martial arts team has 30 members. There is an emergency training camp during the summer vacation. The coach needs to notify each team member as soon as possible. It takes one minute to notify one person. How long does it take to notify everyone?
一个武术队有30人，暑假期间有一个紧急集训，教练需要尽快通知到每一个队员，通知一个人需要一分钟，最少花多少时间就能通知到每个人？
<result>5</result>