uva 10494 If We Were a Child Again

import java.util.Scanner;

import java.math.BigInteger;



public class Main{

    public static void main(String[] args){

        Scanner in = new Scanner(System.in);

        BigInteger a,b;

        String[] s;

        while(in.hasNextLine()){

            s = in.nextLine().split("\\s+");   //正则表达式，\\s+ 表示一个或多个空白字符

            a = new BigInteger(s[0]);

            b = new BigInteger(s[2]);

            if(s[1].equals("%"))

                System.out.println(a.mod(b));

            if(s[1].equals("/"))

                System.out.println(a.divide(b));

        }

    }

}