August Cook-Off 2015
Chef and the Wildcard Matching
September Lunchtime 2015
Sum of palindromic numbers
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Chef and Ballons, Chef And Magical Path, Chef And Coloring
March Cook-Off 2016
Alternating subarray prefix, Digital clock
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
March Lunchtime 2018 Division 2 (Unrated)
Chef and Friends, Magic Elements
India