2015年12月23日
hdu 1133 Buy the Ticket（Catalan）
摘要： Buy the Ticket Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5651 Accepted Submission(s): 2357 阅读全文
posted @ 2015-12-23 21:58 Przz 阅读(211) 评论(0) 推荐(0) 编辑
hdu 1130 How Many Trees?（Catalan数）
摘要： How Many Trees? Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3317 Accepted Submission(s): 192 阅读全文
posted @ 2015-12-23 20:19 Przz 阅读(141) 评论(0) 推荐(0) 编辑
Catalan数
摘要： Catalan数： f[n] = f[1]*f[n-1]+f[2]*f[n-2]+.............+f[n-1]*f[1]; 递推公式f(n)=((4*n-2)/(n+1))*f(n-1); 应用：Catalan习题 1.括号化问题 .Dyck word是一个有n个X和n个Y组成的字串，且 阅读全文
posted @ 2015-12-23 19:44 Przz 阅读(179) 评论(0) 推荐(0) 编辑
hdu 5573Binary Tree
摘要： Binary Tree Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 251 Accepted Submission(s): 143 Spec 阅读全文
posted @ 2015-12-23 18:45 Przz 阅读(152) 评论(0) 推荐(0) 编辑
hdu 5583 Kingdom of Black and White
摘要： Kingdom of Black and White Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 585 Accepted Submissi 阅读全文
posted @ 2015-12-23 18:39 Przz 阅读(161) 评论(0) 推荐(0) 编辑