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#include<cstdio>

int min(int a, int b) {
  if (a > b) return b;
  else return a;
}

int main() {

  int n;

  scanf("%d", &n);

  unsigned long long sum = 0;

  int min_odd = 999999999;
  int odd_odd = 0;

  while (n--) {
     int a;
     scanf("%d", &a);

     if (a % 2 == 0) sum += a;
     else {
       min_odd = min(min_odd, a);
       if (odd_odd == 0) {
         odd_odd = a;
       } else {
         sum += odd_odd + a;
         odd_odd = 0;
       }
     }
  }

  if (odd_odd != 0) {
    sum += odd_odd - min_odd;
  }

  if (sum == 0) 
    printf("NIESTETY\n");
  else
    printf("%llu\n", sum);

  return 0;
}