Very good problem, thanks to authors!

It took me almost a week to invent the easy solution.
Don't ask how, just think. My test



4 1
4
0.0 - 1.1
0.1 - 1.2
0.2 - 1.3
0.2 - 0.3
0 3

--
7

why the answer is "7" but not "no solution" ?

Try to draw labyrinth from my sample to inner level 3 and you see the path 0-3 exists.
Read the problem statement once more.

i can't understand it , there are only 1 inner house in your test , why should i draw labyrinth from your sample to inner level 3 ?

and i always wa at Test #6 , i don't know why .

Look at pictures 1 and 2 from problem statement. Every inner house is is copy of outer house and every inner house has its inner houses and etc...

Can someone who got AC please send me the solution to e-mail:
dexter92.mg AT gmail.com

I need exactly this problem to solve for my graduate work...
(I promise I will not use the solution to get AC here, that is not my goal at all :) I actually found this problem here on Timus accidentally :))

Edited by author 20.04.2011 00:17

See my previous post...
PLEASE PEOPLE can I get anyone's AC solution? I really need it for my graduate work...
Again, this is my e-mail: dexter92.mg@gmail.com ...
Can you please send your code???
Thank you.