Thanks for encouraging words, I was not able to solve D (no time left - I started 2.5 hours before dead-line, and did not exercise before), but got 60 points for other 3, enough for 1st round.
Re:Google Code Jam 2012
by prezjordan on Sunday April 15, 2012 @02:30PM
(#3844273)
Nice job, same boat as me. I'm excited to see Google's write-up of D. Good luck in Round 1!
Ray-tracing seems reasonable, and not a lot of code.
where did you find that 20 points to qualify?
That being said, #4 is the only one that tripped me up - I'm think the solution is very simple and elegant but all I can think in my head is something along the lines of ray-tracing. Back to the drawing board!