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#include <cstdio>
#include <cstdlib>

int main(int argc, const char *argv[])
{
  int n, a;
  scanf("%d", &n);
  int min_np = -1;
  long long sum = 0;
  for (int i = 0; i < n; i++)
  {
    scanf("%d", &a);
    sum += a;
    if (a % 2 == 1)
      if ((min_np < a) || (min_np == -1))
      {
        min_np = a;
      }
  }
  if (sum % 2 == 1)
  {
    if ((min_np == -1) || (n == 1))
    {
      printf("NIESTETY\n");
    }
    else
    {
      printf("%d\n", sum-min_np);
    }
  }
  else
  {
    printf("%lld\n", sum);
  }
  return 0;
}











//123qwe