poj 1001 Exponentiation

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


public class Main {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner in =new Scanner(System.in);
        while(in.hasNextBigDecimal())
        {
            BigDecimal ans=BigDecimal.ONE;
            double a=in.nextDouble();
            int b=in.nextInt();
            int i=1;
            for(i=1;i<=b;i++)
            {
                ans=ans.multiply(BigDecimal.valueOf(a));
            }
            ans=ans.stripTrailingZeros();
            String s=ans.toPlainString();
            char first=s.charAt(0);
            if(first==‘0‘)
            {
                System.out.println(s.substring(1, s.length()));
            }
            else
            System.out.println(s);
        }

    }
}