#include<iostream>
using namespace std;


int main(){
	int n,s;
	cin>>n;
	for(int i=0;i<n;i++){
		cout<<"Case "<<i+1<<':'<<endl;
		cin>>s;
		for(int j=0;j<10;j++){
			s=s*s/100%10000;
			cout<<s<<endl;
		}
	}
	return 0;
}