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#include<iostream>

using namespace std;

unsigned long long n, sum = 0, lowest_odd = 1001, t;

int main() {
	ios_base::sync_with_stdio(0);
	cin >> n;
	for( int i = 0; i < n; i++ ) {
		cin >> t;
		sum += t;
		if( ( t % 2 ) == 1 ) {
			if( t < lowest_odd ) lowest_odd = t;
		}
	}

	if( sum == 0 ) {
		cout << "NIESTETY" << endl;
		return 0;
	}

	if( sum == lowest_odd ) {
		cout << "NIESTETY" << endl;
		return 0;
	}

	if( sum % 2 == 0 ) {
		cout << sum << endl;
		return 0;
	}

	cout << sum - lowest_odd << endl;
	return 0;

}