Codeforces 1400 | Matching Arrays | Greedy Algorithm Explained

In this video, we solve 𝐂𝐨𝐝𝐞𝐟𝐨𝐫𝐜𝐞𝐬 𝐏𝐫𝐨𝐛𝐥𝐞𝐦 𝐂 - 𝐌𝐚𝐭𝐜𝐡𝐢𝐧𝐠 𝐀𝐫𝐫𝐚𝐲𝐬 (𝟏𝟒𝟎𝟎 𝐫𝐚𝐭𝐞𝐝) 𝐮𝐬𝐢𝐧𝐠 𝐚 𝐠𝐫𝐞𝐞𝐝𝐲 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡.⁣
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The task:⁣
We are given two arrays a and b, and we want to rearrange b so that the beauty (the number of indices i where a[i] is greater than b[i]) equals a given integer x.⁣
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What you’ll learn in this video:⁣
✅ How to think about rearrangements in greedy problems⁣
✅ Step-by-step breakdown of the logic⁣
✅ Why sorting + placement strategy works⁣
✅ Clean and efficient C++ implementation⁣
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This problem is a neat application of 𝐠𝐫𝐞𝐞𝐝𝐲 + 𝐜𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭𝐢𝐯𝐞 𝐭𝐡𝐢𝐧𝐤𝐢𝐧𝐠, making it a great addition to the Greedy Algorithms Series in competitive programming 🚀⁣
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This is part of my 𝐆𝐫𝐞𝐞𝐝𝐲 𝐀𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬 𝐒𝐞𝐫𝐢𝐞𝐬, where I cover tricky but important problems that sharpen your competitive programming skills 🚀⁣⁣⁣
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𝐓𝐡𝐢𝐬 𝐢𝐬 𝐚 𝐦𝐮𝐬𝐭-𝐬𝐨𝐥𝐯𝐞 𝐩𝐫𝐨𝐛𝐥𝐞𝐦 𝐢𝐟 𝐲𝐨𝐮 𝐰𝐚𝐧𝐭 𝐭𝐨 𝐦𝐚𝐬𝐭𝐞𝐫 𝐠𝐫𝐞𝐞𝐝𝐲 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬 𝐟𝐨𝐫 𝐜𝐨𝐦𝐩𝐞𝐭𝐢𝐭𝐢𝐯𝐞 𝐩𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 (𝐂𝐨𝐝𝐞𝐟𝐨𝐫𝐜𝐞𝐬, 𝐂𝐒𝐄𝐒, 𝐀𝐭𝐂𝐨𝐝𝐞𝐫, 𝐞𝐭𝐜.).⁣⁣⁣⁣⁣⁣⁣⁣
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👉 𝐏𝐫𝐨𝐛𝐥𝐞𝐦 𝐋𝐢𝐧𝐤:⁣ https://codeforces.com/problemset/problem/1896/C⁣
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🔗 𝐏𝐥𝐚𝐲𝐥𝐢𝐬𝐭:https://youtube.com/playlist?list=PLtfqa971vD5EGwk0cXB9NwvcCMiQHrEJK&si=_4JM-tn042HlTpNy⁣⁣⁣⁣⁣⁣⁣⁣
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💡 Perfect for:⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
- Competitive programmers⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
- Data structure & algorithms learners⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
- Coding interview prep⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
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📌 Watch this till the end to fully understand the intuition, not just the code.⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
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👉 Whether you are a beginner or looking to strengthen your problem-solving skills, this course will help you 𝐭𝐡𝐢𝐧𝐤 𝐥𝐢𝐤𝐞 𝐚 𝐜𝐨𝐦𝐩𝐞𝐭𝐢𝐭𝐢𝐯𝐞 𝐩𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐞𝐫 𝐚𝐧𝐝 𝐚𝐩𝐩𝐥𝐲 𝐠𝐫𝐞𝐞𝐝𝐲 𝐚𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬 𝐜𝐨𝐧𝐟𝐢𝐝𝐞𝐧𝐭𝐥𝐲 𝐢𝐧 𝐜𝐨𝐧𝐭𝐞𝐬𝐭𝐬.⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
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👋 𝐖𝐞𝐥𝐜𝐨𝐦𝐞 𝐭𝐨 𝐭𝐡𝐞 𝐜𝐡𝐚𝐧𝐧𝐞𝐥!⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
I create content on 𝐂𝐨𝐦𝐩𝐞𝐭𝐢𝐭𝐢𝐯𝐞 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠, 𝐃𝐚𝐭𝐚 𝐒𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞𝐬 & 𝐀𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐬 (𝐃𝐒𝐀), 𝐚𝐧𝐝 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 𝐏𝐫𝐞𝐩𝐚𝐫𝐚𝐭𝐢𝐨𝐧.⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
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Видео Codeforces 1400 | Matching Arrays | Greedy Algorithm Explained канала Yash Poonia