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#include <cstdio>

int main(){
       int z,a,min,sum;
       sum = 0; 
       min = 1001;
       
       scanf("%d",&z);
       while(z--){
                  scanf("%d",&a);
                  if((a%2) && (min>a))min=a;
                  sum+=a;
       }
       if(sum%2){
                 sum -=min;
       }
       if(sum)printf("%d\n",sum);
       else printf("NIESTETY\n");
       
       return 0;
}