January Challenge 2018
Maximum Score, Rectangle, K-Concatenation
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef
December Challenge 2019 Division 2
Plus Multiply, That Is My Score!
May Challenge 2020 Division 2
Triple Sort, Coronavirus Spread, Isolation Centers
September Challenge 2020 Division 2
A Problem on Sticks, Ada Matrix
September Lunchtime 2020 Division 2
GCD operations, Root the Tree, Watermelon
India