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#include<iostream>

using namespace std;

int main()
{
  long long n, sum, counter, a, odd, i;
  sum = 0;
  odd = 1000;
  counter = 0;
  cin >> n;
  for( i = 0; i < n; i++)
  {
      cin >> a;
      sum += a;
      if (a%2 != 0)
      {
        counter++;
        if (a < odd) odd = a;
      }
  }
  if (counter > 0 && counter % 2 != 0)  sum -= odd;
  if(sum == 0)
    printf("NIESTETY");
  else
    cout << sum;

  return 0;
}