A school has 40 teachers, 1 principal and 2 vice principals. The principal calls all the faculty and staff to hold an emergency meeting. If one person is notified every minute, how many minutes will it take to notify everyone.
一所学校有教师40人，校长1人，副校长2人．校长用电话通知全体教职工召开紧急会议，若每分钟通知1人，最少花多少分钟可通知到每一个人．
<result>6</result>