November Challenge 2016
Chef and squares, Count Permutations, Task for Alexey
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
March Challenge 2017
Xenny and Alternating Tasks, Bandwidth of a matrix
January Cook-Off 2017
Digit Longest Increasing Subsequences 2
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Median of adjacent maximum numbers, Courses in an university, Chef and Sub Array , Chef and his daily routine
June Challenge 2017
A Good Set, Xenny and Coin Rankings
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
October Challenge 2017
A Balanced Contest, Max Mex
December Challenge 2017
Total Diamonds, Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays
December Lunchtime 2017
Days in Month, Strange Function
India