A performing arts center is a landmark building of a city. In case of large-scale activities, in addition to the safety entrances and exits normally used, the center also has five entrances and exits that are not open at ordinary times for emergency use. The use of these emergency entrances and exits needs to follow the following rules: (1) if No. 1 is enabled, No. 2 must be enabled and No. 5 must be closed at the same time (2) No. 3 and No. 4 (3) are not allowed to be closed at the same time No. 2 or No. 5 can be enabled only when No. 4 is closed.
also enabled?
No. 2 and No. 3