《训练指南》中的第二种算法,其实本质上就是个背包。d[i][j]表示,在子树的节点数最大为i的情况下,j个节点的解。当之前的i-1,i-2,....0的结果都已知的时候,d[i][j]自然可根据下式求解:
d[i][j]=sum{C(f(i)+p-1,p)*d[i-1][j-p*i] | p*i
其中f(i)表示恰好有i个节点的子树的数量。而C(f(i)+p-1,p)则表示有p棵i节点子树形成...
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Web程序 时间:
2015-02-23 16:45:39
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203
Problem Description There are many lamps in a line. All of themare off at first. A series of operations are carried out on these lamps. On thei-th operation, the lamps whose numbers are the multiple ...
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其他好文 时间:
2015-02-23 15:30:49
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150
OR MS Journal Ranking by SJR? ?1. Journal of Operations Management? 2. Management Science? 3. Omega? 4. Operations Research? 5. Transportation Research, Series B: Methodological? 6. Compute...
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其他好文 时间:
2015-02-21 17:46:37
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997
Total Accepted: 3790 Total Submissions: 21072All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T,for example: "ACGAATTCCG".Wh...
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其他好文 时间:
2015-02-19 12:54:56
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124
POJ 3233 Matrix Power Series (矩阵快速幂+二分)...
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其他好文 时间:
2015-02-18 21:03:21
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267
原题地址:https://oj.leetcode.com/problems/repeated-dna-sequences/题目内容:All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for ex...
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其他好文 时间:
2015-02-15 11:53:05
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232
Participation in the Active Directory Samba 3.0 series, as well as the OS since Windows 2000, is possible to participate in the Active Directory domai...
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其他好文 时间:
2015-02-13 00:18:36
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283
This series is compatible with Linux certification exam LPIC. A typical Linux user-level topics omitted, I am picked up the contents of the system man...
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数据库 时间:
2015-02-13 00:18:22
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260
Series 作为cartControl的基本单位来现实图表数据所以每一个Series代表一种需要显示的类型。首先实例化一个SeriesSeries _series = new Series("处理次数", ViewType.Bar);_series.ArgumentScaleType = Scal...
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其他好文 时间:
2015-02-12 20:05:48
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443
转自:http://onewebsql.com/blog/generics-extends-super以下基本够用了Today we continue our mini-series on Java Generics. In previous posts we have investigatedho...
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编程语言 时间:
2015-02-12 16:06:40
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196