January Challenge 2017
Cats and Dogs, Reservior, Capital Movement
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
April Challenge 2017
Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
August Long Challenge 2017
Greedy Candidates, Palindromic Game, Chef And Fibonacci Array, Chef and Rainbow Array, Chef and Mover
October Challenge 2017
Chef and a great voluntary Program, Chef and Cycled Cycles, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
December Cook-Off 2017
Football Match, Beautiful Array
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
April Challenge 2018 Division 1
Cutting Plants, Highway Crossing, Count Good Prefixes
Brazil