import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int a, b;
for(int i = 0; i < n; i++) {
a = sc.nextInt();
b = sc.nextInt();
System.out.println("Case #" + (i + 1) + ": " + a + " + " + b + " = " + (a + b));
}
sc.close();
}
}