The one with Phoebe and Mikes apartment

The one with Phoebe and Mike’s apartment Since Phoebe and Mike has decided to get married and they have started to plan for it, now currently the problem that they are facing is they can’t come up with the apartment that satisfies both. Newly built residential block is rectangular in shape with N buildings in each of the M rows, each row contains buildings of same height i.e. number of floors i