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#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <cmath>

using namespace std;

#define min(a,b) (a<b)?a:b

int main()
{
	int n, s, a, l;
	l = 3000;
	s = 0;
	scanf("%d", &n);
	while (n --> 0)
	{
		scanf("%d", &a);
		s += a;
		if (a % 2 == 1)
		{
			l = min(l, a);
		}
	}
	if (s % 2 == 0 && s != 0)
	{
		printf("%d", s);
		return 0;
	}
	if (l % 2 == 1 && s - l > 0)
		printf("%d", s - l);
	else
		printf("NIESTETY");
	return 0;
}