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#include <cstdio>
#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
using namespace std;


int main()
{
	ios_base::sync_with_stdio(false);
	int n;
	cin >> n;
	
	int a;	
	int sum, smallest;
	sum=0;
	smallest=1000000001;
	for( int i=0 ; i<n ; i++ ) {
		cin >> a;
		sum += a;
		if( a%2==1 && a<smallest )
			smallest = a;
	}
	
	if( sum%2==0 )
		cout << sum << endl;
	else if( smallest<=1000 && sum-smallest>0 )
		cout << sum-smallest << endl;
	else
		cout << "NIESTETY" << endl;	
	
	
	return 0;
}