Ten persons are living in a ten-storey building in which the topmost floor is numbered ten and the bottommost floor is numbered one.

Five persons live between P and W. Two persons live between Q and W. Three persons live between Q and U. X lives immediately above P. P and U does not live on consecutive floors. V lives immediately above Y. Three persons live between S and Y. T lives below R. Not more than two persons live between T and V.