🚀 LeetCode 3020 – Find the Maximum Number of Elements in Subset | C++

In this video, we solve LeetCode Problem 3020 – Find the Maximum Number of Elements in Subset step by step. We'll begin by understanding the problem statement, explore the intuition behind the solution, discuss why a brute-force approach is inefficient, and then build the optimal hash map + mathematical approach that efficiently finds the maximum valid subset size. The video also includes a detailed dry run, complete code walkthrough in C++ and Python, and a full Time & Space Complexity Analysis to help you master this interview problem. Whether you're preparing for coding interviews, LeetCode, or competitive programming, this explanation will help you understand the logic instead of just memorizing the solution. ⏱️ Timeline 00:00 Intro & Problem Explanation 00:20 Understanding the Problem 02:36 Visual Representation 04:22 Dry Run with Example 06:29 Edge Cases 09:01 C++ Implementation 11:15 Another Edge Case 12:18 C++ Implementation 12:56 Time & Space Complexity 💻 Code 🔹 GitHub Repository https://github.com/zorocodezz-coder/L... 🔹 LeetCode Problem https://leetcode.com/problems/find-th... 📚 Topics Covered Hash Map Frequency Counting Greedy Observation Mathematical Pattern Data Structures Interview Problem LeetCode 3020 C++ Solution Complexity Analysis 🔥 Tags LeetCode 3020 Find the Maximum Number of Elements in Subset LeetCode Solution C++ Hash Map Frequency Map Coding Interview Competitive Programming DSA Algorithms Programming LeetCode Explained 📢 Hashtags #leetcode #dsa #cpp #algorithms #coding #programming #interviewprep #competitiveprogramming #codehunt