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#include <cstdio>

using namespace std;

int main(int argc, char* argv[]) {
	int n;
	int a;
	long sum = 0;
	int min_odd = 1001;
	scanf("%d\n", &n);
	for (int i = 0; i < n; i++) {
		scanf("%d", &a);
		sum += a;
		if ((a % 2 != 0) && (a < min_odd)) {
			min_odd = a;
		}
	}
	if (sum % 2 == 0) 
		printf("%ld\n", sum);
	else
		if (n == 1)
			printf("NIESTETY\n");
		else
			printf("%ld\n", (sum - min_odd));
	return 0;
}