My program passed the tests I could find but got WA#6.
Please, give me a hint what the test #6 is!!

My #6 was TLE.I don't know the reason too.

I also had WA#6, but i understood problem very fast. If you use DP, you should save results for every vertex in the array, and return this value if there is the same query in the future. This is full DP and it works fast.

Me too,
i tried many tests but still DON'T KNOW WHY......

Edited by author 28.05.2009 14:26