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#include <stdio.h>


int main(){
	int n;
	int suma = 0;
	int minOdd = 2000000000;
	int b;
	scanf("%d", &n);
	for (int i = 0; i < n; i++){
		scanf("%d", &b);
		suma += b;
		minOdd = (b % 2 == 1 && minOdd > b) ? b : minOdd;
	}
	//printf("%d %d\n", suma, minOdd);
	if (suma % 2 == 1) suma -= minOdd;
	if (suma > 0) printf("%d\n",suma);
	else printf("NIESTETY\n");
	return 0;
}