September Challenge 2017
Chef and Pick Digit, Sereja and Commands, Little Chef and Sums, Fill The Matrix, Minimum Good Permutation
October Challenge 2017
Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Counter Test For CHEFSUM, (Challenge) Connecting computers
November Challenge 2017
Chef and Subarray Queries
December Challenge 2017
Chef and Universe, Santa Delivering Problem, Chef And Easy Xor Queries
September Cook-Off 2017
Statistics Construction, Subsequence Equality
November Cook-Off 2017
Random Pair, Online Chess, Skiing
September Challenge 2018 Division 2
AND Square Subsegments, Sasha and Photos, Magician versus Chef, War of XORs, Chef and Adventures, Bad Shuffle
SnackDown 2021 - Online Qualifiers
Lucky Number, Maximum Number Of Distinct Elements
