Скачать или смотреть Problem 3318 — Find X-Sum of All K-Long Subarrays I

In this video, we solve LeetCode Problem 3318 — Find X-Sum of All K-Long Subarrays I — step by step using C++.
We’ll understand the question in simple terms, break down the logic, and then go through the code line by line.

This problem focuses on frequency counting, sorting with custom rules, and the sliding window technique — all important concepts for interviews and DSA practice.
By the end of this video, you’ll clearly understand how to calculate the x-sum for each subarray and why this approach works efficiently.

💻 Problem: LeetCode #3318 — Find X-Sum of All K-Long Subarrays I
🧠 Difficulty: Easy
📚 Topics: Arrays, Hash Map, Sorting, Sliding Window
⚙️ Language: C++

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