and-or operators

power = input("Is there electric power? on/off? ")
internet = input("Is the internet modem connected? on/off? ")
computer = input("Is the computer connected on/off? ")
if (power == "on") and (internet == "on") and (computer == "on"):
    print ("You can surf the Internet" )
elif (power == "off") and (internet == "on") and (computer == "on"):
    print ("You need turn on the electric power")
elif (power == "on") and (internet == "off") and (computer == "on"):
    print ("You need turn on the internet modem")
elif (power == "on") and (internet == "on") and (computer == "off"):
    print ("You need turn on the computer" )
elif (power == "off") or (internet == "off") or (computer == "off"):
    print ("Please verify, you need turn on electric power, internet modem and the computer")
else:
    print("Please run again and type the correct options on/off")