思考题难度太大了，我不会解答。

These taxing questions are too difficult for me to answer.

回答此问题，并编写算法求解思考题。

Answer this question, and write an algorithm for the follow-up general case.

我把三科作业写好后便开始做思考题，但是这道题像一只只“拦路虎”一样把我的思维牢牢围住，不让我有一点解开的余地。

Began to do after I write the educational work to consider, but the problem is like an "obstacle" firmly in my mind, don't let me have a little loose.