using namespace std;
unsigned int cnt,tmp,sum,i;
int t;
int main(){
	while(cin>>t){
		sum=0;
		while(t--){
			cin>>tmp;
			cnt=0;
			while(tmp){
				if(tmp&1)cnt++;
				tmp=tmp>>1;
			}
			sum+=cnt;
		}
		i++;
		cout<<"Case #"<<i<<": "<<sum<<"\n";
	}
	return 0;
}