UVa 10494 If We Were a Child Again

UVa 10494 If We Were a Child Again

第一次用Java做题。
在OJ上提交Java题目主类名为Main。
以下是我的代码：

import  java.util.Scanner;
import  java.math.BigInteger;

public   class  Main
{
     public   static   void  main(String[] args)
    {
        Scanner cin = new  Scanner(System.in);
         while (cin.hasNext())
        {
            BigInteger a,b;
            String c;
            a = cin.nextBigInteger();
            c = cin.next();
            b = cin.nextBigInteger();

             if (c.charAt( 0 ) == ' / ' )
                System.out.println(a.divide(b));
             else
                System.out.println(a.mod(b));
        }
    }
}