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#include <iostream>
#include <limits>

using namespace std;

int main() {
	ios_base::sync_with_stdio(false);
	
	int n;
	cin >> n;

	int sum = 0;
	int minodd = std::numeric_limits<int>::max();
	for ( int i=0; i<n; i++ ) {
		int a;
		cin >> a;
		sum += a;
		if ( (a%2) && (a<minodd) ) {
			minodd = a;
		}
	}
	if ( sum%2 ) {
		sum -= minodd;
	}
	if ( sum ) {
		cout << sum << "\n";
	} else {
		cout << "NIESTETY\n";
	}

	return 0;
}