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#include <iostream>
#include <cstring>


int main(void)
{
	int n, x, sumX, minX; 
	sumX = 0;
	minX = 999999;

	std::cin >> n;
	for (int i = 0; i < n; i++)
	{
		std::cin >> x;
		sumX += x;
		if ((x % 2 == 1) && (x < minX))
		{
			minX = x;
		}
	}

	if (sumX % 2 == 0) {
		std::cout << sumX;
	}
	else if (sumX > minX) {
		std::cout << (sumX - minX);
	}
	else {
		std::cout << "NIESTETY";
	}

	return 0;
}