<span style="font-size:14px;">import java.math.BigDecimal;
import java.util.Scanner;
public class Main{
public static void main (String args[]){
Scanner cin =new Scanner(System.in);
int T=cin.nextInt();
for(int i=1;i<=T;i++){
String A=cin.next();
String B=cin.next();
BigDecimal a= new BigDecimal(A);
BigDecimal b= new BigDecimal(B);
System.out.println("Case "+i+":");
System.out.println(A+" + "+B+" = "+a.add(b));
if(i!=T)
System.out.println();
}
}
}</span>
<span style="font-size:14px;">
</span>
<span style="font-size:14px;">水题!</span>