April Challenge 2020 Division 2
Squared Subsequences, Unit GCD, Sell All the Cars, COVID Pandemic and Long Queue, Strange Number
May Challenge 2020 Division 2
Buying a New String, Triple Sort, Coronavirus Spread, Isolation Centers
June Challenge 2020 Division 2
Even Matrix, Chef and Price Control, Chef and String, Chef and Icecream, The Tom and Jerry Game!
July Challenge 2020 Division 2
Ada King, Missing a Point, Chef and Card Game, Chef and Strings
