백준 #11021번 A + B - 7

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));
		}
		sc.close();
	}
}