November Challenge 2017
Polynomials, Chef goes Left Right Left, Lovers Gift, Periodic Palindrome Construction, Villages and Tribes, Chef Hates Palindromes
December Challenge 2017
Chef and Universe, Total Diamonds, Chef And his Cake, Chef, Leonardo And Queries, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays
November Cook-Off 2017
Skiing, Random Pair, Online Chess
December Lunchtime 2017
Days in Month, Strange Function, Too Much Sweetness
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
January Cook-Off 2018
Multiple of 3, Make array great again, Survive in ChocoLand
