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#include <stdio.h>
typedef unsigned int I;
typedef unsigned long long L;

int main() {
  I n, a;
  scanf("%u\n", &n);

  I minnp = 1u<<30;
  L sum = 0;
  for (I i=0; i<n; ++i) {
      scanf("%u", &a);
      sum += a;
      if ((a & 1) && a < minnp)
          minnp = a;
  }

  if (sum & 1) {
      sum -= minnp;
  }
  
  if (sum == 0)
      printf("NIESTETY\n");
  else
      printf("%llu\n", sum);
  return 0;
}