September Challenge 2017
Minimum Good Permutation, Chef and Pick Digit, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Penalty Shoot-out, Chef and Hamming Distance of arrays, Chef And his Cake
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
September Cook-Off 2017
Statistics Construction, Subsequence Equality
October Cook-Off 2017
Chef and Employment Test, Chef and Weird Queries
December Cook-Off 2017
Beautiful Array, Football Match
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
String Merging, Partition the numbers, Rectangle, Maximum Score, K-Concatenation
March Cook-off 2018 Division 1
Chef Goes to the Cinema, Chef Restores a Matrix
April Challenge 2018 Division 1
Chef and Array (Challenge), Highway Crossing, Count Good Prefixes
May Challenge 2018 Division 1
Fake Binary Search, Dibs on Fibs
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