The t-shirt of the official Google I / O 2012 hides a cute puzzle

The Google I / O 2012 is almost upon us and for all its participants, the Mountain View giant wanted to deploy a special T-shirt that hides a pleasant surprise in the form of strings of code.

In the photo above you can see the front of the shirt that depicts the same symbols on the official site Google Developers and the puzzle is printed on the back.

 

By entering the code in the page of Input / Output reserved for the Google I / O 2012 is available at this address via the button at the bottom right " </> "the riddle that you clearly do not reveal.  by