★★★ Hard

■	Leetcode # 2940. Find Building Where Alice and Bob Can Meet	2024/12/22
■	Leetcode # 2867. Count Valid Paths in a Tree	2023/10/04
■	Leetcode # 2876. Count Visited Nodes in a Directed Graph	2023/10/01
■	Leetcode # 2862. Maximum Element-Sum of a Complete Subset of Indices	2023/09/19
■	Leetcode # 1483. ⭐️ Kth Ancestor of a Tree Node	2023/09/11
■	Leetcode # 2846. Minimum Edge Weight Equilibrium Queries in a Tree	2023/09/10
■	Leetcode # 632. Smallest Range Covering Elements from K Lists	2023/09/06
■	Leetcode # 2444. Count Subarrays With Fixed Bounds	2023/09/05
■	Leetcode # 1183. Maximum Number of Ones	2023/08/29
■	Leetcode # 68. Text Justification	2023/08/24
■	Leetcode # 1335. Minimum Difficulty of a Job Schedule	2023/08/18
■	Leetcode # 239. ⭐️ Sliding Window Maximum	2023/08/16
■	Leetcode # 2818. Apply Operations to Maximize Score	2023/08/13
■	Leetcode # 1770. Maximum Score from Performing Multiplication Operations	2023/08/08
■	Leetcode # 2361. Minimum Costs Using the Train Line	2023/08/02
■	Leetcode # 664. Strange Printer	2023/07/30