There is a tourist group of 93 people, including 47 men and 46 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 the tour group live in different rooms, and each room is filled with the original number of people in the tour group. How many rooms did the waiter use at least?
有一个93人的旅游团，其中男47人，女46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，而且每个房间都按原定人数注满了旅游团的人，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">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<result>11</result>