June Challenge 2014
Chef and Subarray, Guessing Game
November Challenge 2014
Distinct Characters Subsequence
April Challenge 2015
Chef and Interview, Broken Telephone
May Challenge 2015
Chef and new recipe, Set Difference , Chef and Prime Divisors
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
October Challenge 2015
Count Subarrays, Who dares to be a millionaire
May Cook-Off 2015
Devu and friendship testing
May Challenge 2017
Chef and his daily routine
Bangladesh