同学们玩过拿石子游戏吗?让我们来玩一玩吧.一堆石子,你拿一把,我拿一把,总会拿光的.谁拿到最后的1颗,就算输.光这样规定行吗?先拿的人一下子拿很多,只剩下1颗,不就轻而易举地取胜了吗?那就规定,每次最多不能超过多少.比方说,每次最多拿8颗石子,再多了就不行.最少呢,总得拿1颗吧.如果允许不拿,那最后1颗谁也不肯拿了.两个人都想取胜,就要琢磨取胜的方法.石子多了头绪太多,先想象最简单的情形. Players have played the game of gravel? Let us play a play. A pile of stones, you get one, I get one, always get the light. Who got the last one, even lose. Light so Is it OK to get a lot of people first get a while, leaving only one, do not easily win it? It provides that each can not exceed the maximum number .For example, each time up to take eight stones, and then The more it will not work.At least, we must get a bar if you do not allow that last one who refused to take two people want to win, we should pondering the way to win the stone too much clue, First imagine the simplest situation.