GPL 69

Finally 69th edition of GPL is going to be organised in Gokuldham society. But they forgot to take permission from Inspector Chalu Pandey. As you he is a strict cop and shouts every time his famous dialogue. But this time he decided to ask a problem to Bhide to grant him the permission. The problem goes like this- A $M$ x $N$ black and white chessboard is given with $(1,1)$ being white and so on.