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#include <iostream>

using llu = unsigned long long int;

int main()
{
	std::ios_base::sync_with_stdio(0);
	/*
	    P + P = P 
	    N + N = P
	    P + N = N
	*/
	llu n;
	std::cin >> n;

	llu ans = 0;
	int min_odd = 10000;
	
	int a;
	for (int i = 0; i < n; i++)
	{
		std::cin >> a;
		ans += a;
		if (a < min_odd && (a & 1))
		{
			min_odd = a;
		}
	}
	// std::cerr << "Ans = " << ans << std::endl;
	if ((ans & 1) == 0)
	{
		// Even
		std::cout << ans << std::endl;
		return 0;
	}
	else
	{
		// Odd
		if (min_odd != 10000)
		{
			if (ans - min_odd == 0)
			{
				std::cout << "NIESTETY" << std::endl;
				return 0;
			}
			else
			{
				std::cout << (ans - min_odd) << std::endl;
				return 0;
			}
		}
	}
	return 0;
}