有三个牧师和三个野人过河，只有一条能装下两个人的船，在河的任何一方或者船上，如果野人的人数大于牧师的人数，那么牧师就会有危险. 找出一种安全的渡河方法-There are three priests and three Savage river, and only one person can hold the next two boats in the river, or any party on board, if the savage is greater than the number