题目：设有n个传教士和m个野人来到河边，打算乘一只船从右岸到左岸去。该船的负载能力为两人。在任何时候，如果野人人数超过传教士人数，野人就会把传教士吃掉。他们怎样才能用这条船安全的把所有人都渡过河去? 输入m,n的数值，程序将返回操作过程-Title: with n and m of the missionaries came to a savage river, intended to take a boat to go from