(a) which is fenced or otherwise enclosed in a manner designed to exclude intruders; or
(b) where the building is utilized as an elementary or secondary school or a children's overnight camp as defined in section one thousand three hundred ninety-two of the public health law or a summer day camp as defined in section one thousand three hundred ninety-two of the public health law in violation of conspicuously posted rules or regulations governing entry and use thereof; or
(c) located within a city with a population in excess of one million and where the building or real property is utilized as an elementary or secondary school in violation of a personally communicated request to leave the premises from a principal, custodian or other person in charge thereof; or
(d) located outside of a city with a population in excess of one million and where the building or real property is utilized as an elementary or secondary school in violation of a personally communicated request to leave the premises from a principal, custodian, school board member or trustee, or other person in charge thereof; or
(e) where the building is used as a public housing project in violation of conspicuously posted rules or regulations governing entry and use thereof; or
(f) where a building is used as a public housing project in violation of a personally communicated request to leave the premises from a housing police officer or other person in charge thereof; or
(g) where the property consists of a right-of-way or yard of a railroad or rapid transit railroad which has been designated and conspicuously posted as a no-trespass railroad zone. Criminal trespass in the third degree is a class B misdemeanor.