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#include <cstdio>

int main() {
	int n;
	long long sum = 0;
	long long min = 1001;
	int odd_count = 0;
	scanf("%d", &n);
	for (int i = 0; i < n; ++i) {
		long long v;
		scanf("%lld", &v);
		sum += v;
		if (v & 0x1) {
			++odd_count;
			if (v < min)
				min = v;
		}
	}
	if (odd_count & 0x1) {
		sum -= min;
	}
	if (sum == 0)
		printf("NIESTETY\n");
	else
		printf("%lld\n", sum);

	return 0;
}