December Challenge 2018 Division 2
Max and Electrical Panel, Chef and An Ideal Problem, Chef and Interactive XOR, Chef and Interactive Contests
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes
April Challenge 2019 Division 2
Subtree Removal, Fencing, Maximum Remaining, Friend or Girlfriend
April Cook-Off 2019 Division 2
Making a Meal, Chef Learning Hungarian Algorithm
August Challenge 2019 Division 2
Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Chef and Interesting Subsequences , Chef Designed a Network, Fuzzy Linear Combinations, Easy Fibonacci, Chef and Good Subsequences, Biladerim Icin
September Lunchtime 2019 Division 1
All Substrings, Find the Sum
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification
November Challenge 2019 Division 1
Physical Exercise, From Zero to Infinity
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, Sticky Notes, Addition
January Challenge 2020 Division 1
Chef and Dynamo, Chefina and Prefix Suffix Sums, Doraemon
March Challenge 2020 Division 2
XOR Engine, Ada Bishop 2, Pintu and Fruits
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Ready Bitwise, Unit GCD, Sell All the Cars, Leaked Answers (Challenge), COVID Pandemic and Long Queue
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