July Challenge 2019 Division 2
Guess the Prime!, Parity Again, Codechef War, Circular Merging, (Challenge) Codechef War II, Minimum and Maximum, Chef and Mean , Hit the Coconuts
July Lunchtime 2019 Division 2
Swapping, Two-lane Road, Easy Math, Delete a Subarray
August Challenge 2019 Division 1
Guddu and his Mother, Encoding, Dilemma, Maximize an Expression, Chef and Gordon Ramsay
April Challenge 2020 Division 1
Strange Number, Squared Subsequences
June Challenge 2020 Division 1
The Tom and Jerry Game!, Operations on a Tuple, Convenient Airports, Guessing Game
Poland