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搜索关键字:卡特兰    ( 390个结果
hdoj-1130-How Many Trees?【卡特兰数】
How Many Trees? Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3224 Accepted Submission(s): 1870 Problem Description A binary search tree...
分类:其他好文   时间:2015-08-11 18:42:35    阅读次数:117
LA 5092 && hdu 3723 Delta Wave (卡特兰数)
题目:http://acm.hdu.edu.cn/showproblem.php?pid=3723 and http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=20568 题意:有种折线每向右延伸一个单位长度,高度要么不变,要么加1,要么减1。而且任何时刻高度不能低于0。求这种折线最终高度为0的情况总数。 分析:由于任何时刻斜...
分类:其他好文   时间:2015-08-10 00:24:09    阅读次数:217
UVa 10007 - Count the Trees(卡特兰数+阶乘+大数)
题目链接:UVa 10007题意:统计n个节点的二叉树的个数1个节点形成的二叉树的形状个数为:12个节点形成的二叉树的形状个数为:23个节点形成的二叉树的形状个数为:54个节点形成的二叉树的形状个数为:145个节点形成的二叉树的形状个数为:42把n个节点对号入座有n!种情况所以有n个节点的形成的二叉...
分类:其他好文   时间:2015-08-09 18:29:55    阅读次数:236
hunnu11562:The Triangle Division of the Convex Polygon(第n个卡特兰数取模)
Problem description   A convex polygon with n edges can be divided into several triangles by some non-intersect diagonals. We denote d(n) is the number of the different ways to divide the convex ...
分类:其他好文   时间:2015-08-08 23:00:19    阅读次数:179
bzoj1485
http://www.lydsy.com/JudgeOnline/problem.php?id=1485卡特兰数。把第1,3,...,2N-1个位置看做左括号,第2,4,...,2N个位置看成右括号。考虑从1到2N把数放进去,其实就变成了括号序列。所以是卡特兰数。求$\frac{C_{2n}^{n}...
分类:其他好文   时间:2015-08-07 21:46:36    阅读次数:122
hdoj-1023-Train Problem II【卡特兰数】
Train Problem II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 6852 Accepted Submission(s): 3708 Problem Description As we all know the ...
分类:其他好文   时间:2015-08-07 19:56:57    阅读次数:116
hdoj-1134-Game of Connections【卡特兰数】
Game of Connections Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3599 Accepted Submission(s): 2072 Problem Description This is a small ...
分类:其他好文   时间:2015-08-07 19:51:10    阅读次数:159
1023 Train Problem II(卡特兰数)
Problem DescriptionAs we all know the Train Problem I, the boss of the Ignatius Train Station want to know if all the trains come in strict-increasing...
分类:其他好文   时间:2015-08-05 18:08:30    阅读次数:148
卡特兰数
卡特兰数前几项为 : 1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796, 58786, 208012, 742900, 2674440, 9694845, 35357670, 129644790, 477638700, 1767263190, 65641...
分类:其他好文   时间:2015-08-05 14:27:39    阅读次数:150
Count the Trees 典型卡特兰数
Count the Trees题目分析:给你n个分别标为1,2,...,n的节点,问可以构成多少棵而叉树。分析:首先考虑n个节点是相同的。任选一个节点做跟节点,那么剩下的n-1个节点构成跟节点的左子树和又子数。h[n] = h[0]...
分类:其他好文   时间:2015-08-04 22:40:56    阅读次数:135
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