[Codeforces] 2185A - Prefix Sum | C++ Solution & Explanation

In this video, I walk through the solution to the Codeforces problem “Prefix Sum”, explaining the key intuition and implementation step by step using C++. We break down the problem, focus on how prefix maximums work, and show why placing the maximum element at the front leads to the optimal result. This problem is a great example of identifying an upper bound and using a simple observation to reduce the solution to a clean and efficient approach. I’m still learning and improving, so if you know a cleaner implementation, an alternative way to think about the problem, or have any helpful competitive programming tips, I’d love to hear your feedback in the comments! 📌 Language Used: C++ 📌 Difficulty: Beginner 📌 Topic: Greedy/Prefix Sum If this video helped you, consider liking, commenting, and subscribing for more Codeforces walkthroughs and competitive programming content ➕🚀