public String power(int n, int p){
        try{
            if(n<0 || p<0)
             throw new Exception("java.lang.Exception: n or p should not be negative.");
             else if(n==0&&p==0)
             throw new Exception("java.lang.Exception: n and p should not be zero.");
             else
            
            return ""+(long)Math.pow(n,p);
        }catch(Exception e){
            return e.getMessage();
        }
    }
    

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

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