import java.util.Scanner; class MyCalculator { /* * Create the method long power(int, int) here. */ public long power(int n, int p) throws Exception{ if (n==0 && p ==0) {throw new Exception ("n and p should not be zero."); } else if(n<0 || p<0) {throw new Exception ("n or p should not be negative."); } else return (long)Math.pow(n, p);

}

}

// Tac dung cua hasNext() trong Scanner: giup cho method power khong tu dong thoat // khi con dang nhap du lieu tiep theo

// Neu khong co hasNext() thi chi chay duoc method power voi chi mot lan nhap du lieu public class Solution { public static final MyCalculator my_calculator = new MyCalculator(); public static final Scanner in = new Scanner(System.in);

public static void main(String[] args) {
    while (in .hasNextInt()) {
        int n = in .nextInt();
        int p = in .nextInt();

        try {
            System.out.println(my_calculator.power(n, p));
        } catch (Exception e) {
            System.out.println(e);
        }
    }
}

}