#include
using?namespace?std;
int?main（）{
????int?T;
????scanf（“%d“&T）;
????for（int?cs=1;cs<=T;++cs）{
????????bool?ans=0;
????????int?n;
????????scanf（“%d“&n）;
????????for（int?l=1rt;l<=n;l=r+1）{
????????????t=n/lr=n/t;
????????????ans^=r-l+1&t&1;
????????}
????????printf（“Case?%d:?“cs）;
????????puts（ans?“odd“:“even“）;
????}
}