POJ 1001 Exponentiation

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


public class Main {
    public static void main(String[] args) {
        int n;
        BigDecimal a;
        Scanner in = new Scanner(System.in);
        while(in.hasNext())
        {
            a = new BigDecimal(in.next());
            n = in.nextInt();
            a = a.pow(n);
            String s = a.toPlainString();
            int i,j;
            for(i=0;;i++)
                if(s.charAt(i)!='0') break;
            for(j=s.length()-1;;j--)
                if(s.charAt(j)!='0') break;
            if(s.charAt(j)=='.') j--;
            System.out.println(s.substring(i, j+1));
            
        }
    }
}