June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
Chef and Sign Sequences, Whats in the Name, Calculator , IPC Trainers
August Long Challenge 2017
Chef and Rainbow Array, Greedy Candidates
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
February Challenge 2018
Permutation and Palindrome, Car-pal Tunnel, Chef And His Characters, Chef And The Patents
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Line
March Challenge 2018 DIV 1
Chef and Easy Problem, Mix the Colors, Minions and Voting
December Challenge 2018 Division 1
(Challenge) Delete DAG, Max and Electrical Panel
February Challenge 2019 Division 1
Manhattan Rectangle, Chef and Secret Ingredients, Art of Balance
March Challenge 2019 Division 2
Chef got Recipes, Chef and a Beautiful Digit, Yet Again a Subarray Problem, Chef and Number Game
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples, Zombie and the Caves
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
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