Good Prefixes Explained | Prefix Sum + Max Element Trick | C++ Codeforces
5:36
YouTubeBitChaos
Good Prefixes Explained | Prefix Sum + Max Element Trick | C++ Codeforces
In this video, we solve and explain the Codeforces problem "Good Prefixes" using a clean and efficient O(n) approach. 🔍 Problem Idea: A prefix is considered good if one element is equal to the sum of all other elements in that prefix. 💡 Key Insight: Only the maximum element can satisfy this condition. So for every prefix, we track: ️ ...
5 days ago
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