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#include<cstdio>

int main() {
  int n;
  scanf("%d", &n);
  int min_odd = -1;
  int sum = 0;
  for (int i = 0; i < n; i++) {
    int x;
    scanf("%d", &x);
    if (x % 2 == 1 && (min_odd == -1 || x < min_odd)) {
      min_odd = x;
    }
    sum += x;
  }
  if (sum % 2 == 0) {
    printf("%d\n",  sum);
  } else if (n == 1 || min_odd == -1) {
    printf("NIESTETY\n"); 
  } else {
    printf("%d\n", sum - min_odd);
  }
  return 0;
}