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#include<iostream>
using namespace std;

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