HDU-1002

import java.math.BigDecimal;import java.util.Scanner;public class A_and_B {public static void main(String[] args) {Scanner cin=new Scanner(System.in);int i,n;String str1=null;String str2=null;String result=null;n=cin.nextInt();for(i=1;i<=n;i++){str1=cin.next();str2=cin.next();BigDecimal num1=new BigDecimal(str1);BigDecimal num2=new BigDecimal(str2);result=num1.add(num2).toString();System.out.println("Case "+i+":");System.out.println(str1+" + "+str2+" = "+result);if(i!=n){System.out.println();}}}}