December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem, Chef and Interactive XOR
November Challenge 2018 Division 2
Chef and Ridges, Chef and Difficult Contests, Chef and Happiness
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes
August Challenge 2019 Division 2
Dilemma, Football, Distribute Apples
December Challenge 2019 Division 2
Easy Subsequence Selection, Addition, That Is My Score!, Binary XOR, Plus Multiply
December Lunchtime 2019 Division 2
The Evil Professor, Stupid Machine, Check Algorithm
May Lunchtime 2020 Division 2
Weird Walk, Convert the String, Lost Weekends, Tree difference
July Challenge 2020 Division 1
Chefina and Swaps, Missing a Point, Doctor Chef
India