February 2012 Challenge
Lucky Count, Lucky Long, Word Couting, Count of Maximum
April Challenge 2012
Parallel Computing, Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight, Similar Graphs
June Challenge 2012
Closest Points, Arranging Cup-cakes, Little Elephant and Candies
August Challenge 2012
Little Elephant and Bombs, Delivery Boy
October Challenge 2012
Fierce Battles, Event Organizer, The New Scheme
