This is the third edition of Competitive Programming book.
This is the larger version with hard cover. It is heavier and 10 USD more expensive. If you are looking for the lighter and cheaper A5 paperback version, please go to: http://www.lulu.com/shop/steven-halim/competitive-programming-3/paperback/product-21031836.html
A much more detailed information about this book is available at: https://sites.google.com/site/stevenhalim/
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