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#include <cstdio>

int main(){
	int n;
	scanf("%d", &n);
	long long int sum = 0;
	long long int min_np = 1001LL;
	long long int a = 0;
	int il_np = 0;
	for(int i = 0; i < n; ++i){
		scanf("%lld", &a);
		sum += a;
		if((a % 2) == 1){
			il_np++;
			if(min_np > a) min_np = a;
		}
	}
	if((il_np % 2) == 1){
		sum -= min_np;
	}
	if(sum > 0){
		printf("%lld\n", sum);
	}else{
		printf("NIESTETY\n");
	}
}