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| back to board | What is about it? (+)  A lot of people during the first 2.5 hours got WA on this problem(Me too). But then a lot of them solved it! Maybe some tricky test?
 If so please tell me.
 
 Thanks in Advance.
where is it source?!!!!!!!!!!!!! i know 1233-1240 but what about this?!Hey hey is it a contest right now? how many hours left? >No. Contest is over. Problems 1241-1248 are today's contest problems A-G respectivly. Check problemset. > >Oh, I found my mistake, sorry (-) | 
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