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#include <cstdio>

using namespace std;

int main() {
	int n, a;
	scanf("%d", &n);

	int min = 1000001;
	long long total = 0;
	bool evenEven = true;

	while (n--) {
		scanf("%d", &a);
		total += a;
		
		if (a % 2 == 1) {
			evenEven = !evenEven;
			if (a < min) {
				min = a;
			}
		}
	}

	if (!evenEven) {
		total -= min;
	}
	if (total == 0) {
		printf("NIESTETY\n");
	} else {
		printf("%lld\n", total);
	}

	return 0;
}