Practice>Python>Sets>Set Mutations

hackerrank.com

Set Mutations

Problem link : https://www.hackerrank.com/challenges/py-set-mutations/problem?utm_campaign=challenge-recommendation&utm_medium=email&utm_source=24-hour-campaign&h_r=next-challenge&h_v=zen&h_r=next-challenge&h_v=zen&h_r=next-challenge&h_v=zen

Difficulty : Easy

Tip

• This problem is a bit difficult
• We can call a method with a name of it, please see getattr() for more detail
• getattr(s, c)(v) this is a key to resolve this problem
• c, *a = input().split(' ') c is fist item, *a is rest of all item

Solution

input() s = set(input().split(' ')) n = int(input()) for _ in range(n): c, *a = input().split(' ') v = set(input().split(' ')) getattr(s, c)(v) print(sum(map(int, s)))