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#include <iostream>
#include <algorithm>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv)
 {
 	int n;
 	cin >> n;
 	int a;
 	int ws=100000;
 	int np=0;
 	int wynik=0;
 	for (int i=0; i <n; i++)
 	{
 		cin >> a;
 		wynik+=a;
 		if (a%2!=0)
 		{
 		//	cout << a << endl;
 			np++;
 			ws=min(ws,a);
		 }
 		
 	}
 //	cout << ws;
 	if(n==1 && np==1)
 	cout << "NIESTETY";
 	else
 	{
 		if(wynik%2==1)
 		{
 			cout<<wynik-ws;
		 }
		 else
		  	cout << wynik << endl;
	 }

	return 0;
}