{"id":49,"date":"2012-08-22T17:15:00","date_gmt":"2012-08-22T09:15:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/49"},"modified":"2012-08-22T17:15:00","modified_gmt":"2012-08-22T09:15:00","slug":"poj_2528_the_data_is_incorrect_segment_tree","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=49","title":{"rendered":"POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09"},"content":{"rendered":"<p>\u6b64\u9898\u6570\u636e\u6709\u8bef\u2026\u2026<\/p>\n<p>\u662f\u6211\u82f1\u6587\u592a\u5dee\uff0c\u8fd8\u662f\u7b54\u6848\u51fa\u9519\u2026\u2026<\/p>\n<p>\n<\/p>\n<p><pre name=\"code\" class=\"delphi\">Program P2528;\nconst\n   maxn=10000;\n   maxr=10000000;\nvar\n   t,n,i,j,k:longint;\n   a,b,v:array[1..maxn*2] of longint;\n   h:array[1..maxr] of longint;\n   col:array[1..maxn*100] of longint;\n   visit:array[1..maxn*2] of boolean;\n\n\nprocedure qsort(l,r:longint);\nvar\n   i,j,m,p:longint;\nbegin\n   i:=l;\n   j:=r;\n   m:=v[(l+r) div 2];\n   repeat\n      while v[i]&lt;m do inc(i);\n      while v[j]&gt;m do dec(j);\n      if i&lt;=j then\n      begin\n         p:=v[i];\n         v[i]:=v[j];\n         v[j]:=p;\n         inc(i);\n         dec(j);\n      end;\n   until i&gt;j;\n   if l&lt;j then qsort(l,j);\n   if i&lt;r then qsort(i,r);\nend;\nprocedure update(l,r,sonl,sonr,root,color:longint);\nvar\n   i,j,k,mid:longint;\nbegin\n   mid:=(l+r) shr 1;\n   if (sonl&lt;=l) and (r&lt;=sonr) then\n   begin\n      col[root]:=color;\n      exit;\n   end;\n\n   if (col[root]&gt;=0) then\n   begin\n      col[root*2]:=col[root];\n      col[root*2+1]:=col[root];\n      col[root]:=-1;\n   end;\n   if not((mid&lt;sonl) or (sonr&lt;l)) then update(l,mid,sonl,sonr,root*2,color);\n   if not((r&lt;sonl) or (sonr&lt;mid+1)) then update(mid+1,r,sonl,sonr,root*2+1,color);\n\n\n\nend;\nfunction dfs(l,r,root:longint):longint;\nvar\n   i,j,mid:longint;\nbegin\n   mid:=(l+r) shr 1;\n   if col[root]=0 then exit(0);\n   if col[root]&gt;0 then\n   begin\n      if not(visit[col[root]]) then\n      begin\n         visit[col[root]]:=true;\n         exit(1);\n      end\n      else exit(0);\n   end;\n\n   exit(dfs(l,mid,root*2)+dfs(mid+1,r,root*2+1));\n\nend;\nbegin\n   read(t);\n   while t&gt;0 do\n   begin\n      dec(t);\n      read(n);\n      for i:=1 to n do\n      begin\n         read(a[i],b[i]);\n         v[i]:=a[i];\n         v[n+i]:=b[i];\n      end;\n      qsort(1,2*n);\n      j:=1;\n      for i:=2 to 2*n do\n         if v[i]&lt;&gt;v[i-1] then\n         begin\n            inc(j);\n            v[j]:=v[i];\n         end;\n      for i:=1 to j do h[v[i]]:=i;\n\n      fillchar(col,sizeof(col),0);\n\n      for i:=1 to n do\n      begin\n        update(1,j,h[a[i]],h[b[i]],1,i);\n      end;\n      fillchar(visit,sizeof(visit),false);\n      writeln(dfs(1,j,1));\n\n   end;\nend.\n<\/pre><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6b64\u9898\u6570\u636e\u6709\u8bef\u2026\u2026 \u662f\u6211\u82f1\u6587\u592a\u5dee\uff0c\u8fd8\u662f\u7b54\u6848\u51fa\u9519\u2026\u2026 Program P2528; const maxn=1000 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[3],"tags":[109],"class_list":["post-49","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-segment_tree"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09 - nike0good<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nike0good.com\/?p=49\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09 - nike0good\" \/>\n<meta property=\"og:description\" content=\"\u6b64\u9898\u6570\u636e\u6709\u8bef\u2026\u2026 \u662f\u6211\u82f1\u6587\u592a\u5dee\uff0c\u8fd8\u662f\u7b54\u6848\u51fa\u9519\u2026\u2026 Program P2528; const maxn=1000 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nike0good.com\/?p=49\" \/>\n<meta property=\"og:site_name\" content=\"nike0good\" \/>\n<meta property=\"article:published_time\" content=\"2012-08-22T09:15:00+00:00\" \/>\n<meta name=\"author\" content=\"nike0good\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"nike0good\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=49#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=49\"},\"author\":{\"name\":\"nike0good\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/#\\\/schema\\\/person\\\/4defa38da89de87e400861e73396baad\"},\"headline\":\"POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09\",\"datePublished\":\"2012-08-22T09:15:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=49\"},\"wordCount\":1,\"commentCount\":0,\"keywords\":[\"\u7ebf\u6bb5\u6811\"],\"articleSection\":[\"DefaultCategory\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/nike0good.com\\\/?p=49#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=49\",\"url\":\"https:\\\/\\\/nike0good.com\\\/?p=49\",\"name\":\"POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09 - nike0good\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/#website\"},\"datePublished\":\"2012-08-22T09:15:00+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/#\\\/schema\\\/person\\\/4defa38da89de87e400861e73396baad\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=49#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/nike0good.com\\\/?p=49\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=49#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/nike0good.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/#website\",\"url\":\"https:\\\/\\\/nike0good.com\\\/\",\"name\":\"nike0good\",\"description\":\"\u6709\u6240\u4f5c\u4e3a\u662f\u4eba\u751f\u7684\u6700\u9ad8\u5883\u754c\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/nike0good.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/#\\\/schema\\\/person\\\/4defa38da89de87e400861e73396baad\",\"name\":\"nike0good\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/8e5fa08d5c367a1a6fb5ff13bb10ed5a331f981513256951290ae42322da6854?s=96&d=identicon&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/8e5fa08d5c367a1a6fb5ff13bb10ed5a331f981513256951290ae42322da6854?s=96&d=identicon&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/8e5fa08d5c367a1a6fb5ff13bb10ed5a331f981513256951290ae42322da6854?s=96&d=identicon&r=g\",\"caption\":\"nike0good\"},\"sameAs\":[\"https:\\\/\\\/nike0good.com\"],\"url\":\"https:\\\/\\\/nike0good.com\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09 - nike0good","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/nike0good.com\/?p=49","og_locale":"zh_CN","og_type":"article","og_title":"POJ 2528\uff08\u6570\u636e\u6709\u8bef\u7684\u7ebf\u6bb5\u6811\uff09 - nike0good","og_description":"\u6b64\u9898\u6570\u636e\u6709\u8bef\u2026\u2026 \u662f\u6211\u82f1\u6587\u592a\u5dee\uff0c\u8fd8\u662f\u7b54\u6848\u51fa\u9519\u2026\u2026 Program P2528; 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