摘要：
题目传送：http://acm.hdu.edu.cn/showproblem.php?pid=4704 Problem Description Sample Input 2 2 Sample Output 2 Hint 1. For N = 2, S(1) = S(2) = 1. 2. The in 阅读全文
posted @ 2017-06-30 10:39
Annetree
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