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#include<cstdio>
int main () {

	int i, n, a, min, sum;
	sum = 0;
	min = 999999;
	scanf("%d", &n);
	
	for(i = 0; i < n; i++) {
		scanf("%d", &a);
		sum += a;
		if(a < min && a % 2 == 1) {
			min = a;
		}
	}
	
	if(n == 1 && a % 2 == 1) {
		printf("NIESTETY");
	} else if(sum % 2 == 1) {
		printf("%d", (sum - min));
	} else {
		printf("%d", sum);
	}
	
	return 0;
}