Write it using python

A HOTEL with 1000 rooms has 1000 waiters. Each waiter and room is given a number from 1- 1000 Initially, waiter with number 1 goes and closes doors of all rooms. After that waiter with number 2 goes and changes the state of doors corresponding to multiples of that 2. After that waiter number 3 goes and changes the state of doors corresponding to multiples of 3 So on and so forth Find the number of doors that are open after the 1000th waiter has returned. NOTE: Changes the state of door means that opened doors are closed and closed doors ae opened