{"id":330,"date":"2013-02-10T15:20:00","date_gmt":"2013-02-10T07:20:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/235"},"modified":"2013-02-10T15:20:00","modified_gmt":"2013-02-10T07:20:00","slug":"bzoj_1098_poi2007_office_biu-linked_list_optimization_dfs","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=330","title":{"rendered":"BZOJ 1098([POI2007]\u529e\u516c\u697cbiu-\u94fe\u8868\u4f18\u5316Dfs)"},"content":{"rendered":"<p><center style=\"font-family:arial,verdana,helvetica,sans-serif!important\"><\/p>\n<h2 style=\"color:blue\">1098: [POI2007]\u529e\u516c\u697cbiu<\/h2>\n<p><span class=\"green\">Time Limit:&nbsp;<\/span>20 Sec&nbsp;&nbsp;<span class=\"green\">Memory Limit:&nbsp;<\/span>162 MB<br \/>\n<span class=\"green\">Submit:&nbsp;<\/span>640&nbsp;&nbsp;<span class=\"green\">Solved:&nbsp;<\/span>254<br \/>\n[<a href=\"http:\/\/www.lydsy.com\/JudgeOnline\/submitpage.php?id=1098\" style=\"color:blue; text-decoration:none\">Submit<\/a>][<a href=\"http:\/\/www.lydsy.com\/JudgeOnline\/problemstatus.php?id=1098\" style=\"color:blue; text-decoration:none\">Status<\/a>][<a href=\"http:\/\/www.lydsy.com\/JudgeOnline\/bbs.php?id=1098\" style=\"color:blue; text-decoration:none\">Discuss<\/a>]<\/center><\/p>\n<h2 style=\"font-family:arial,verdana,helvetica,sans-serif!important; color:blue\">\nDescription<\/h2>\n<div class=\"content\" style=\"font-family:'Times New Roman'; height:auto; background-color:rgb(228,240,248); margin:0px; padding:0px 20px; font-size:14px\">\n\u4e00\u4e9b\u5458\u5de5\uff0c\u6bcf\u4e2a\u4eba\u77e5\u9053\u53e6\u5916\u4e00\u4e9b\u4eba\u7684\u7535\u8bdd\u53f7\u7801\u3002\u5047\u5982A\u77e5\u9053B\u7684\u7535\u8bdd\uff0cB\u4e5f\u4e00\u5b9a\u77e5\u9053A\u7684\u7535\u8bdd\u53f7\u3002\u4e0a\u53f8\u60f3\u628a\u8fd9\u4e9b\u5458\u5de5\u5206\u5230\u5c3d\u53ef\u80fd\u591a\u7684\u529e\u516c\u697c\u91cc\u53bb\u3002\u4f46\u662f\uff0c\u5982\u679cA\u548cB\u4e0d\u5728\u540c\u4e00\u529e\u516c\u697c\u5185\uff0cA\u548cB\u5c31\u5fc5\u987b\u6709\u5bf9\u65b9\u7684\u7535\u8bdd\u53f7\u7801\u3002\u6c42\u8fd9\u4e9b\u5458\u5de5\u6700\u591a\u80fd\u591f\u88ab\u5206\u5230\u591a\u5c11\u529e\u516c\u697c\u5185\uff0c\u5e76\u5347\u5e8f\u8f93\u51fa\u6bcf\u4e2a\u529e\u516c\u697c\u5185\u7684\u5458\u5de5\u4eba\u6570\u3002<\/div>\n<h2 style=\"font-family:arial,verdana,helvetica,sans-serif!important; color:blue\">\nInput<\/h2>\n<div class=\"content\" style=\"font-family:'Times New Roman'; height:auto; margin:0px; padding:0px 20px\">\n<span style=\"font-size:14px; background-color:rgb(228,240,248)\">\u7b2c\u4e00\u884c\u5305\u542b\u4e24\u4e2a\u6574\u6570N\uff082&lt;=N&lt;=100000\uff09\u548cM\uff081&lt;=M&lt;=2000000\uff09\u3002\u804c\u5458\u88ab\u4f9d\u6b21\u7f16\u53f7\u4e3a1,2,\u2026\u2026,N. \u4ee5\u4e0bM\u884c\uff0c\u6bcf\u884c\u5305\u542b\u4e24\u4e2a\u6b63\u6570A\u548cB(1&lt;=A&lt;b&lt;=n)\uff0c\u8868\u793a\u804c\u5458a\u548cb\u62e5\u6709\u5f7c\u6b64\u7684\u7535\u8bdd\u53f7\u7801\u3002&nbsp;<\/span><\/p>\n<h2 style=\"font-size:14px; color:blue\"><span style=\"background-color:rgb(255,255,255)\">Output<\/span><\/h2>\n<div class=\"content\" style=\"font-size:14px; background-color:rgb(228,240,248); height:auto; margin:0px; padding:0px 20px\">\n\u5305\u542b\u4e24\u884c\u3002\u7b2c\u4e00\u884c\u5305\u542b\u4e00\u4e2a\u6570S\uff0c\u8868\u793aFGD\u6700\u591a\u53ef\u4ee5\u5c06\u804c\u5458\u5b89\u7f6e\u8fdb\u7684\u529e\u516c\u697c\u6570\u3002\u7b2c\u4e8c\u884c\u5305\u542bS\u4e2a\u4ece\u5c0f\u5230\u5927\u6392\u5217\u7684\u6570\uff0c\u4e2d\u95f4\u7528\u7a7a&#26684;\u9694\u5f00\uff0c\u8868\u793a\u6bcf\u4e2a\u529e\u516c\u697c\u91cc\u5b89\u6392\u7684\u804c\u5458\u6570\u3002<\/div>\n<h2 style=\"font-size:14px; color:blue\"><span style=\"background-color:rgb(255,255,255)\">Sample Input<\/span><\/h2>\n<div class=\"content\" style=\"font-size:14px; background-color:rgb(228,240,248); height:auto; margin:0px; padding:0px 20px\">\n<span class=\"sampledata\" style=\"font-family:monospace; white-space:pre; background-color:rgb(141,184,255); font-size:18px\">7 16<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n1 3<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n1 4<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n1 5<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n2 3<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n3 4<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n4 5<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n4 7<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n4 6<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n5 6<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n6 7<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n2 4<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n2 7<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n2 5<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n3 5<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n3 7<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n1 7<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n<\/span><\/div>\n<h2 style=\"font-size:14px; color:blue\"><span style=\"background-color:rgb(255,255,255)\">Sample Output<\/span><\/h2>\n<div class=\"content\" style=\"font-size:14px; background-color:rgb(228,240,248); height:auto; margin:0px; padding:0px 20px\">\n<span class=\"sampledata\" style=\"font-family:monospace; white-space:pre; background-color:rgb(141,184,255); font-size:18px\">3<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n1 2 4<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n<br style=\"font-family:arial,verdana,helvetica,sans-serif!important\" \/><br \/>\n<\/span><\/div>\n<h2 style=\"font-size:14px; color:blue\"><span style=\"background-color:rgb(255,255,255)\">HINT<\/span><\/h2>\n<div class=\"content\" style=\"height:auto; margin:0px; padding:0px 20px\">\n<p style=\"font-size:14px; background-color:rgb(228,240,248)\">FGD\u53ef\u4ee5\u5c06\u804c\u54584\u5b89\u6392\u8fdb\u4e00\u53f7\u529e\u516c\u697c\uff0c\u804c\u54585\u548c\u804c\u54587\u5b89\u6392\u8fdb2\u53f7\u529e\u516c\u697c\uff0c\u5176\u4ed6\u4eba\u8fdb3\u53f7\u529e\u516c\u697c\u3002<\/p>\n<p><span style=\"font-size:14px\">\u9996\u5148\u6c42\u51fa\u539f\u56fe\u8865\u56fe\uff0c\u5219\u8981\u6c42\u8f6c\u5316\u4e3a-\u4e0d\u540c\u529e\u516c\u697c\u7684\u4eba\u4e0d\u8fde\u8fb9\u3002<\/span><\/p>\n<p><span style=\"font-size:14px\">\u4e8e\u662f\u60f3\u5230\u6c42\u5176\u8865\u56fe\u8fde\u901a\u5757-\u663e\u7136\u8865\u56fe\u662f\u7a20\u5bc6\u56fe\uff0c\u4f1aT<\/span><\/p>\n<p><span style=\"font-size:14px\">\u8fd9\u9898\u8981\u7528\u94fe\u8868\u4f18\u5316Dfs.<\/span><\/p>\n<p><span style=\"font-size:14px\">\u6b63\u5e38\u60c5\u51b5\u4e0b\u6211\u4eec\u4eceNode 1\u679a\u4e3e\u5230Node N \uff0c\u4f1aTLE<\/span><\/p>\n<p><span style=\"font-size:14px\">\u6240\u6709\u4e0d\u59a8\u5efa\u7acb\u94fe\u8868\uff0c\u5f53\u4e00\u4e2a\u5143\u7d20\u8d70\u540e\u4fbf\u5220\u6389<\/span><\/p>\n<p><span style=\"font-size:14px\">\u8fd9\u6837\u6548\u7387\u4fbf\u8f6c\u5316\u4e3aO(n&#43;m)<\/span><\/p>\n<p><span style=\"font-size:14px\">Ps:\u8fd9\u9898\u7528cin\u548cscanf\u6548\u7387\u5dee\u5f88\u591a<\/span><\/p>\n<p><span style=\"font-size:14px\"><img decoding=\"async\" src=\"http:\/\/nike0good.jp1.rpvhost.net\/wp-content\/uploads\/csdn\/other_site\/img_my_1360481119_3678.png\" alt=\"\" \/><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><\/span><\/p>\n<pre name=\"code\" class=\"cpp\">#include&lt;cstdio&gt;\n#include&lt;cstring&gt;\n#include&lt;cstdlib&gt;\n#include&lt;iostream&gt;\n#include&lt;algorithm&gt;\n#include&lt;functional&gt;\n#include&lt;cmath&gt;\n#include&lt;queue&gt;\n#include&lt;list&gt;\nusing namespace std;\n#define MAXN (100000+10)\n#define MAXM (2000000+10)\nint n,m;\nint size=0,edge[MAXM*2],pre[MAXM],next[MAXM*2];\nstruct link\n{\n\tint pre,next;\n}l[MAXN];\nvoid del(int x)\n{\n\tl[l[x].pre].next=l[x].next;\n\tl[l[x].next].pre=l[x].pre;\n}\nqueue&lt;int&gt; q;\nvoid addedge(int u,int v)\n{\n\tedge[++size]=v;\n\tnext[size]=pre[u];\n\tpre[u]=size;\n}\nbool b[MAXN],q_b[MAXN];\nint z[MAXN],siz_z=0;\nvoid bfs()\n{\n\tmemset(b,0,sizeof(b));\n\tmemset(q_b,0,sizeof(q_b));\n\twhile (l[0].next)\n\t{\n\t\tint now=l[0].next,ans=1;\n\t\tdel(now);\n\t\tq.push(now);q_b[now]=1;\n\t\t\/\/cout&lt;&lt;now&lt;&lt;endl; \/\/00x\n\t\twhile (!q.empty())\n\t\t{\n\t\t\tint u=q.front();q.pop();\n\t\t\tfor (int p=pre[u];p;p=next[p]) b[edge[p]]=1;\n\t\t\tfor(int i=l[0].next;i;i=l[i].next)\n\t\t\t{\n\t\t\t\tif (!b[i]&amp;&amp;!q_b[i])\n\t\t\t\t{\n\t\t\t\t\tq_b[i]=1;\n\t\t\t\t\tq.push(i);\/\/cout&lt;&lt;v&lt;&lt;endl;  \/\/0xx\n\t\t\t\t\tans++;\n\t\t\t\t\tdel(i);\n\t\t\t\t}\n\t\t\t}\n\t\t\tfor (int p=pre[u];p;p=next[p]) b[edge[p]]=0;\n\t\t\/\/\tcout&lt;&lt;endl;\n\t\t}\n\t\tz[++siz_z]=ans;\n\t}\n}\nint main()\n{\n\/\/\tfreopen(&quot;bzoj1098.in&quot;,&quot;r&quot;,stdin);\n\tmemset(pre,0,sizeof(pre));\n\tscanf(&quot;%d%d&quot;,&amp;n,&amp;m);\n\tfor (int i=1;i&lt;=m;i++)\n\t{\n\t\tint u,v;\n\t\tscanf(&quot;%d%d&quot;,&amp;u,&amp;v);\n\t\taddedge(u,v);addedge(v,u);\n\t}\n\tfor (int i=1;i&lt;=n;i++) {l[i-1].next=i;l[i].pre=i-1;} l[n].next=0;\n\tbfs();\n\tsort(z+1,z+1+siz_z);\n\tprintf(&quot;%dn&quot;,siz_z);\n\tif (siz_z&gt;0) {for (int i=1;i&lt;siz_z;i++) printf(&quot;%d &quot;,z[i]);printf(&quot;%d&quot;,z[siz_z]);\t}\n\treturn 0;\n}<\/pre>\n<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1098: [POI2007]\u529e\u516c\u697cbiu Time Limit:&nbsp;20 Sec&nbsp;&#038;nbs [&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":[121],"class_list":["post-330","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-linked_list"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>BZOJ 1098([POI2007]\u529e\u516c\u697cbiu-\u94fe\u8868\u4f18\u5316Dfs) - 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=330\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BZOJ 1098([POI2007]\u529e\u516c\u697cbiu-\u94fe\u8868\u4f18\u5316Dfs) - nike0good\" \/>\n<meta property=\"og:description\" content=\"1098: [POI2007]\u529e\u516c\u697cbiu Time Limit:&nbsp;20 Sec&nbsp;&amp;nbs [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nike0good.com\/?p=330\" \/>\n<meta property=\"og:site_name\" content=\"nike0good\" \/>\n<meta property=\"article:published_time\" content=\"2013-02-10T07:20:00+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/nike0good.jp1.rpvhost.net\/wp-content\/uploads\/csdn\/other_site\/img_my_1360481119_3678.png\" \/>\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=330#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=330\"},\"author\":{\"name\":\"nike0good\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/#\\\/schema\\\/person\\\/4defa38da89de87e400861e73396baad\"},\"headline\":\"BZOJ 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