有3个传教士和3个野人要过河，只有一艘船，这艘船每次只能载2个人过河，且无论哪边野人的数量大于传教士的数量时，野人就会吃掉传教士。怎样让他们都安全过河？-Three missionaries and three wild man to cross the river, only one ship, the ship can only set two individuals across the river, and regardless of which side of Savage s number is greater than the number of missionaries, the savages will eat out missionaries. How to make them safely across the river?