java11021.java

import java.util.Scanner;
public class java11021 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        for (int i=0; i<a; i++) {
            int n1 = sc.nextInt();
            int n2 = sc.nextInt();
            System.out.printf("Case #%d: %d\n",i+1,n1+n2);
        }
    }
}