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#include <iostream>

using namespace std;

int main()
{
	int n;
	short a, x = 1000;

	cin >> n >> a;
	int all = a;
	
	if (n!=1)
	{
		for (int i = 1; i < n; i++)
		{
			cin >> a;
			all += a;
			if (a % 2 == 1 && a < x)
			x = a;
		}
		
		if (all % 2 == 1)
		cout << all-x;
	}
	else {
		if (all % 2 == 0)
		cout << all;
		else
		cout << "NIESTETY";
	}

	return 0;
}