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#include <cstdio>

int banknotes[1000000];
int n;

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