October Challenge 2015
Count Subarrays, Who dares to be a millionaire, Rupsa and Equilateral Triangle, Time measure
March Challenge 2016
Palindromic substrings, maximize the sum
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
March Challenge 2017
Xenny and Alternating Tasks
April Challenge 2017
Similar Dishes, Bear and Row 01, Dish Of Life
January Lunchtime 2018
Chef and Game with Sequence
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Line
April Lunchtime 2018 Division 2
Two vs Ten, The hardest gcd problem
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves, Byte to Bit
May Lunchtime 2020 Division 2
Weird Walk, Lost Weekends
India