1 Problem 1 : Article Views I ( https://leetcode.com/problems/article-views-i/ )
2 Problem 2 :Invalid Tweets ( https://leetcode.com/problems/invalid-tweets/ )
1 Problem 1 : Article Views I ( https://leetcode.com/problems/article-views-i/ )
2 Problem 2 :Invalid Tweets ( https://leetcode.com/problems/invalid-tweets/ )