April Challenge 2014
Farmer Feb, Counting Matrices, Shortest Path in Binary Trees, Chef and Digits, Divide the Tangerine
February Challenge 2015
Chef and Chain, Time to Study Graphs with Chef, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Interview, Chef and Piano Scales, Inversion sorting, Broken Telephone, Chef and Array, Count Sequences
November Challenge 2015
Receipt Recovery, Eugene and function, Simple Sum, Chef and cakes
December Challenge 2015
Chef and Filters, Plane Division, Chef and the stones, Oracle Devu and Longest Common Subsequence
March Cook-Off 2015
How to Minimize a String, How to Write a Message, How to Repaint a Fence
February Lunchtime 2015
Lucky Four, Heavy-light Decompositions, The Warehouse, The First Cube
February Challenge 2016
Chef and Strange Operations, Chef-Detective, Devu and a light discussion, Sereja and Two Lines
March Challenge 2016
Palindromic substrings, maximize the sum, Parity tree, Chef And Special Dishes
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
United States