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I missed that part also. Thanks!

Hint please.. I've tried DP of configurations, but always get TLE.

And also there're testcases with maximum capacity > 10...

I got tons of WA because of that, and then several TLE for checking which input constraint is violated.

Hi,

Can anyone explain what does J_{Gl}(S) mean in the paper linked?

Thanks

As title..

OK, thx, I think I got it

The keyword is telescoping.. hehe.. my math is poor..

Hi,

I've read that there's a closed formula for this problem.. and it shouldn't be too hard since there're many people solved it during the contest..

So.. any hint about the formula? I've thought about this problem for few days but no results..

For me, it seems that this problem is more difficult ...

LOL, yesterday I spent almost 2 hours on this problem until fell down asleep....

after knowing p is prime I can figure out the way in < 30 mins :S

??? So p is prime?

LOL.

Yes, it works, thanks

Hi, I am new with the new server. I am participating in the current online contest, but cannot find "submit" button.

I see submit button in the first page, but when I clicked, it shows another page with a choice of language and one form to paste code, but I cannot find any submit button...

so ...

Great!

Thx a lot. Hehe.. I still need to learn a lot to have such insight

Thx a lot!

Btw how do you get the 20 bound?

Can you share your idea?

I am thinking about using euler theorem, and try to create edges such that all vertices (except at most 2) have even degree, which can be done by dijkstra.

However, the number of vertices will be 2^n and the number of edges can be more than that, which I think is not ...

LOL.. yes, that makes me get WA.. now got ACC. Thanks.

Initially I just ignore multiple edges.. if you said X is parent of Y, then you said it again.. then it is no problem, right? :S

Thanks a million