Thread: help plz...

Originally Posted by yiyayiyayo

You're very kind,and I really hope too much typing didn't trouble you. Though I want to say something,my poor English frustrated me, sorry.
In one word, your proof is wonderfull.Thank you.

It took me a quick time to type that, besides I had fun solving this problem. Where are you from?

I am from China and I'm a student studying in Senior Middle School.