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#include <cstdio>

int main(){
	int n, a, sum = 0, min = 1001;
	scanf("%d", &n);
	for(int i = 0; i < n; i++){
		scanf("%d", &a);
		sum += a;
		if(a % 2 == 1 && a < min)
			min = a;
	}
	if(sum % 2 == 1)
		sum -= min;
	if(sum > 0)
		printf("%d\n", sum);
	else
		printf("NIESTETY\n");
	
	return 0;
}