April Challenge 2014
Farmer Feb, Shortest Path in Binary Trees
June Challenge 2014
Chef and Subarray, Guessing Game
November Challenge 2014
Distinct Characters Subsequence
January Challenge 2015
Sereja and Number Division 2, Chef and Stones, Sereja and Votes, Gcd Queries
February Challenge 2015
Chef and Equality, Chef and Strange Formula, Chef and Chain, Let us play with rank list
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
June Challenge 2015
Chef and His Friend, Chef and Memory Limit, Chef and Polygons
July Challenge 2015
Bread, Chef and Cube, Na2a and lucky stone
April Cook-Off 2015
Equality, Version Control System
July Cook-Off 2015
Cops and the Thief Devu, Maximize Disjoint Pair Sum
India