November Challenge 2014
Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome, The Spelling Problem, Chef and Segment Game
January Challenge 2015
Queries on the String, Sereja and Number Division 2, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
February Challenge 2015
Chef and Complex String Coverage, Chef and Equality, Let us play with rank list, Chef and Chain
July Challenge 2015
Bread, MasterChef, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Way Out, Gravity Guy, Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Cracking the Code, Lighthouses, Chain of Doughnuts, Count Steps in Matrix
July Cook-Off 2015
Cops and the Thief Devu, Maximize Disjoint Pair Sum
January Challenge 2021 Division 2
Watching CPL, Fair Elections
Byterace IIT Patna Division 2 (Rated)
Angry Cyborg, The Begining Era Of Cyberverse, Cybalphabit, Batteries Needed!
March Cook-Off 2021 Division 2
Guess the Number, Matrix XOR, Consecutive Deletions
February Lunchtime 2021 Division 2
Average Sorting, Sed Max, Palpal Strings, Coprime Range
March Challenge 2021 Division 2
Interesting XOR!, College Life 4, Space Arrays
March Lunchtime 2021 Division 2
Dinner by Candlelight, Racing, Uniform, Lunchtime
April Cook-Off 2021 Division 2
Tree Distances, OR of ANDs, Chocolate Monger
Poland