lightoj - 1116 - ekka dokka

#include<bits/stdc++.h>
using namespace std;
#define fast()(ios_base::sync_with_stdio(false),cin.tie(NULL));
typedef long long ll;
int main()
{
    ll t,w;
    cin>>t;
    for(int i=1; i<=t; i++)
    {
        cin>>w;
        ll even,odd;
        odd=w/2;
        even=2;
        if(w%2!=0)
            cout<<"Case "<<i<<": Impossible"<<endl;
        else
        {
            while(odd%2==0)
            {
                odd/=2;
                even*=2;
            }
            cout<<"Case "<<i<<": "<<odd<< " "<<even<<endl;
        }

    }
}