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#include <iostream>
#include <stdio.h>

using namespace std;

int main()
{
	int ile;
	unsigned long long suma = 0, minNieparzysta = 18446744073709551615, temp;

	scanf("%llu", &ile);
	while (ile--){
		scanf("%llu", &temp);
		if (minNieparzysta > temp && temp%2!=0) minNieparzysta = temp;
		suma += temp;
	}

	if (suma % 2 != 0)suma -= minNieparzysta;
	if (suma % 2 != 0 || suma==0) printf("NIESTETY");
	else printf("%llu",suma);
}