Two posts with a target sum

views holds the number of views for each post. Complete the function solution, which returns the number of ways to pick two different posts whose views add up to target.

The order of picking does not matter. Even if two posts have the same number of views, they count as different posts.

Function

solution(views, target)

Constraints

• The length of views is from 2 to 300.
• The number of views for each post is an integer from 0 to 10,000, and target is an integer from 0 to 20,000.

Examples

Starter code

def solution(views, target):
    answer = 0
    return answer