How many movies have Aleksandr Zatsepin and Leonid Gaidai collaborated on?

They have worked on 12 movies together! Their first movie together was Sovershenno seryozno (1961) while their highest rated movie together was Ivan Vasilyevich Changes His Profession (1973). They have not worked together since There's Good Weather in Deribasovskaya, Or It's Raining Again in Brighton Beach (1993). They are most known for their comedy films together.