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#include <iostream>
#include <algorithm>
using namespace std;
long long suma=0,a,t,i;
int main(){
	cin>>t;
	int sn[t];
	while(t--){
		cin>>a;
		if(a%2==0)suma=suma+a;
		else{sn[i]=a;i++;}
	}
	 sort( sn, sn + i );
	 while(i>2){
	 	if(i-2>=0)suma=suma+sn[i-1]+sn[i-2];
	 	i--;
	 }
	if(suma!=0)cout<<suma<<endl;
		else cout<<"NIESTETY\n";
	return 0;
}