Aha! Got it at last. The rules talked about _any_ pair on the same row, not the whole row as I perceived at first (I thought "two or more", and it was "any pair")
ср, 12 апр. 2017, 18:53 Paul Smith <p...@pollyandpaul.co.uk>: > "Whenever two models share a row or column, at least one of the two must > be a +." > Therefore, it is not possible to have two x's share a row, nor share a > column, that would violate this rule (neither of them are + if both are x). > It is also not possible for two o's to share a row or column, as this > would violate the same rule (neither of them are + if both are o). > It is still not possible for an o and an x to share a row or column, > because neither of these are + > > If two xs cannot share a row or column, and cannot share a row or column > with an o, I think you can see why these feel like rooks. > > On Wed, 12 Apr 2017 at 16:32 Alexander Lukyanov <lavv...@gmail.com> wrote: > > I must be missing something, but I don't understand how in the problem D > the rules are restated from > > Whenever any two models share a row or column, at least one of the two > must be a +. > Whenever any two models share a diagonal of the grid, at least one of > the two must be an x. > > to: > > The + models are bishops. Two bishops may not occupy the same diagonal. > The x models are rooks. Two rooks may not occupy the same row or > column. > The o pieces are queens. Two queens may not occupy the same row, > column, or diagonal. Moreover, a queen and a bishop may not occupy the same > diagonal; a queen and a rook may not occupy the same row or column. > > -- > > You received this message because you are subscribed to the Google Groups > "Google Code Jam" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to google-code+unsubscr...@googlegroups.com. > > > To post to this group, send email to google-code@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/google-code/2e67a7fb-95f9-4d85-9bd5-c48b5bebb758%40googlegroups.com > . > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "Google Code Jam" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/google-code/phx6ooyajkQ/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > google-code+unsubscr...@googlegroups.com. > To post to this group, send email to google-code@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/google-code/CAJej63%2BSubk9Z3PKr_kmxyzL6RGW%3DjcB8DituR8neFrdbBJtbA%40mail.gmail.com > <https://groups.google.com/d/msgid/google-code/CAJej63%2BSubk9Z3PKr_kmxyzL6RGW%3DjcB8DituR8neFrdbBJtbA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Google Code Jam" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-code+unsubscr...@googlegroups.com. To post to this group, send email to google-code@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-code/CANnoEwq88aU3_nf1jmPnevO4ZjFKJ%3DV6AaBDNZuXpQN2_gbESg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
