"Hope School" has built a 4-story teaching building, with 6 classrooms on each floor, and there are 3 doors in and out of the building (two main doors and one side door of the same size). During the security inspection, the three doors were tested: when a main door and a side door are opened at the same time, 400 students can pass through within 2 minutes, and if a main door can pass 40 more students per minute than a side door. During the inspection, it was found that the efficiency of going out was reduced by 20% due to the crowding of students in emergency situations. Safety inspection regulations: In case of emergency, all students in the building should safely evacuate through these 3 doors within 5 minutes. Assuming that there are at most 50 students in each classroom in this teaching building, ask: Do the 3 doors constructed meet the safety regulations? Please explain by calculation.
某"希望学校"修建了一栋4层的教学大楼，每层楼有6间教室，进出这栋大楼共有3道门(两道大小相同的正门和一道侧门)．安全检查中，对这3道门进行了测试：当同时开启一道正门和一道侧门时，2分钟内可以通过400名学生，若一道正门平均每分钟比一道侧门可多通过40名学生．检查中发现，紧急情况时因学生拥挤，出门的效率降低20%．安全检查规定：在紧急情况下全大楼的学生应在5分钟内通过这3道门安全撤离．假设这栋教学大楼每间教室最多有50名学生，问：建造的这3道门是否符合安全规定？请通过计算说明．
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