June Challenge 2016
Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
October Cook-Off 2016
Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, ChefWatson uses Social Network
January Lunchtime 2016
Exponential Sub-Palindromes, Triangle Classification
August Lunchtime 2016
Studying Alphabet, Lock-Free Stack
December Lunchtime 2016
Superheroes and villains, Fly height mode
February Challenge 2017
Eugene and big number, Interval Game, Chef and Triangles, Chef and His Apartment Dues
January Cook-Off 2017
Digit Longest Increasing Subsequences 2
February Lunchtime 2017
Bear and House Queries, Bear and Milky Cookies, Bear and Bribing Tree, Bear and Oveflow Points
Ukraine