August Challenge 2019 Division 2
Distribute Apples, Football
September Challenge 2019 Division 2
Chef and Interesting Subsequences , Chef and Good Subsequences
October Challenge 2019 Division 2
Array Modification, Operations on a Matrix, Phone Prices
December Challenge 2019 Division 2
Plus Multiply, Binary XOR, Easy Subsequence Selection, That Is My Score!, Addition
January Challenge 2020 Division 2
Doraemon, Breaking Bricks
February Challenge 2020 Division 2
The Theatre Problem, Hard Cash, School of Geometry, No Change Required
April Challenge 2020 Division 2
Strange Number, Squared Subsequences, Unit GCD, Sell All the Cars, COVID Pandemic and Long Queue
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
June Challenge 2020 Division 2
Chef and Price Control, Chef and String, Chef and Icecream, Even Matrix, The Tom and Jerry Game!
July Challenge 2020 Division 2
Ada King, Missing a Point, Chef and Card Game, Chef and Strings
December Challenge 2020 Division 2
Hail XOR, Even Pair Sum, Vaccine Production, Vaccine Distribution
March Challenge 2021 Division 3
College Life 4, No Time to Wait, Space Arrays, Paparazzi Gennady, Consecutive Adding, Chef and Groups, Dense Graph, Interesting XOR!
July Challenge 2021 Division 2 (Unrated)
XxOoRr, Chef vs Bharat, Optimal Denomination
August Challenge 2021 Division 2 (Unrated)
Special Triplets, Array Filling, Chef and Bulb Invention, Problem Difficulties, Olympics Ranking
India