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#include <iostream>
#include <cmath>
#define int long long

using namespace std;

int n;
int s = 0;
int minO = 10000;
int tmp;

main (){
	ios_base::sync_with_stdio(false);

	cin >> n;

	for (int i = 0; i < n; ++i)
	{
		cin >> tmp;
		s += tmp;
		if(tmp % 2 != 0 && tmp < minO)minO = tmp;
	}
	if(s % 2 != 0)s -= minO;
	if(s == 0)cout << "NIESTETY" << endl;
	else cout << s << endl;
	return 0;
}