Andrei Florea and Alexandru Olaru (the directors) have two cameos in the movie: one in the opening scene in the café when they meet the two guys playing pool, and the other one in the running scene on the street when the kleptomaniac girl bumps into them and falls on the sidewalk.
Alina Marin (the kleptomaniac girl) actually fell on the ground in the running scene. She tripped when she bumped into the guys on the sidewalk. The directors chose to keep that take, but they continued shooting the scene in another night because the actress was hurt.