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#include <cstdio>

const int INF = 1000000000;

int main()
{
  int n;
  scanf("%d", &n);
  
  int s = 0;
  int minNP = INF;
  for (int i = 0; i < n; i++)
  {
    int a;
    scanf("%d", &a);
    if ((a % 2 == 1) && (a < minNP))
    {
      minNP = a;
    }
    s += a;
  }
  
  if (minNP == INF)
  {
    printf("%d\n", s);
  }
  else
  if (s % 2 == 0)
  {
    if (s == 0)
      printf("NIESTETY\n");
    else
      printf("%d\n", s);
  }
  else
  {
    s -= minNP;
    if (s == 0)
      printf("NIESTETY\n");
    else
      printf("%d\n", s);
  }
  
  return 0;
}