LCS (AtCoder DP F) | Longest Common Subsequence | DP + Reconstructing the Sequence

In this video, we solve the 𝐋𝐨𝐧𝐠𝐞𝐬𝐭 𝐂𝐨𝐦𝐦𝐨𝐧 𝐒𝐮𝐛𝐬𝐞𝐪𝐮𝐞𝐧𝐜𝐞 (𝐋𝐂𝐒) problem from the 𝐀𝐭𝐂𝐨𝐝𝐞𝐫 𝐄𝐝𝐮𝐜𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐃𝐏 𝐂𝐨𝐧𝐭𝐞𝐬𝐭 (Problem F).⁣
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We explore:⁣
- What the LCS problem actually means⁣
- Why greedy or brute force approaches don’t work⁣
- How to build a bottom-up DP solution using a 2D table⁣
- And how to reconstruct the actual subsequence from the table⁣
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This is one of the most fundamental and frequently asked dynamic programming problems in coding interviews and competitive programming.⁣
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Problem link : https://atcoder.jp/contests/dp/tasks/dp_f⁣
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This video is part of our beginner-friendly Dynamic Programming Series that gradually builds toward advanced DP topics. We cover problems from 𝐀𝐭𝐂𝐨𝐝𝐞𝐫, 𝐂𝐒𝐄𝐒, 𝐂𝐨𝐝𝐞𝐟𝐨𝐫𝐜𝐞𝐬, 𝐋𝐞𝐞𝐭𝐂𝐨𝐝𝐞, 𝐂𝐨𝐝𝐞𝐂𝐡𝐞𝐟, and more.⁣
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#LCS #AtCoderDP #DynamicProgramming #StringDP #CompetitiveProgramming

Видео LCS (AtCoder DP F) | Longest Common Subsequence | DP + Reconstructing the Sequence канала Yash Poonia