June Challenge 2017
Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets, A Good Set
July Challenge 2017
Chef and Sign Sequences, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover
September Challenge 2017
Sereja and Functions (Challenge)
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
January Challenge 2018
K-Concatenation, String Merging
April Challenge 2018 Division 2
Chef and Array (Challenge)
April Challenge 2020 Division 2
Strange Number, Squared Subsequences
May Cook-Off 2020 Division 2
Chef and Recipe, Chef, Chefina and Their Friendship
