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// kie.cpp : Defines the entry point for the console application.
//



#include "stdio.h"

#define		NN	1000

long	 bb[NN+1];
long	 b, i, n, s, k, m;

int main()
{
	scanf("%ld", &n);
	for (i=0; i<n; i++)
	{
		scanf("%ld", &b);
		bb[b]++;
		s	+= b;
	}

	for (i=1; i<=NN; i+=2)
	{
		b	= bb[i];
		if (b!=0)
		{
			k	+= b;
			if (m==0)
				m	= i;
		}
	}

	if ((k%2)==1)
		s	-= m;

	if (s==0)
		printf("NIESTETY\n");
	else
		printf("%ld\n", s);

	return 0;
}