April Long Contest
Rectangles Counting, Number Game Revisited
June Long Contest 2011
Maximal Score Path, Chef Teams
June Cook-off
Correctness of Knight Move, Super-plane
July 2011 Long Contest
Wireless Network, Large Kitchen, A-E Hash Function, Most Popular Friend
February 2012 Challenge
Word Couting, Count of Maximum
March 2012 Challenge
Spoon in Matrix, Home Delivery, Longest Weird Subsequence, Free Shuttle Service
April Challenge 2012
Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight
July Challenge 2012
The Gray-Similar Code, Restaurant Rating, Gift Rift, My Fair Coins, Chef's Dream
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Splitting Candies
November Lunchtime 2014
A wolf, a sheep and cabbage, Deja Vu, Yet another substring problem
