码迷,mamicode.com
首页 >  
搜索关键字:beads    ( 137个结果
USACO 1.1.4 beads O(n)的两种算法
Algorithms one:类似动归的递推。。(还是类似递推的动归^(* ̄(oo) ̄)^算了这不重要) Algorithms two:不贴代码了,上路径~http://www.nocow.cn/index.php/USACO/beads思路一后面 核心思想:{事实上不必使用动态规划,直接搜索亦可达 ...
分类:编程语言   时间:2016-04-17 20:37:03    阅读次数:211
poj 1286 Necklace of Beads
Necklace of Beads 题意:用三种颜色给长度为n(n < 24)的环状手镯涂色,若能通过旋转或翻转得到则表示为同一种,问不同种涂色方案为多少? 思路:纯粹的等价类计算问题; 重点:对旋转和翻转转化为置换操作; 旋转:对间隔的长度进行枚举,即0 <= i < n;这样循环节就为n/gcd
分类:其他好文   时间:2016-02-28 19:46:28    阅读次数:213
1092. To Buy or Not to Buy (20)
Eva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of b
分类:其他好文   时间:2016-02-23 20:38:37    阅读次数:238
1.1.4 Broken Necklace
You have a necklace of N red, white, or blue beads (3 2 #include 3 #include 4 #include 5 #define maxn 1111 6 using namespace std; 7 int c; 8 char s...
分类:其他好文   时间:2016-01-23 18:28:50    阅读次数:135
1092. To Buy or Not to Buy (20)
Eva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of b...
分类:其他好文   时间:2015-12-06 12:53:54    阅读次数:161
poj 1286 Necklace of Beads (polya(旋转+翻转)+模板)
DescriptionBeads of red, blue or green colors are connected together into a circular necklace of n beads ( n 2 #include 3 #include 4 #include 5 #incl....
分类:其他好文   时间:2015-09-01 19:42:03    阅读次数:264
USACO 1.1 Broken Necklace
Broken NecklaceYou have a necklace of N red, white, or blue beads (3#include using namespace std;const int maxn=355;int N;char beads[maxn];int calcula...
分类:其他好文   时间:2015-08-29 06:07:57    阅读次数:191
poj1092. To Buy or Not to Buy (20)
1092. To Buy or Not to Buy (20)时间限制100 ms内存限制65536 kB代码长度限制16000 B判题程序Standard作者CHEN, YueEva would like to make a string of beads with her favorite co...
分类:其他好文   时间:2015-08-27 07:04:54    阅读次数:145
POJ1286 Necklace of Beads【Polya定理】
题目大意: 给定3种颜色的珠子,每种颜色珠子的个数均不限,将这些珠子做成长度为N的项链。 问能做成多少种不重复的项链,最后的结果不会超过int类型数据的表示范围。并且两 条项链相同,当且仅当两条项链通过旋转或是翻转后能重合在一起,且对应珠子的颜 色相同。 解题思路: 这道题和POJ2409是一样的题目,只不过这道题规定了颜色数目。 Polya定理的应用。先来看Polya定理。 Polya定理:设 G = {a1,a2,…,ag}是 N 个对象的置换群,用 M 种颜色给这 N 个 对象着色,则不同的着色 方...
分类:其他好文   时间:2015-08-20 21:00:36    阅读次数:308
BZOJ2081 : [Poi2010]Beads
暴力枚举$k$,对于一个子串,计算它正着的hash值以及反着的hash值,取最小值得到其最终hash值。对于$k$,一共有$\lfloor\frac{n}{k}\rfloor$个子串,计算出它们的最终hash值即可统计出不同子串的个数。时间复杂度$O(n\log n)$。#includetypede...
分类:其他好文   时间:2015-08-05 06:30:26    阅读次数:156
137条   上一页 1 ... 8 9 10 11 12 ... 14 下一页
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!