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[求助]这个能否用c程序解决?

热度:276   发布时间:2007-08-26 14:35:43.0
[求助]这个能否用c程序解决?

刚看到这个推理题不知道能否用c程序解决呢?
A teacher says: I'm thinking of two natural numbers bigger than 1. Try to guess what they are.

The first student knows their product(乘积) and the other one knows their sum.

First: I do not know the sum.

Second: I knew that. The sum is less than 14.

First: I knew that. However, now I know the numbers.

Second: And so do I.

What were the numbers?

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用穷举法也可以求吧,
从1到11里面求出所有任意两个(之和小于14的)数的可能乘积(并记录每个乘积的访问次数以及由那些数相乘而得),
从乘积列表里面找出访问次数为 1 的(我想应该只有一个吧)就是那个解。


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记得有个关于生日的题目,问法差不多
本论坛的老帖,和本帖不一样

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2,6


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