You lived in a very old house, and you were often afraid to walk alone, because in the evening there were drunks and drug addicts sitting on the staircases. One of the late evenings, you still had to go there. You were walking quietly and carefully, when suddenly you saw a man lying on the stairs, with syringes and white powder lying next to him. He was lying in such a way that it was impossible to pass through the stairs. What will you do?