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#include <cstdio>
#include <vector>

using namespace std;

int main(){
   int n;
   scanf("%d",&n);
   long long int suma = 0;
   int smallest = -1;
   for(int i=0;i<n;++i){
      int moneta;
      scanf("%d",&moneta);
      suma+=moneta;
      if(moneta%2==1){
         if(smallest==-1 || moneta<smallest) smallest=moneta;
      }
   }
   if(suma%2==0){
      printf("%lld\n",suma);
   }
   else{
      suma-=smallest;
      if(suma==0) puts("NIESTETY");
      else printf("%lld\n",suma);

   }
   return 0;
}