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CSU1633: Landline Telephone Network
Description The mayor of RMRCity wants to create a secure landline telephone network for emergency use in case of serious disasters when the city is cut off from the outside world. Some pairs of bu...
分类:Web程序   时间:2015-05-25 16:47:52    阅读次数:234
CSUOJ--1633 Landline Telephone Network
其实就是一道最小生成树的题目.我们只需要将坏点排除在外,然后对其它点做一次最小生成树,然后在将坏点连接到这颗生成树上(每次都选代价最小的点).当然如果最后不是所有的点都连接到一起,就是impossible了. 还有一种情况需要特判,就是如果一共只有两个点,并且都是坏点,这种情况也是合法的.代码如下:#include #include #include<algor...
分类:Web程序   时间:2015-05-25 10:12:19    阅读次数:169
CSU 1633: Landline Telephone Network (最小生成树)
1633: Landline Telephone Network Time Limit: 2 Sec  Memory Limit: 128 MB Submit: 63  Solved: 8 [Submit][Status][Web Board] Description The mayor of RMRCity wants to create a secure landli...
分类:Web程序   时间:2015-05-24 20:26:22    阅读次数:187
ACM题目:487-3279
题目是这样子的DescriptionBusinesses like to have memorable telephone numbers. One way to make a telephone number memorable is to have it spell a memorable wo...
分类:其他好文   时间:2015-05-23 18:13:28    阅读次数:94
Leetcode#17Letter Combinations of a Phone Number
LetterCombinationsofaPhoneNumberTotalAccepted:39162TotalSubmissions:151116MySubmissionsQuestionSolutionGivenadigitstring,returnallpossiblelettercombinationsthatthenumbercouldrepresent.Amappingofdigittoletters(justlikeonthetelephonebuttons)isgivenbelow.Input..
分类:其他好文   时间:2015-05-18 20:55:38    阅读次数:115
问题 :Meta标签中的format-detection属性及含义
format-detection翻译成中文的意思是“格式检测”,顾名思义,它是用来检测html里的一些格式的,那关于meta的format-detection属性主要是有以下几个设置:metaname="format-detection"content="telephone=no"metaname=...
分类:Web程序   时间:2015-05-18 12:29:08    阅读次数:140
使用Arduino Wire Library读取温湿度传感器AM2321
AM2321是采用I2C总线或单总线通讯的国产温湿度传感器。在AM2321手册中,当采用I2C通讯时,手册指定了多处需要主机等待的时间间隔,包括:(1)唤醒传感器时,从机不回复ACK,但主机主要等待800us~3ms再发送STOP信号;(2)主机发送读/写指令后,需等待至少1.5ms再发送读取时序;...
分类:其他好文   时间:2015-05-17 21:33:15    阅读次数:574
set up Raspberry Pi
5/11/15download NOOBSinstall operation system: Raspbianset up: wifi(bad USB wifi adapter)-use wire cable download openCV- install-waiting - downloa...
分类:Web程序   时间:2015-05-12 11:07:52    阅读次数:127
LeetCode 17 Letter Combinations of a Phone Number(C,C++,Java,Python)
Problem: Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. ...
分类:编程语言   时间:2015-05-10 14:18:54    阅读次数:159
Letter Combinations of a Phone Number——解题报告 (回溯法的应用 )
【题目】        Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below....
分类:其他好文   时间:2015-05-08 09:29:30    阅读次数:121
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