HDU 1063大数求幂运算

import java.util.*;
import java.math.*;
import java.io.*;

public class Hdu1063{//提交时名字改为Main
  public static void main(String args[]){
    int n;
    BigDecimal R,res;
    String str;
    Scanner cin = new Scanner(System.in);
    
    while(cin.hasNext()){
     R = cin.nextBigDecimal();
     n = cin.nextInt();
     res = R.pow(n);
     
     str = res.stripTrailingZeros().toPlainString(); 
     if(str.charAt(0) == '0')
       System.out.println(str.substring(1));
     else
       System.out.println(str);  
    }
    
  }
 }