[Python爬虫] 之三十：Selenium +phantomjs 利用 pyquery抓取栏目
一、介绍
本例子用Selenium +phantomjs爬取栏目（http://tv.cctv.com/lm/）的信息
二、网站信息
三、数据抓取
首先抓取所有要抓取网页链接，共39页，保存到数据库里面
def getUrls(self):
urls = []
urls.append('http://tv.cctv.com/lm/')
for index in range(2,40):
urls.append("javascript:window.scroll(0,145);DataInteraction({0});showPageTitle_fenyei2('ELMT1413526954890942',{0});".format(index))
self.db.SaveCCTVColumnUrls(urls,'')
针对上面的网站信息，来进行抓取
1、首先抓取信息列表
抓取代码：Elements = doc("div[id='text_box_0']").find('dl').find('dd')
2、栏目名称，链接
column1Element = element.find('div[class="text"]').find('h3').find('a')
columnName = column1Element.text().encode('utf8').replace(',', '，').replace('\n', '')
columnUrl = column1Element.attr('href')
四，实现代码
# coding=utf-8
import os
import re
from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from datetime import datetime,timedelta
import selenium.webdriver.support.ui as ui
import time
from pyquery import PyQuery as pq
import columnData
import mongoDB
class cctvColumnInfo: def __init__(self):
#通过配置文件获取IEDriverServer.exe路径
# self.urls = self.getUrls()
# IEDriverServer ='C:\Program Files\Internet Explorer\IEDriverServer.exe'
# self.driver = webdriver.Ie(IEDriverServer)
# self.driver.maximize_window()
self.driver = webdriver.PhantomJS(service_args=['--load-images=false'])#service_args=['--load-images=false']
self.driver.set_page_load_timeout(10)
self.driver.maximize_window()
self.db = mongoDB.mongoDbBase() def WriteUrl(self,url):
fileName = os.path.join(os.getcwd(), 'cctvColumn/cctvColumn_url.txt')
with open(fileName, 'a') as f:
f.write('\n'+url) def getUrls(self):
urls = []
urls.append('http://tv.cctv.com/lm/')
for index in range(2,40):
urls.append("javascript:window.scroll(0,145);DataInteraction({0});showPageTitle_fenyei2('ELMT1413526954890942',{0});".format(index))
self.db.SaveCCTVColumnUrls(urls,'')
# return urls def WriteLog(self, message,date):
fileName = os.path.join(os.getcwd(), 'cctvColumn/cctvColumn-'+date + '.txt')
with open(fileName, 'a') as f:
f.write(message) def getColumnInfo(self, colInfo):
ts = colInfo.split('主持人')
firstBroadcastTime = ts[0]
ts1 = ts[1].split('播出频道')
columnHost = '主持人' + ts1[0]
broadcastChannel = '播出频道' + ts1[1]
return firstBroadcastTime, columnHost, broadcastChannel def CatchData(self): urlIndex = 0
urls = self.db.GetCCTVColumnUrls()
itemIndex = 0
for u in urls:
url = u['url']
try:
if url == 'http://tv.cctv.com/lm/':
self.driver.get(url)
else:
self.driver.execute_script(url)
urlIndex += 1
time.sleep(2)
selenium_html = self.driver.execute_script("return document.documentElement.outerHTML")
doc = pq(selenium_html)
# Elements = doc("div[@id='text_box_0']/dl/dd")
Elements = doc("div[id='text_box_0']").find('dl').find('dd')
message = '' # for element in Elements:
column_name = url.encode('utf8')
print url
for element in Elements.items():
colobj = columnData.columnData()
itemIndex+=1
firstBroadcastTime = ''
ReplayBroadcastTime = ''
firstBroadcastChannel = ''
# column1Element = element.find('div[@class="text"]/h3/a')
# column1Element = element.find_element_by_xpath("//div[@class='ui-page-next']")
column1Element = element.find('div[class="text"]').find('h3').find('a')
columnName = column1Element.text().encode('utf8').replace(',', '，').replace('\n', '')
columnUrl = column1Element.attr('href') colobj.setColumnName(columnName)
colobj.setColumnUrl(columnUrl)
column_name += '\n' + columnName
# time.sleep(3)
print columnName # column2Element = element.find('div[@class="text"]/p/a')
column2Element = element.find('div[class="text"]').find('p').find('a')
columnTimeName = column2Element.text().encode('utf8').replace(',', '，').replace('\n', '')
columnTimeUrl = column2Element.attr('href')
colobj.setColumnTimeName(columnTimeName)
colobj.setColumnTimeUrl(columnTimeUrl)
# print columnTimeName + '; ' + columnTimeUrl # column34Elements = element.find('div[@class="text"]/span/a')
column34Elements = element.find('div[class="text"]').find('span').find('a') # for column34Element in column34Elements:
column34Index = 0
pastVideoUrl = ''
officialWebsiteUrl = ''
for column34Element in column34Elements.items():
if column34Index == 0:
pastVideoUrl = column34Element.attr('href')
colobj.setPastVideoUrl(pastVideoUrl)
else:
officialWebsiteUrl = column34Element.attr('href')
colobj.setOfficialWebsiteUrl(officialWebsiteUrl)
column34Index += 1 # columnImageElement = element.find('div[@class="img"]/a/img')
columnImageElement = element.find('div[class="img"]').find('a').find('img')
colImgUrl = columnImageElement.attr('src') if colImgUrl == None:
columnImageElement = element.find('div[class="image"]').find('a').find('img')
colImgUrl = columnImageElement.attr('src')
# print colImgUrl
colobj.setColImgUrl(colImgUrl)
# 首播时间
firstBroadcastTime1 = ''
# 主持人
columnHost = ''
# 播出频道
firstBroadcastChannel1 =''
# columnInfos = element.find('div[@class="lr"]/div')
columnInfos = element.find('div[class="lr"]').find('div')
if columnInfos:
for colInfo in columnInfos.items():
firstBroadcastTime1, columnHost, firstBroadcastChannel1 = self.getColumnInfo(
colInfo.text().encode('utf8').replace(',', '，').replace('\n', ''))
columnHost = columnHost.replace(',', '，')
if not firstBroadcastTime:
firstBroadcastTime = firstBroadcastTime1
if not firstBroadcastChannel:
firstBroadcastChannel = firstBroadcastChannel1
colobj.setColumnHost(columnHost)
colobj.setFirstBroadcastChannel(firstBroadcastChannel1)
colobj.setFirstBroadcastTime(firstBroadcastTime1)
# 栏目名称，首播时间，重播时间，播出频道，主持人，栏目url,栏目名称1(带时间的）,栏目名称1url,往期视频url,栏目官网url,），栏目对应图片url
mess = '\n{0},{1},{2},{3},{4},{5},{6},{7},{8},{9},{10}'.format(columnName, firstBroadcastTime,
ReplayBroadcastTime,
firstBroadcastChannel, columnHost,
columnUrl, columnTimeName,
columnTimeUrl, pastVideoUrl,
officialWebsiteUrl, colImgUrl) # print mess
message += mess self.db.SaveCCTVColumnData(colobj,itemIndex)
self.db.SaveCCTVColumnUrl(columnUrl, '', columnName) date = time.strftime('%Y-%m-%d')
self.WriteLog(message, date)
self.WriteUrl(column_name)
self.db.SetCCTVColumnUrlCrawlState(url)
except TimeoutException,e:
print 'timeout url: '+url self.driver.close()
self.driver.quit() def getBroadCast(self):
urls = self.db.GetSubCCTVColumnUrls() for u in urls:
firstBroadcastTime = ''
ReplayBroadcastTime = ''
firstBroadcastChannel = ''
messsage = ''
url = u['url']
# url='http://tv.cctv.com/lm/xqds'
# url='http://tv.cctv.com/lm/24xiaoshi/'
columnName = u['columnName'] # u'http://tv.cctv.com/lm/kanjian'
try:
self.driver.get(url)
time.sleep(2)
selenium_html = self.driver.execute_script("return document.documentElement.outerHTML")
doc = pq(selenium_html)
Elements = doc("p[class='p_1']") index = 0
for element in Elements.items():
if index == 0:
firstBroadcastTime = element.text().encode('utf8').replace(',', '，').replace('\n', '')
elif index == 1:
ReplayBroadcastTime = element.text().encode('utf8').replace(',', '，').replace('\n', '')
elif index == 2:
firstBroadcastChannel = element.text().encode('utf8').replace(',', '，').replace('\n', '')
break
index += 1
if index == 0:
Elements = doc("div[class='head_msg']").find('table').find('tbody').find('tr') for element in Elements.items():
messsage+=element.text().encode('utf8').replace(',', '，').replace('\n', '') if messsage:
firstBroadcastTime, ReplayBroadcastTime, firstBroadcastChannel= self.getBroadInfo(columnName.encode('utf8'),messsage)
self.db.SetCCTVColumnUrlCrawlState(url) if firstBroadcastChannel:
colobj = columnData.columnData()
colobj.setColumnName(columnName)
colobj.setFirstBroadcastTime(firstBroadcastTime)
colobj.setFirstBroadcastChannel(firstBroadcastChannel)
colobj.setReplayBroadcastTime(ReplayBroadcastTime)
self.db.UpdateCCTVColumnData(colobj)
print '\n'
print url
print columnName
print firstBroadcastTime
print firstBroadcastChannel
print ReplayBroadcastTime except TimeoutException, e:
print 'TimeoutException:'+url def getBroadInfo(self,columnName,column):
# column ='首播频道： CCTV-14首播时间： 周三17:15'
firstBroadcastTime = ''
ReplayBroadcastTime = ''
firstBroadcastChannel = ''
column=column.replace('栏目大全','')
if '>>' in column:
index = column.index('>>')
column = column[0:index] if 'CCTV13' in column:
column = column.replace('CCTV13', 'CCTV-13')
if 'CCTV6' in column:
column = column.replace('CCTV6', 'CCTV-6')
if 'CCTV1' in column:
column = column.replace('CCTV1','CCTV-1') if '官方微信' in column:
index = column.index('官方微信')
column = column[0:index] # if '停播' in column or '关闭' in column:
# return firstBroadcastTime, ReplayBroadcastTime, firstBroadcastChannel
# elif '>>' in column:
# index = column.index('>>')
# column = column[0:index] if '首播时间' in column:
if '重播时间' in column:
cols = column.split('重播时间')
firstBroadcastTime = cols[0]
if '独播频道' in cols[1]:
ReplayBroadcastTime = '重播时间' + cols[1].split('独播频道')[0]
firstBroadcastChannel = '独播频道' + cols[1].split('独播频道')[1]
elif '首播频道' in cols[1]:
ReplayBroadcastTime = '重播时间' + cols[1].split('首播频道')[0]
firstBroadcastChannel = '首播频道' + cols[1].split('首播频道')[1] elif '播出频道' in cols[1]:
ReplayBroadcastTime = '重播时间' + cols[1].split('播出频道')[0]
firstBroadcastChannel = '播出频道' + cols[1].split('播出频道')[1]
elif '独播频道' in column:
cols = column.split('独播频道')
firstBroadcastTime = cols[0]
firstBroadcastChannel = '独播频道' + cols[1]
elif '播出频道' in column:
cols = column.split('播出频道')
firstBroadcastTime = cols[0]
firstBroadcastChannel = '播出频道' + cols[1] elif '首播频道' in column:
cols = column.split('首播频道')
index = column.index('首播频道')
if index==0:
cols = column.split('首播时间')
firstBroadcastChannel = cols[0]
firstBroadcastTime = '首播时间' + cols[1]
else:
firstBroadcastTime = cols[0]
firstBroadcastChannel = '首播频道' + cols[1]
else:
if '首播(' in column and '重播(' in column:
if '独播频道' in column:
cols = column.split('独播频道')
firstBroadcastChannel = '独播频道' + cols[1]
firstBroadcastTime = cols[0]
# '首播(生活): 一-六18:52 日18:42重播(生活): 一-五 日16:08首播(文史): 一-五22:43六日22:33/30重播(文史): 二-五06:46六日06:24'
if '（生活版）' in columnName:
if '首播(文史)' in firstBroadcastTime:
temp = firstBroadcastTime.split('首播(文史)')[0]
if '重播(生活)' in temp:
firstBroadcastTime = '首播时间： '+temp.split('重播(生活)')[0].replace('首播(生活): ','')
ReplayBroadcastTime = '重播时间： '+temp.split('重播(生活)')[1].replace(': ','') # 首播(文史): 一-五22:43六日22:33/30重播(文史): 二-五06:46六日06:24首播(生活): 一-六18:52 日18:42重播(生活): 一-五 日16:08
elif '（文史版）' in columnName:
if '首播(生活)' in firstBroadcastTime:
temp = firstBroadcastTime.split('首播(生活)')[0]
if '重播(文史)' in temp:
firstBroadcastTime = '首播时间： '+temp.split('重播(文史)')[0].replace('首播(文史): ','')
ReplayBroadcastTime = '重播时间： '+ temp.split('重播(文史)')[1].replace(': ','') elif '播出频道' in column:
cols = column.split('播出频道')
firstBroadcastTime = cols[0]
firstBroadcastChannel = '播出频道' + cols[1] elif '首播频道' in column:
cols = column.split('首播频道')
firstBroadcastTime = cols[0]
firstBroadcastChannel = '首播频道' + cols[1]
return firstBroadcastTime,ReplayBroadcastTime,firstBroadcastChannel def exportColumnInfo(self):
columns = self.db.GetCCTVColumnData() for col in columns:
columnName = col['columnName'].encode('utf8')
firstBroadcastTime = col['firstBroadcastTime'].encode('utf8')
firstBroadcastTime=firstBroadcastTime.replace('首播时间： ','') firstBroadcastChannel = col['firstBroadcastChannel'].encode('utf8').replace("播出频道：", "").replace("独播频道：", "").replace("首播频道：", "")
firstBroadcastChannel =firstBroadcastChannel.replace(")","").replace("(","").replace("CCTV-8电视剧","CCTV-8 电视剧")
firstBroadcastChannel = firstBroadcastChannel.replace("CCTV-1综合频道", "CCTV-1 综合频道")
firstBroadcastChannel = firstBroadcastChannel.replace("CCTV-1高清频道", "CCTV-1 高清频道")
firstBroadcastChannel = firstBroadcastChannel.replace("CCTV13", "CCTV-13")
firstBroadcastChannel = firstBroadcastChannel.replace("CCTV1", "CCTV-1")
firstBroadcastChannel = firstBroadcastChannel.replace("CCTV-少儿", "CCTV-14 少儿")
firstBroadcastChannel = firstBroadcastChannel.replace("CCTV6", "CCTV-6")
firstBroadcastChannel = firstBroadcastChannel.replace("CCTV-12社会与法", "CCTV-12 社会与法") replayBroadcastTime = col['replayBroadcastTime'].encode('utf8')
replayBroadcastTime = replayBroadcastTime.replace('重播时间：', '')
columnHost = col['columnHost'].encode('utf8')
columnUrl = col['columnUrl'].encode('utf8')
columnTimeName = col['columnTimeName'].encode('utf8')
columnTimeUrl = col['columnTimeUrl']
if columnTimeUrl:
columnTimeUrl = columnTimeUrl.encode('utf8')
officialWebsiteUrl = col['officialWebsiteUrl'].encode('utf8')
pastVideoUrl = col['pastVideoUrl'].encode('utf8')
colImgUrl = col['colImgUrl'].encode('utf8') # 栏目名称，首播时间，重播时间，播出频道，主持人，栏目url,栏目名称1(带时间的）,栏目名称1url,往期视频url,栏目官网url,），栏目对应图片url
message = '\n{0},{1},{2},{3},{4},{5},{6},{7},{8},{9},{10}'.format(columnName, firstBroadcastTime,
replayBroadcastTime,
firstBroadcastChannel, columnHost,
columnUrl, columnTimeName,
columnTimeUrl, pastVideoUrl,
officialWebsiteUrl, colImgUrl) date = time.strftime('%Y-%m-%d')
self.WriteLog(message, date) obj = cctvColumnInfo()
# obj.getUrls()
# obj.CatchData()
# obj.getBroadCast()
obj.exportColumnInfo()
# coding=utf-8
import os
from pymongo import MongoClient
from pymongo import ASCENDING, DESCENDING
import codecs
import time
import columnData
import datetime
import re class mongoDbBase:
# def __init__(self, databaseIp = '127.0.0.1',databasePort = 27017,user = "ott",password= "ott", mongodbName='OTT_DB'):
def __init__(self, connstr='mongodb://ott:ott@127.0.0.1:27017/', mongodbName='OTT'):
# client = MongoClient(connstr)
# self.db = client[mongodbName]
client = MongoClient('127.0.0.1', 27017)
self.db = client.OTT
self.db.authenticate('ott', 'ott') def SaveCCTVColumnData(self,columnData,index):
count = self.db.column_data.find({'columnName': columnData.getColumnName()}).count()
if count == 0:
dictM ={'columnName':columnData.getColumnName(),
'firstBroadcastTime':columnData.getFirstBroadcastTime(),
'replayBroadcastTime':'',
'firstBroadcastChannel':columnData.getFirstBroadcastChannel(),
'columnHost':columnData.getColumnHost(),
'columnUrl':columnData.getColumnUrl(),
'columnTimeName':columnData.getColumnTimeName(),
'columnTimeUrl':columnData.getColumnTimeUrl(),
'officialWebsiteUrl':columnData.getOfficialWebsiteUrl(),
'pastVideoUrl': columnData.getPastVideoUrl(),
'colImgUrl':columnData.getColImgUrl(),
'index':index}
self.db.column_data.insert(dictM) def GetCCTVColumnData(self):
columns = self.db.column_data.find({},{'_id':0})
return columns def UpdateCCTVColumnData(self, columnData):
dictM ={'$set':{'replayBroadcastTime':columnData.getReplayBroadcastTime(),
'firstBroadcastTime':columnData.getFirstBroadcastTime(),
'firstBroadcastChannel': columnData.getFirstBroadcastChannel()}}
self.db.column_data.update({"columnName":columnData.getColumnName()},dictM) def SaveCCTVColumnUrl(self, url,suburl,columnName):
dictM = {'url': url, 'iscrawl': '','suburl':suburl,'columnName':columnName}
# db.urls.find({iscrawl:'1'}).count()
count = self.db.columnurls.find({'url': url}).count()
if count == 0:
self.db.columnurls.insert(dictM) def SaveCCTVColumnUrls(self, urlList,suburl):
index = 0
for url in urlList: # db.urls.find({iscrawl:'1'}).count()
count = self.db.columnurls.find({'url': url}).count()
if count == 0:
dictM = {'url': url, 'iscrawl': '', 'suburl': suburl,'index':index}
self.db.columnurls.insert(dictM)
index += 1
# self.db.Meeting.update({'title': meet["title"],'date': meet["date"]}, {'$set': dictM}, {'upsert': True}) def GetCCTVColumnUrls(self):
urls = self.db.columnurls.find({'iscrawl': '','suburl':''}, {'_id': 0, 'url': 1})
# for url in urls:
# #http://top.chinaz.com/hangye/index_yule.html
# print urls['url']
# break
return urls def GetSubCCTVColumnUrls(self):
urls = self.db.columnurls.find({'iscrawl': '', 'suburl': ''}, {'_id': 0, 'url': 1,'columnName':1})
# urls = self.db.columnurls.find({'firstBroadcastChannel': re.compile('栏目'), 'suburl': '1'}, {'_id': 0, 'url': 1, 'columnName': 1})
return urls
# def SetUrlCrawlState(self,urlList):
# for url in urlList:
# self.db.urls.update({'url':url},{'$set':{'iscrawl':'1'}}) def SetCCTVColumnUrlCrawlState(self, url):
# db.urls.update({iscrawl:'1'},{'$set':{iscrawl:'0'}},false,true)
self.db.columnurls.update({'url': url}, {'$set': {'iscrawl': ''}}) # d = mongoDbBase() # urls = []
# urls.append('abc')
# # d.SaveUrls(urls)
# d.SetUrlCrawlState(urls)
def download(self, url, name):
try:
# url='http://pp.myapp.com/ma_icon/0/icon_10910_1523714409/96'
# name='D:\work\python_crawl\down\2019.jpg'
pic = requests.get(url, timeout=5)
with open(name, 'wb') as f:
f.write(pic.content)
except requests.exceptions.ConnectionError:
print('当前图片无法下载')
[Python爬虫] 之三十：Selenium +phantomjs 利用 pyquery抓取栏目的更多相关文章
- [Python爬虫] 之三十一：Selenium +phantomjs 利用 pyquery抓取消费主张信息
一.介绍 本例子用Selenium +phantomjs爬取央视栏目(http://search.cctv.com/search.php?qtext=消费主张&type=video)的信息(标 ...
- [Python爬虫] 之十六：Selenium +phantomjs 利用 pyquery抓取一点咨询数据
本篇主要是利用 pyquery来定位抓取数据,而不用xpath,通过和xpath比较,pyquery效率要高. 主要代码: # coding=utf-8 import os import re fro ...
- [Python爬虫] 之二十五：Selenium +phantomjs 利用 pyquery抓取今日头条网数据
一.介绍 本例子用Selenium +phantomjs爬取今日头条(http://www.toutiao.com/search/?keyword=电视)的资讯信息,输入给定关键字抓取资讯信息. 给定 ...
- [Python爬虫] 之二十二：Selenium +phantomjs 利用 pyquery抓取界面网站数据
一.介绍 本例子用Selenium +phantomjs爬取界面(https://a.jiemian.com/index.php?m=search&a=index&type=news& ...
- [Python爬虫] 之二十九：Selenium +phantomjs 利用 pyquery抓取节目信息信息
一.介绍 本例子用Selenium +phantomjs爬取节目(http://tv.cctv.com/epg/index.shtml?date=2018-03-25)的信息 二.网站信息 三.数据抓 ...
- [Python爬虫] 之二十八：Selenium +phantomjs 利用 pyquery抓取网站排名信息
一.介绍 本例子用Selenium +phantomjs爬取中文网站总排名(http://top.chinaz.com/all/index.html,http://top.chinaz.com/han ...
- [Python爬虫] 之二十四：Selenium +phantomjs 利用 pyquery抓取中广互联网数据
一.介绍 本例子用Selenium +phantomjs爬取中广互联网(http://www.tvoao.com/select.html)的资讯信息,输入给定关键字抓取资讯信息. 给定关键字:数字:融 ...
- [Python爬虫] 之十九：Selenium +phantomjs 利用 pyquery抓取超级TV网数据
一.介绍 本例子用Selenium +phantomjs爬取超级TV(http://www.chaojitv.com/news/index.html)的资讯信息,输入给定关键字抓取资讯信息. 给定关键 ...
- [Python爬虫] 之十八：Selenium +phantomjs 利用 pyquery抓取电视之家网数据
一.介绍 本例子用Selenium +phantomjs爬取电视之家(http://www.tvhome.com/news/)的资讯信息,输入给定关键字抓取资讯信息. 给定关键字:数字:融合:电视 抓 ...
随机推荐
- 机器学习方法：回归（一）：线性回归Linear regression
欢迎转载,转载请注明:本文出自Bin的专栏blog.csdn.net/xbinworld. 开一个机器学习方法科普系列:做基础回顾之用,学而时习之:也拿出来与大家分享.数学水平有限,只求易懂,学习与工 ...
- canvas 进入游戏点击时苹果手机为什么会闪
canvas 进入游戏点击时苹果手机为什么会闪 ?? 大神门 谁有解决办法???
- Centos7安装和配置Jira7.3.6
(1)安装jdk 1.下载jdk 链接:https://pan.baidu.com/s/1umdV-Cmm1wi1RP5clIJXmg 密码:zevc 2.安装jdk rpm -ivh jdk-8u1 ...
- nginx中使用perl模块
转载自:http://www.netingcn.com/nginx-perl.html 如果对于一个绝大部分内容是静态的网站,只有极少数的地方需要动态显示,碰巧你又了解一点perl知识,那么nginx ...
- Nginx的基本理论
Nginx是什么? 1).Nginx 就是一台反向代理服务器,代理服务器一般是指局域网内部的机器通过代理服务发送请求到互联网上的服务器,代理服务器一般作用于客户端.比如GoAgent,FQ神器. 一个 ...
- java中的object... args参数
关于java方法中Object... args参数的含义 在阅读google发布的volley源码时,突然看到一个方法中存在这样的写法,如 :v(String format, Object... ar ...
- CodeForces 732E Sockets
贪心,优先队列. 将$s$按照从小到大的顺序扔进优先队列.从小的开始与电脑配对,如果找不到合适的电脑,那么再变小一次,直到找到与之配对的电脑或者作废. #pragma comment(linker, ...
- 并发系列3-大白话聊聊Java并发面试问题之谈谈你对AQS的理解？【石杉的架构笔记】
- Linux命令之route
route [-CFvnNee] [-A family] [-4|-6] route [-v] [-A family] [-4|-6] add [-net|-host] target [netmask ...
- Codeforces 555 B. Case of Fugitive
\(>Codeforces \space 555 B. Case of Fugitive<\) 题目大意 : 有 \(n\) 个岛屿有序排列在一条线上,第 \(i\) 个岛屿的左端点为 \ ...