Orac and Models (CF) | Dynamic Programming + LIS Trick 🚀

🔥 In this video, we solve the famous Codeforces problem "Orac and Models" step by step!

👉 This problem is a variation of LIS (Longest Increasing Subsequence) using Dynamic Programming.

💡 What you’ll learn:
- How to identify LIS-based problems
- How to apply DP on indices instead of values
- Optimization using multiples (divisibility condition)
- Writing efficient O(n log n) / O(n log n-like) solutions

🧠 Key Concepts Covered:
✔ Dynamic Programming (DP)
✔ LIS Variation
✔ Divisibility-based transitions
✔ Competitive Programming Tricks

📌 Problem Insight:
We need to find the longest sequence such that:
- Indices follow divisibility (j % i == 0)
- Values are strictly increasing

🚀 Perfect for:
- Beginners learning DP
- Intermediate CP students
- Placement preparation

#codeforces #dp #competitiveprogramming #lis #coding

Видео Orac and Models (CF) | Dynamic Programming + LIS Trick 🚀 канала Astika Codes