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 = 0;
int b = 0;
int sum = 0;
for(int i = 1; i <= n; i++) {
a = sc.nextInt();
b = sc.nextInt();
sum = a + b;
System.out.println("Case #" + i +": " + a + " + " + b + " = " + sum);
}
sc.close();
}
}