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#include <cstdio>

using namespace std;

int sum, minnp, a, n;

int main()
{
       scanf("%d", &n);
       minnp = 1001;
       for(int i=0; i<n; i++)
       {
               scanf("%d", &a);
               sum += a;
               if(a % 2 == 1 && a < minnp)
                    minnp = a;
       }
       if(sum % 2 == 0)
            printf("%d\n", sum);
       else
       {
           if(n < 2)
                  printf("NIESTETY\n");
           else
               printf("%d\n", sum - minnp);
       }
       return 0;
}