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 mission