There is a tourist group of 95 people, including 47 men and 48 women, who live in a hotel. There are three types of rooms for 11 people, 7 people, and 4 people in the hotel. After the arrangement of the waiter, the men and women of this tour group live in different rooms, and each room is full of members of the tour group according to the original number of people. And there are people living in every room. How many rooms did the waiter use at least?
有一个95人的旅游团，其中男47人，女48人，住到一个旅馆里．旅馆里有住11人、7人、4人的三种房间，经过服务员的安排，这个旅游团的男女分住在不同的房间里，每个房间都按原定人数住满了旅游团的成员而且每种房间都有人住．服务员最少动用了多少个房间．
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<result>10</result>