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#include<cstdio>
#include<iostream>
using namespace std;

int main()
{
	int n, a;
	long long int suma = 0;
	long int min = -1;
	scanf("%d", &n);
	for (int i = 0; i < n; i++)
	{
		scanf ("%d", &a);
		suma += a;
		if (a % 2 != 0)
			if (a < min || min == -1)
				min = a;
	}
	if (suma % 2 == 0)
		printf ("%lld", suma);
	else if (suma == min)
		printf ("NIESTETY");
	else
		printf ("%ld", suma - min);
	return 0;
}