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#include <cstdio>

const int MAXN = 1005;

int main() {
  int n;
  int res = 0;
  int num_odds = 0, smallest_odd = MAXN;
  scanf("%d", &n);
  for (int i = 0; i < n; ++i) {
    int a;
    scanf("%d", &a);
    res += a;
    if (a % 2 == 1) {
      ++num_odds;
      if (a < smallest_odd) {
        smallest_odd = a;
      }
    }
  }
  if (smallest_odd == MAXN) {
    smallest_odd = 0;
  }
  if (num_odds % 2 == 1) {
    res -= smallest_odd;
  }
  if (res == 0) {
    printf("NIESTETY\n");
  } else {
    printf("%d\n", res);
  }
  return 0;
}