11021번

#include<iostream>
#include<vector>
using namespace std;
int main(void)
{
	int A = 0;
	int B = 0;
	int T = 0;
	cin >> T;
	for(int i=0;i<T;i++)
	{
		
		cin >> A >> B;
		cout << "Case #" << i + 1 << ":" << " " << A + B << endl;
		
	}
}