October Challenge 2017
A Balanced Contest, Max Mex
May Challenge 2018 Division 2
S-T Mincut, Mighty Friend, Change the Signs, Minimum Deletions, Xor Again, Fake Binary Search, Dibs on Fibs
October Challenge 2018 Division 2
Chef and Circles, Byte to Bit, Chef and Serves, Coprime Components, Minimize Digitsum, Beautiful Bricks, Appy and Balloons , Chef and Surprise Chessboard
August Challenge 2019 Division 2
Distribute Apples, Zombie and the Caves, Football, Maximize an Expression, Dilemma, Encoding, Guddu and his Mother
September Challenge 2019 Division 2
Chef and Good Subsequences, Easy Fibonacci, Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Doofish Set, Chef Designed a Network, Chef and Interesting Subsequences
