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#include <cstdio>

int main() {
  int n;
  scanf("%d", &n);
  int sum = 0, np = 9999;
  for (int i=0;i<n;i++)
  {
    int a;
    scanf("%d", &a);
    sum += a;
    if (a % 2 == 1 && a < np) {
      np = a;
    }
  }

  if (sum % 2 == 0)
    printf("%d\n", sum);
  else if (n == 1)
    printf("NIESTETY\n");
  else
    printf("%d\n", sum - np);

  return 0;
}