Comments you can see

comments holds the IDs of the people who wrote the comments on a post, in the order the comments were written: comments[i] is the ID of the person who wrote comment i. blocked holds the IDs of the people you have blocked, and the same ID may appear more than once in blocked.

You cannot see the comments written by people you have blocked. Complete the function solution, which returns the number of comments you can see.

Function

solution(comments, blocked)

Constraints

• The lengths of comments and blocked are each from 1 to 100,000.
• Each ID is a string of lowercase English letters and digits, with a length from 1 to 20.

Examples

Starter code

def solution(comments, blocked):
    answer = 0
    return answer