October Challenge 2015
Count Subarrays, Time measure, Who dares to be a millionaire
March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef and Array and K, Devu and an Array, Chef and Coins Game, Chef And Binary Operation, Chef And The Hiring Event
July Challenge 2016
Andrash and Stipendium, Chef and Tetris, Chefland and Electricity
October Challenge 2016
Chef and Three Dogs, Fenwick Iterations, Chef and Keyboard
November Challenge 2016
Count Permutations, Friends Meeting, Gift and Chef, Chef and squares, Task for Alexey
April Cook-Off 2016
Movie Weekend, Odd Divisors
June Lunchtime 2016
Collisions, One more weird game
February Cook-Off 2019 Division 1
Max Range Queries, Chef and Secret Password, Chef and Party
India