Will my MacbookPro still be under warranty if i format and reinstall mountain lion from scratch?

Hello everyone,
as in title, will my MacbookPro still be under warranty if i format and reinstall mountain lion from scratch? After the release of mountain lion, bought it and reinstalled it on the previous version,but the system looks slightly slower.So my thought was to format and install it from scratch.But being my computer 1 month old,will this influence my warranty?Thank you for answers.Cheers.M

Reinstall doesn't broke the warranty, so you can reinstall OS X Mountain Lion

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