OJ Board

Well, my opnion is not to make the AC of online contest WA, unless there is serious reasons. But I am not sure how the rejudge of online contest works. For 24-hour judge we try to let people know whether their solution is right or wrong. So if some solution is accepted on wrong judge data we must fi...

This problem still has wrong data. So don't try to solve it now in 24-hour judge.

May be it can be used how talents are scattered all over the world and produce a world map based on that

OK, now solved only in 0.01 sec. Are you also a member of Elite Problemsetters? Try to avoid Shahriar Manzoor, because he is the top of the leader of posting wrong problems. Hehe! I should not be replying this. When you post most number of problems, statistically you will make most mistakes. Most w...

To anonbd: I think you yourself know that what you are trying to do is not fair and that is why your handle is anonymousbd rather than your own one. Problem Setting is not paper writing, so copying idea is allowed. How many problems have you seen that uses Floyd's algorithm or tries to ask you to fi...

The time limits and data were prepared for faster server at WACO. Once the UVa is shifted to faster server this problem will no longer be there.

This contest is for practice. At UVa we hold a lot of old contest every year.

Holding a contest parallel is often difficult for us.

This problem is actually an edited version of : http://www.kalva.demon.co.uk/usa/usoln/usol951.html A MathOlympiad problem!! So the people who did practice for math olympiad problems could get it common!!! And i think, they just forgot to mention the Prime thing.. :wink: IMO: I belive that in a pro...

It is a tricky situation.

No correct verdict can be made incorrect after contest.

Given the situation I just wonder whether a rejudgement will be fair bcause no way the problem can be corrected.

This problem unfortunately had two mistakes. One it was not mentioned that p is a prime and another one the range was not specified. However, none of the mistakes are due to Derek Kisman or Abdullah al Mahmud. When derek wrote solutions n>2000000000 then the problem setter made it less than 20000000...

Hmm! This reminds me of my dream life: I will be jobless!! Still be paid and I will set problems all day and all night :). 7/8 months ago there were a lot of strikes in my country so I had a lot of holidays, now there is state of emergency so not much holidays. Everyone is liking this days (no strik...

And when you consider that along with those 2000 problems he also sets problems, deletes more spam threads everyday than he solves problems, that is amazing. And the life story of Joachim Wulff will sound like a fairy tale, I hope one day he will tell everyone .

Power brings corruption.

Thinking of misuse of admin power .

Although I have administrator privilage in the board I can delete only innocent posts. But don't have the permission to delete most of the spam posts. Can it be fixed?

Yes you are right. The mistake was mine. I changed the code to six decimal places to see if there is any case that can cause precision problem, found one such case (not really threatning) removed that case but forgot to change the code. We will rejudge asap. When I was checking at home unfortunately...