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Ankur Sundara 2017-03-11 00:11:38 -06:00 committed by GitHub
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@ -2,10 +2,10 @@ Your librarian has a 2-row bookshelf that can contain N books in each row. She w
Input: the integer, N (1<=N<=2^1024) Input: the integer, N (1<=N<=2^1024)
Output: the number of ways you can place red-colored books and blue-colored books onto the bookshelf. Since this number might be really big, output it mod 10^9+7. Output: the number of ways you can place red-colored books and blue-colored books onto a N-column bookshelf. Since this number might be really big, output it mod 10^9+7.
Example: Example:
Input: 3 Input: 2
Your valid bookshelf layouts are: Your valid bookshelf layouts are:
``` ```