Add correct output for lab 1

[Yradex]

I've noticed issue #1, but it seems a long term job and currently hasn't started yet. I'm wondering whether we could add the final output for lab 1 to our guidebook first, for it's the first lab, and students asked for it a lot in class.

Btw In part 3.2.2 there's a single line of code too long to show completely.

[liukangxu]

I'm working on it