https://www.acmicpc.net/problem/11022
import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner s=new Scanner(System.in);
int t=s.nextInt();
for(int i=1;i<=t;i++){
int a=s.nextInt();
int b=s.nextInt();
System.out.format("Case #%d: %d + %d = %d\n",i,a,b,a+b);
}
}
}