# Is it a power of 2?

Given a positive integer

`n`

, your task is to find out if it’s a power of 2 or not.In case it’s a power of 2, the program should print

`Yes`

, and it should print `No`

otherwise.Input | Output |

1 | Yes |

8 | Yes |

15 | No |

## Hint

You can have an auxiliary variable

`powerof2 = True`

and update it accordingly#### Constraints

Time limit: 1 seconds

Memory limit: 512 MB

Output limit: 1 MB