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#include <iostream>
#include <string>
#include <cctype>

#define SIZE_OF_ARRAY(x) (sizeof(x) / sizeof(*(x)))

typedef unsigned int uint;

static char get_char_buffer[4 * 1024];
static std::size_t get_char_buffer_i = SIZE_OF_ARRAY(get_char_buffer);
static std::size_t get_char_buffer_n = SIZE_OF_ARRAY(get_char_buffer);

static char get_char_prefix = 0;
static char get_char_result = 0;

int get_char()
{
	get_char_result = 0;

	if (get_char_prefix)
	{
		get_char_result = get_char_prefix;

		get_char_prefix = 0;
	}
	else if (get_char_buffer_n == 0)
	{
		get_char_result = std::char_traits<char>::eof();
	}
	else if (get_char_buffer_i < get_char_buffer_n)
	{
		get_char_result = get_char_buffer[get_char_buffer_i++];
	}
	else
	{
		std::cin.read(get_char_buffer, SIZE_OF_ARRAY(get_char_buffer));

		get_char_buffer_i = 0;
		get_char_buffer_n = std::cin.gcount();

		return get_char();
	}

	return get_char_result;
}

void unget_char()
{
	get_char_prefix = get_char_result;
}

uint get_uint()
{
	int c;
	while (isspace(c = get_char()));

	uint value = (c - '0');

	while (isdigit(c = get_char()))
	{
		value = (10 * value) + (c - '0');
	}

	return value;
}

int main()
{
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(0);

	uint n = get_uint();

	uint sum = 0;
	uint count_odd = 0;
	uint min_odd = 1001;

	for (uint i = 0; i < n; ++i)
	{
		uint a = get_uint();

		sum += a;

		if (a % 2)
		{
			++count_odd;

			if (a < min_odd)
			{
				min_odd = a;
			}
		}
	}

	uint result = sum;

	if (count_odd % 2)
	{
		result -= min_odd;
	}

	if (result)
	{
		std::cout << result << '\n';
	}
	else
	{
		std::cout << "NIESTETY\n";
	}

	return 0;
}