K5kC | Code & More
Computer Science
Algorithms
Programming Languages
Database
System Design
Problems
Blind 75
Difficulty: Easy
Difficulty: Medium
Difficulty: Hard
Videos
Projects
Android
Data Science
Computer Vision
Simulations
Tools
UUID Generator
Code Formatter
Search
⌘K
Booking Concert Tickets in Groups
Copy title
Copy link
hard
Solve on LeetCode
Last edited: August 2, 2025
Related Tags
binary-indexed-tree
binary-search
design
leetcode
segment-tree
Please enable JavaScript to view the
comments powered by Disqus.