December Challenge 2015
Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters, Chef and Girls, Chef and the stones
September Lunchtime 2015
Sum of palindromic numbers
December Lunchtime 2015
Ancient Berland Roads, Distinct Codes
February Lunchtime 2017
Bear and House Queries, Bear and Milky Cookies, Bear and Bribing Tree
July Challenge 2017
Chef and Sign Sequences, Two Coins, IPC Trainers, Calculator , Whats in the Name, Tree Expectancy, Pishty and tree
June Cook-Off 2017
Ada and crayons, Knight Covering, SnackUp, Centeroid
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
January Lunchtime 2018
Chef and Game with Sequence, Chef and Escaping from the Labyrinth
Bangladesh