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#include <cstdio>

int main() {
  int n;
  scanf("%d",&n);
  int sum = 0, smallest_odd = 0;
  for(int i = 0; i < n; ++i) {
    int b;
    scanf("%d", &b);
    sum += b;
    if (b % 2 != 0) {
      if (smallest_odd == 0 || b < smallest_odd) {
	smallest_odd = b;
      }
    }
  }
  if (sum % 2 != 0) {
    sum -= smallest_odd;
  }
  if (sum > 0) {
    printf("%d\n", sum);
  } else {
    printf("NIESTETY\n");
  }
}