OJ Board

why "north" should 2x ?
isn't just
north
south
will work ?

thanks 4 the help, I just make a little stupid fault :oops:
I use mod calculation to determine how much one should take money for himself, so I give "if the modulo not zero", but I forgot to write the "else" code. After I read this message board, I realize that matter, but again... I write it wrong ...

I think that because nahid and noim have 9 and 10 in the first time. after giving events, they have still 9 and 10, so 9-9=0 and 10-10=0

anyway, my program still WA after this modification, why
anyone have a tricky test case ?

mine is BFS, I'm using linked list to store information before processing, but I got memory limit :(

I've tried to count how many times I allocating memory and how many times I deallocating it, and they are the same.

the program runs very slow too, I just store the path, so I need to calculate ...