This is the third edition of Competitive Programming book. This is the A5 paperback version. This is the intended version for typical audience, i.e. young programmers of age 15-25. If you need a larger 8.25 * 10.75 inch version (about the size of A4, or 2 x A5), please go to: http://www.lulu.com/shop/steven-halim/competitive-programming-3-hardcover/hardcover/product-21031840.html. A much more detailed information about this book is available at: https://cpbook.net. This CP3 has been superseded by the newer CP4 that is now split into two books: https://www.lulu.com/en/gb/shop/suhendry-effendy-and-felix-halim-and-steven-halim/competitive-programming-4-book-1/paperback/product-1q2pjn4n.html and https://www.lulu.com/en/gb/shop/suhendry-effendy-and-felix-halim-and-steven-halim/competitive-programming-4-book-2/paperback/product-5j9e26.html