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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 ...

Introduction to Competitive Programming Contests Examples : Move Zeroes Majority Element

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

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

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

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