有3个传教士和3个野人要过河，现在有一条船只能承载2个人（包括野人），在任何时刻，如果有野人和传教士在一起，必须要求传教士的人数多于或等于野人的人数。 -There are three missionaries and three savages to cross the river, and now a vessel can carry two people (including savages), at any moment, if there are savages and missionaries together, the number of missionaries must be required more than or equal to savage The number of people.