#include <iostream>
using namespace std;

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