Even Odds Explained | O(1) Math Trick | Codeforces Problem Simplified | Competitive programming. скачать в хорошем качестве

Even Odds Explained | O(1) Math Trick | Codeforces Problem Simplified | Competitive programming.

In this video, we solve the famous Codeforces problem *Even Odds* using a simple but powerful mathematical observation. Given a number n (up to 10¹² 😱), we rearrange numbers such that: • All odd numbers come first • Followed by all even numbers Your task is to find the number at the k-th position — without building the array. 🚀 Key Highlights: ✔ How to read constraints correctly ✔ Why loops will TLE for large n ✔ O(1) time complexity solution ✔ Mathematical pattern observation ✔ Clean and interview-ready explanation This problem is a perfect example of how *constraints guide the solution approach* in competitive programming. 📌 Topics Covered: • Time Complexity Analysis • O(1) Math-Based Solution • Codeforces Problem Solving • Interview & CP Mindset If you’re preparing for: ✔ Competitive Programming ✔ Coding Interviews ✔ DSA & Problem Solving Whether you're preparing for FAANG, product-based companies, coding rounds, or want to strengthen your fundamentals, this channel brings you the best structured DSA explanations with zero confusion. Step-by-step logic Mathematical reasoning Multiple approaches (Naive → Optimized) Time & Space complexity Real interview insights Clean and easy-to-understand code Data Structures (Arrays, Strings, Stacks, Queues, Trees, Graphs, LinkedList, Hashing, Heaps) Algorithms (Sorting, Searching, Binary Search, Greedy, DP, Recursion, Backtracking, Graph Algorithms) Math Logic for coding (Number Theory, Combinatorics, Modular Arithmetic) Coding interview questions with full proof and code Competitive programming tricks and optimizations LeetCode, GFG, Codeforces, HackerRank problem explanations Pattern printing & logic building Time complexity mastery 👍 Like the video 💬 Comment your doubts 🔔 Subscribe for daily coding content 📤 Share with your coding friends Your support motivates me to create more high-quality content. Tags: #DSA #Coding #CompetitiveProgramming #Programmer #DataStructures #Algorithms #LeetCode #GeeksForGeeks #CodingInterview #SoftwareEngineer #CodeWithMe #MathInCode #Optimization #CP #Java #Python #C++ #LogicBuilding #ProblemSolving #TechInterview #ProgrammingTutorial #ComputerScience #CodingChallenge #DSATutorial #CodingForBeginners #Code #BinarySearch #Recursion #DynamicProgramming coding, dsa, data structures and algorithms, competitive programming, problem solving, coding interview, interview preparation, geeks for geeks, leetcode solutions, codeforces, hackerRank, programming tutorial, algorithm explanation, data structures tutorial, dynamic programming, recursion, binary search, greedy algorithms, coding tricks, optimize code, coding shortcuts, math logic in code, beginners coding, java coding, python coding, cpp coding, technical interview, placements preparation, coding questions, solved problems, coding solution, youtube coding channel, logic building, number theory, mathematics for coding, time complexity, space complexity