September Challenge 2017
Minimum Good Permutation, Chef and Pick Digit, Little Chef and Sums
December Challenge 2017
Total Diamonds, Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
January Cook-Off 2018
Survive in ChocoLand, Multiple of 3
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
February Cook-Off 2018
Chef and Cook-Off, Chef and Line
March Challenge 2018 DIV 2
Mix the Colors, Chef and Glove, A Big Sale
March Cook-off 2018 Division 2
Chef Restores a Matrix, Chef Judges a Competition
April Challenge 2018 Division 2
Weight of Numbers, Highway Crossing, Count Good Prefixes, Average of Pairs, Workers
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