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#include <stdio.h>

int main()
{
  int num, sum, current, min;
  scanf("%d", &num);
  sum = 0;
  min = 1000;
  while (num--) {
    scanf("%d", &current);
    sum += current;
    if (current % 2 && current < min) {
      min = current;
    }
  }
  if (min % 2 && sum % 2) {
    sum -= min;
  }
  if (sum) {
    printf("%d\n", sum);
  } else {
    printf("NIESTETY\n");
  }
  return 0;
}