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#include <iostream>
using namespace std;

int main()
{
	int n, m_odd=10000001;
	unsigned long long int sum=0;
	cin >> n;
	for (int i = 0; i < n; i++)
	{
		int tmp;
		cin >> tmp;
		m_odd = ((tmp & 1) && (m_odd > tmp)) ? tmp: m_odd;
		sum += tmp;
	}
	if (((sum & 1) && m_odd == 10000001) || (n == 1 && (sum & 1))) cout << "NIESTETY" << endl;
	else cout << ((sum & 1) ? sum - m_odd : sum) << endl;
	return 0;
}