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#include<cstdio>
#define INF 2000000001

int main() {
  int sum = 0;
  int mini = INF;
  int n;
  scanf("%d", &n);

  for (int i = 0; i < n; i++) {
    int c;
    scanf("%d", &c);
    sum += c;
    mini = (c%2 == 0 || c > mini) ? mini : c;
  }

  if (sum%2 == 0 && sum > 0) {
    printf("%d\n", sum);
  }
  else if (sum-mini > 0) {
    printf("%d\n", sum-mini);
  }
  else {
    printf("NIESTETY\n");
  }

return 0;
}