September Challenge 2014
Chef and Rainbow Array - 2, Chef and Left-Right, Chef and sequence, Fun with Rotation
October Challenge 2014
Remy paints the fence, Chef and Ground, Chef and Square, Magical Girl and Colored Liquid Potions, DevuLand, Dinosaurs and Laddus
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree
December Challenge 2014
XOR with Subset, Chef and Apple Trees
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
June Challenge 2015
Steady tables, Chef and Memory Limit, Chef and Polygons
August Challenge 2015
Way Out, Chef and insomnia, Aditi and Magic Trick, Devu And Churu , Gravity Guy, Cooking Machine
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
January Long Challenge 2016
Chef and Time Machine, Devu and Perfume, Chef and Making Triples, Churu and Balls, Rupsa and the Game, Chef and Inflation
February Challenge 2016
Sereja and Two Lines, Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective
April Lunchtime 2016
Maximum K Sums, Coins And Triangle
August Challenge 2021 Division 1 (Unrated)
Special Triplets, Problem Difficulties, Olympics Ranking
Romania