专题文章
时长:00:00更新时间:2020-11-09 07:57:59
CodeforcesRound#254(Div.2)A.DZYLovesChessboard:DZY loves chessboard, and he enjoys playing with it. He has a chessboard of n rows and m columns. Some cells of the chessboard are bad, others are good. For every good cell, DZY wants to put a chessman on it. Each chessman is either white
查看详情