How many movies have Ján Roháč and Vladimír Dvořák collaborated on?

They have worked on 5 movies together! Their first movie together was Žárlivost (1962) while their highest rated movie together was Silvestr 1978 (1978). They have not worked together since Hle Praha, pane Pařížane! (1980). They are most known for their comedy films together.