Binary Search Lower & Upper Bound | Codeforces EDU B, C, D Solved (CP Mastery)

Welcome to Part 2 of the Binary Search Series for Competitive Programming! In this video, we take your understanding deeper with Lower Bound and Upper Bound — two powerful tools to solve advanced Binary Search problems in CP. 🚀 What You’ll Learn: Core difference between lower bound and upper bound How to choose the right one in contests Solving Codeforces EDU Step 1 Problems B, C, D with clean, reusable template Debugging edge cases and writing efficient search conditions 🎯 These are not just textbook examples — they reflect the types of problems that help you climb the ranks on Codeforces, AtCoder, and beyond. 🧠 Whether you're preparing for contests or interviews, this episode will sharpen your Binary Search intuition. 📎 Problem Links: 👉 CF EDU Step 1: https://codeforces.com/edu/course/2/lesson/6/1/practice 👉 CF EDU Step 1 B (Closest to the Left) : https://codeforces.com/edu/course/2/lesson/6/1/practice/contest/283911/problem/B 👉 CF EDU Step 1 C (Closest to the Right ) : https://codeforces.com/edu/course/2/lesson/6/1/practice/contest/283911/problem/C 👉 CF EDU Step 1 D (Fast search ) : https://codeforces.com/edu/course/2/lesson/6/1/practice/contest/283911/problem/D 🔔 Subscribe for the full Binary Search CP Series — Templates, Logic, and Ratings Boost! #BinarySearch #CompetitiveProgramming #Codeforces #LowerBound #UpperBound #CodeforcesEDU