November Cook-Off 2017
Online Chess, Random Pair, Skiing
December Cook-Off 2017
Beautiful Array, Football Match
April Lunchtime 2018 Division 2
Two vs Ten, The hardest gcd problem, Triple-tree decomposition
April Challenge 2018 Division 2
Weight of Numbers, Count Good Prefixes, Average of Pairs, Workers
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Chef and Difficult Contests, Chef and Happiness
December Lunchtime 2018 Division 2
Print Pattern, Choosing from Buckets, Age Calculator
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Art of Balance
Bangladesh