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#include <cstdio>
//#include <conio.h>
using namespace std;

#define MAXA 1002

int main()
{
	int n;
	scanf("%d", &n);

	int min_n = MAXA;
	int s_p = 0; int s_n = 0; //Suma parzystych; Suma nieparzystych
	for (int i = 0; i < n; i++)
	{
		int a; scanf("%d", &a);
		if (a % 2 == 0) //jest parzysta
			s_p += a;
		else
		{
			s_n += a;
			if (a < min_n)
				min_n = a;
		}
	}

	if (s_p == 0)
	{
		if (s_n % 2 == 0)
			printf("%d\n", s_n);
		else
		{
			if (s_n - min_n == 0)
				printf("NIESTETY\n");
			else
				printf("%d\n", s_n - min_n);
		}
	}
	else
	{
		if (s_n % 2 == 0)
			printf("%d\n", s_n + s_p);
		else
			printf("%d\n", s_n + s_p - min_n);
	}
	//_getch();
}