hdu(No.1002)

注意java不要有包名(并且严格按照输出，一个换行符都不能少)：

import java.math.BigInteger;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int T, i = 1;

        T = sc.nextInt();

        BigInteger i1, i2;

        while (true) {
i1 = sc.nextBigInteger();

            i2 = sc.nextBigInteger();

            System.out.println("Case " + i + ":");

            if (i < T) {

                System.out.println(i1 + " + " + i2 + " = " + i1.add(i2));

                System.out.println();

            } else {

                System.out.println(i1 + " + " + i2 + " = " + i1.add(i2));

                break;

            }

            i++;

        }

    }

}

hdu(No.1002)