March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
October Challenge 2016
Chef and Keyboard, Chef and Three Dogs, Fenwick Iterations
November Challenge 2016
Chef and squares, Task for Alexey
March Cook-Off 2016
Digital clock, Alternating subarray prefix
January Challenge 2017
Reservior, Capital Movement, Cats and Dogs
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander, Alice and her garden
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
April Challenge 2017
Dish Of Life, Similar Dishes, Bear and Row 01
July Challenge 2017
Chef and Sign Sequences, Whats in the Name, Calculator , IPC Trainers
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Chef and Difficult Contests, Chef and Happiness
India