class power:
    def pow(self,x,n):
        if x==0 or x==1 or n==1:
            return x
        if x==-1:
            if n%2==0:
                return 1
            else:
                return -1
        if n==0:
            return 1
        if n<0:
            return 1/self.pow(x,-n)
        val = self.pow(x,n//2)
        if n%2==0:
            return val*val
        return val*val*x
print(power().pow(2,3))
            
        
        
