import java.util.Scanner;
public class Main
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
for (int i=1; i<=n; i++)
{
int a = sc.nextInt();
int b = sc.nextInt();
int result = a+b;
System.out.println("Case #" + i + ": " + a + " + " + b + " = " + result);
}
}
}