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The Coders Cup is HackSussex's algorithmic coding competition for students! The live finals are where we place the top of our ...

In this podcast, I sat down with three competitive programmers and ICPC participants, Agnay, Gaurish, and Ayushi, to break down ...

Masterclass by Errichto Kamil Debowski AKA Errichto Algorithms on ICPC & Competitive Programming hard problems. GoForGold ...

Why did this ICPC Finalist leave his dream company, Rubrik? We sat down with Gaurish Baliga — ICPC Asia West Finalist, ...

We introduce prefix sums, a powerful preprocessing technique for answering repeated range-sum queries efficiently. We start with ...

Space sponsors my competitive programming initiatives, including intensive online bootcamps, livestreams like this one, and ...

Introduction to Competitive Programming Contests Examples : Move Zeroes Majority Element

We wrap up prefix techniques by connecting the ideas we've developed throughout the section. We review 1D prefix sums, prefix ...

Problem 1: https://leetcode.com/problems/number-of-sub-arrays-with-odd-sum/description/ Problem 2: https://www.geeksforgeeks ...

We introduce difference arrays, a technique for efficiently handling a large number of range updates. We start with the naïve ...

We practice recognizing prefix-sum problems without being told which technique to use. Using a “Hot Days” problem, we start with ...

Master CSES one problem at a time. The CSES Solution Library gives you clear, pattern-based explanations for ...