Formated my mackbook, how to reinstall OS X?

Hi!
I was going to install Windows in BootCamp, but in some way i managed to formate my whole OS X disk. Now when I try to boot up my MacBook, it only shows a folder sign with a question mark inside of it. I've tried to boot it up from a USB stick by pressing the Option tab while startup, but nothing happens... Anyone who can help me with this?

Boot to the Recovery Volume (command - R on a restart or hold down the option key during a restart and select Recovery Volume). Run Disk Utility Verify/Repair and Repair Permissions until you get no errors.  Then re-install the OS.
OS X Recovery
OS X Recovery (2)

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