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#include <cstdio>
using namespace std;

int sum = 0;
int min_odd = 1001;
int n, tmp;

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