October Challenge 2015
Who dares to be a millionaire, Count Subarrays
March Challenge 2016
maximize the sum, Palindromic substrings
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
September Challenge 2016
Chef and calculation, Faded Palindromes, Chef and digits of a number
October Challenge 2016
Sereja and Progressions, Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
November Challenge 2016
Count Permutations, Chef and squares, Task for Alexey
July Cook-Off 2016
Chef and Numbers, Chef and Proportion
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bandwidth of a matrix, (CH) Bear and Sorted Rows, Bear and Extra Number
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
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