May Challenge 2020 Division 1
Triple Sort, Binary Land, Sorting Vases, Chef and Bitwise Product, Buying a New String
April Lunchtime 2020 Division 2
Dot Time, Triangle Query, Another Birthday Present!, Positive Mex, Chef in Fantasy League
May Lunchtime 2020 Division 1
Absolute Min Max, Tree difference, Convert the String, Escape One
June Challenge 2020 Division 1
The Tom and Jerry Game!, Operations on a Tuple
RECode 12.0 (Rated for all)
Chef and String, Chef and Walk, Chef and Rotation, Chef and Or, Chef and Numbers
Ukraine