How to install syntax highlighter on wordpress?

I want to integrate Syntax Highlighter on my wordpress blog. I've searched over internet for it but haven't got the answer.

I tried to link the sytax highlighter by switching the blog writing mode to html from visual but still it's not working.

There are answers which says that this can't be done on free wordpress blog but recently i visited this blog :

http://ift.tt/1YwM4yb

This blog have accomplished this task. I want to know how this is possible.

via Chebli Mohamed