June Challenge 2017
Xenny and Coin Rankings, A Good Set
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
August Cook-Off 2017
Real obtuse, From heaven to earth
January Challenge 2018
Rectangle, String Merging, Maximum Score
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minion Chef and Bananas
May Cook-off 2018 Division 2
Best Cake Ever, Secret Recipe
May Challenge 2018 Division 2
Mighty Friend, Dibs on Fibs, Fake Binary Search, Minimum Deletions, Xor Again
December Challenge 2018 Division 2
Chef and Interactive Contests
July Cook-Off 2019 Division 2
Birthday Gift Again, Playing with Strings
October Challenge 2019 Division 2
Operations on a Matrix, Phone Prices
November Challenge 2019 Division 2
Weapon Value, Hard Sequence
March Challenge 2020 Division 2
XOR Engine, Ada Bishop 2, Pintu and Fruits
March Cook-Off 2020 Division 2
Mysterious Sequence, Find Your Gift, Box of Chocolates
April Cook-Off 2020 Division 2
Matrix Decomposition, Lift Requests, Simple Operations
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