// Krzysztof Baranski
#include <cstdio>

int main() {
  int n;
  scanf("%d", &n);

  bool odd = false;
  long long sum = 0;
  long long min = -1;
  while(n--) {
    int next;
    scanf("%d", &next);
    sum += next;
    if(next % 2) {
      odd = !odd;
      if(min == -1 || next < min) {
        min = next;
      }
    }
  }

  if(odd) sum -= min;
  if(sum != 0) {
    printf("%lld\n", sum);
  } else {
    printf("NIESTETY\n");
  }

  return 0;
};