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?

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。

2,6