Discussion @ 1464. Light @ Timus Online Judge

Online Judge	Problems	Authors	Online contests
About Online Judge Frequently asked questions Site news Webboard Links	Problem set Submit solution Judge status Guide	Register Update your info Authors ranklist	Current contest Scheduled contests Past contests Rules

Discussion of Problem 1464. Light

help me

Posted by Semenoff 27 Sep 2006 10:37

please write me a solution.....how to decide this problem.