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#include <iostream>
#include <cstdint>
#include <limits>


int main()
{
	std::ios_base::sync_with_stdio(0);

	uint32_t N = 0;
	uint32_t even_sum = 0, odd_sum = 0;
	uint32_t odd_num = 0;
	uint32_t odd_min = std::numeric_limits<uint32_t>::max();

	std::cin >> N;

	//
	for (uint32_t i = 0; i < N; ++i)
	{
		uint32_t temp = 0;
		std::cin >> temp;

		if (temp % 2 == 0)
		{
			even_sum += temp;
		}
		else
		{
			odd_sum += temp;
			odd_min = std::min(odd_min, temp);
			odd_num++;
		}
	}

	//
	if (even_sum == 0 && odd_num == 1)
	{
		std::cout << "NIESTETY" << std::endl;
		return 0;
	}

	//
	if (odd_num % 2 != 0)
	{
		odd_sum -= odd_min;
	}

	std::cout << even_sum + odd_sum << std::endl;
	return 0;
}