February Challenge 2014
Longest Common Pattern, Little Elephant and Subarrays, Make Him Happy
March Challenge 2014
Team Split, Walk, Little Chef and Numbers
September Challenge 2014
Chef and Rainbow Array - 2, Chef and Swaps, Chef and Left-Right, Fun with Rotation
October Challenge 2014
Remy paints the fence, DevuLand, Dinosaurs and Laddus, Magical Girl and Colored Liquid Potions, Chef and Square, Chef and Ground
November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence, Chef and Red Black Tree, Let us construct palindrome
October Lunchtime 2014
Cascading Style Sheets, Physics Class, Tanu and Head-bob
January Challenge 2015
Queries on the String, Chef and A Large Permutation, Chef and Stones, Sereja and Votes, One Dimensional Kingdoms, Gcd Queries
February Challenge 2015
Chef and Equality, Let us play with rank list, Chef and Strings, Chef and Chain
April Challenge 2015
Chef and Array, Inversion sorting
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres
May Lunchtime 2015
Devu and Grapes, Devu and Manhattan Distance
Kazakhstan