NISHIO Hirokazu[Translate]
二部グラフ判定
DFSで塗り分けて矛盾が起きなければOK

辺u,vについて「uが赤ならその時に限りvは青」のiff関係が成り立つのでUnionFindで充足判定ができる

"Engineer's way of creating knowledge" the English version of my book is now available on [Engineer's way of creating knowledge]

(C)NISHIO Hirokazu / Converted from [Scrapbox] at [Edit]