Personal blog and portfolio of Md. Rashed Raihan — a CSE undergraduate at MBSTU writing about algorithms, problem-solving, and software engineering.https://portfolio-byd.pages.dev/en-ushttps://portfolio-byd.pages.dev/blog/binary-search-beyond-basics/https://portfolio-byd.pages.dev/blog/binary-search-beyond-basics/Most programmers learn binary search on sorted arrays. In competitive programming, you binary-search the answer — and that changes everything.Thu, 28 May 2026 00:00:00 GMTalgorithmscompetitive-programmingbinary-searchhttps://portfolio-byd.pages.dev/blog/understanding-segment-trees/https://portfolio-byd.pages.dev/blog/understanding-segment-trees/A thorough walkthrough of segment trees with lazy propagation — from first principles to real contest applications.Wed, 20 May 2026 00:00:00 GMTdata-structurescompetitive-programmingalgorithms