November Challenge 2016
Gift and Chef, Chef and squares, Task for Alexey, Count Permutations
December Challenge 2016
Train Partner, Kirito in labyrinth, Our Base is Under Attack
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
March Challenge 2017
Bear and Extra Number, Bandwidth of a matrix, Xenny and Alternating Tasks, Cooking Schedule
April Challenge 2017
Chef and Divisor Tree, Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes
May Challenge 2017
Median of adjacent maximum numbers, Chef and Subsequences, Blocked websites, Chef and his daily routine, Chef and Sub Array , Courses in an university
June Challenge 2017
Chef and Prime Queries, A Good Set, Cloning, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
November Challenge 2017
Periodic Palindrome Construction, Villages and Tribes, Chef goes Left Right Left, Chef and Subarray Queries, Chef Hates Palindromes
March Challenge 2018 DIV 1
Pishty and Triangles, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting
September Challenge 2018 Division 1
AND Square Subsegments, Sasha and Photos, Table Game, Bad Shuffle
India