Some organ holds worker autumn track and field sports meeting. It is known that all the staff who signed up for the sprint competition signed up for the shot put competition, all the staff who signed up for the long jump competition did not sign up for the shot put competition, all the staff who signed up for the high jump competition also signed up for the long jump competition, and the staff who did not sign up for the high jump competition did not sign up for the long-distance race.
Based on the above statement, which of the following can be concluded?
All the staff who entered for the short race did not enter for the long race