这道题目莫名其妙的wa，又莫名其妙的过了。

1 import java.util.Scanner; 2 import java.math.BigDecimal; 3  4 public class Main { 5     public static void main(String[] args) { 6         Scanner cin = new Scanner(System.in); 7         while (cin.hasNext()) { 8             BigDecimal br = cin.nextBigDecimal(); 9             int n = cin.nextInt();10             String ans = br.pow(n).stripTrailingZeros().toPlainString();11             int i;12             for (i=0; i