November Challenge 2017
Periodic Palindrome Construction, Chef Hates Palindromes
December Cook-Off 2017
Football Match, Beautiful Array
October Mega Cook-Off 2018 Division 2
Ada and the Staircase, Pumping Water
September Challenge 2018 Division 2
Table Game, Bad Shuffle, Chef and Adventures, Chef and Condition Zero (Challenge), War of XORs, Magician versus Chef
December Challenge 2018 Division 1
Max and Electrical Panel, Directing Edges, Chef and Interactive XOR
February Lunchtime 2019 Division 1
Roll the Bar, The Tricky Deal
March Challenge 2019 Division 1
Yet Again a Subarray Problem
June Challenge 2019 Division 1
Sum and GCD, Chef and Ingredients, Lent Money, Guddu on a Date
September Challenge 2020 Division 1
Chefina and Swap, Ada Matrix
July Cook-Off 2020 Division 1
Even-tual Reduction, OR-thodox Distinction
December Challenge 2020 Division 1
Calculus, String Operations, Positive Prefixes, Even Pair Sum
September Lunchtime 2020 Division 1
Robot Detector, Root the Tree
UWCOI 2021 (Rated for all)
Organisation, Array Swaps, Hidden Numbers
February Lunchtime 2021 Division 2
Average Sorting, Sed Max, Palpal Strings, Coprime Range
Code: Nium Challenge
Alphabet Difference, Divide Students Into Classes, Queries in an Array
