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#include <cstdio>

using std::printf;
using std::scanf;

int main()
{
  int n;
  scanf("%d", &n);
  int a;
  int sum = 0;
  int minOdd = 1001;
  int oddCount = 0;
  while (n--)
  {
    scanf("%d", &a);
    sum += a;
    if (a % 2 == 1)
    {
      oddCount++;
      if (a < minOdd)
        minOdd = a;
    }
  }

  if (oddCount % 2 == 1)
    sum -= minOdd;

  if (sum == 0)
    printf("NIESTETY\n");
  else
    printf("%d\n", sum);

  return 0;
}