8. (4 points) At an art school, there were painters and photographers. Some of them knew each other, while others did not. Each painter drew a pair portrait for every two of their acquaintances who were photographers. Each photographer took a photo of each of their acquaintances who were painters, in turn, together with each of their acquaintances who were photographers (naturally, except for themselves). What turned out to be more: paintings or photographs? By how many times?

Answer: Photographs are twice as many.
Solution: For each triplet of artist $A$ and two photographers $B$ and $C$, one can find a photo of $A$ and $C$ taken by $B$, a photo of $B$ and $A$ taken by $C$, and a portrait of $B$ and $C$ painted by $A$. This means that there are twice as many photos.