Successful solution for Longest Common Length problem - http://www.codechef.com/FEB14/problems/LCPESY
Successful solution for Little Elephant and Subarrays problem - http://www.codechef.com/FEB14/problems/SUBMIN
POSSIBLE solution for Make Him Happy problem - http://www.codechef.com/FEB14/problems/TWODOGS
Couldn't submit it.