I am currently trying to solve Problem E Croc Champ 2013 Qualification Round, and there is strange thing happen:

My solution time out at test 30, but when I opened other's solutions, their solutions only have 27 tests, some have 28 tests, but none have more than 28 tests. Any body know why?

Update 1: try to copy and resubmit some accepted codes (sorry guys) and all of those solutions also time out at test 30 :(

Update 2: Finally get it accepted, thank you Mike for your help :)