
        min_odd = a;
      }
    }
  }
  if (odd_count % 2) {
    sum -= min_odd;
  }
  if (sum > 0) {
    cout << sum << endl;
  } else {
    cout << "NIESTETY" << endl;
  }
  return 0;
}