An organ holds an autumn track and field meeting for staff and workers  It is known that all the workers who signed up for the sprint competition signed up for the shot put competition, all the workers who signed up for the long jump competition did not sign up for the shot put competition, and the staff and workers who signed up for the high jump competition also signed up for the long jump competition
The staff and workers who did not sign up for the high jump competition also did not sign up for the long-distance running competition
All the workers who signed up for the sprint race did not sign up for the long-distance race.