March Challenge 2016
maximize the sum, Palindromic substrings
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And The Hiring Event, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
December Challenge 2016
Train Partner, Our Base is Under Attack
August Challenge 2018 Division 2
Problem Sort, Sheokand and Number, Spell Bob
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining
India