{"id":230,"date":"2012-11-05T12:35:00","date_gmt":"2012-11-05T04:35:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/135"},"modified":"2012-11-05T12:35:00","modified_gmt":"2012-11-05T04:35:00","slug":"mixed_graph_h_u_mistakenly_written_as_h_q_u","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=230","title":{"rendered":"\u6df7\u5408\u56fe (h[u]\u8bef\u5199\u6210h[q[u]]\u2026\u2026\uff09"},"content":{"rendered":"<\/p>\n

                                     \u6df7\u5408\u56fe<\/strong><\/p>\n

                   (dizzy.c\/cpp\/pas)<\/strong><\/p>\n

\u3010\u95ee\u9898\u63cf\u8ff0\u3011<\/strong><\/p>\n

    \u6709\u4e00\u5f20N\u4e2a\u70b9\uff0cM1\u6761\u6709\u5411\u8fb9\uff0cM2\u6761\u65e0\u5411\u8fb9\u7ec4\u6210\u7684\u6df7\u5408\u56fe\u3002\u8be2\u95ee\u4e00\u4e2a\u7ed9\u6240\u6709\u65e0\u5411\u8fb9\u5b9a\u5411\u7684\u65b9\u6848\u3002\u4f7f\u5f97\u6700\u7ec8\u7684\u56fe\u4e2d\u6ca1\u6709\u73af\u3002\u4fdd\u8bc1\u4e00\u5b9a\u6709\u89e3\u3002<\/p>\n

\u3010\u8f93\u5165格\u5f0f\u3011<\/strong><\/p>\n

    \u7b2c\u4e00\u884c\uff0c\u4e09\u4e2a\u6570\u5b57N,M1,M2\u3002<\/p>\n

    \u63a5\u4e0b\u6765M1+M2\u884c\uff0c\u6bcf\u884c\u4e24\u6570\u5b57Ai,Bi\u3002\u8868\u793a\u4e00\u6761\u8fb9\u3002<\/p>\n

    \u524dM1\u6761\u662f\u6709\u5411\u8fb9\u3002\u65b9\u5411\u662fAi\u5230Bi\u3002<\/p>\n

\u3010\u8f93\u51fa格\u5f0f\u3011<\/strong><\/p>\n

    \u8f93\u51faM2\u884c\uff0c\u6309\u8f93\u51fa\u987a\u5e8f\u8f93\u51fa\u4e3a\u65e0\u5411\u8fb9\u786e\u5b9a\u7684\u65b9\u5411\u3002Ai Bi\u6216Bi Ai\u3002<\/p>\n

    \u6709\u591a\u89e3\u65f6\u8f93\u51fa\u4efb\u610f\u89e3\u3002<\/p>\n

\u3010\u6837\u4f8b\u8f93\u5165\u3011<\/strong><\/p>\n

4 2 3<\/p>\n

1 2<\/p>\n

4 3<\/p>\n

1 3<\/p>\n

4 2<\/p>\n

3 2<\/p>\n

\u3010\u6837\u4f8b\u8f93\u51fa\u3011<\/strong><\/p>\n

1 3<\/p>\n

2 4<\/p>\n

2 3<\/p>\n

\u3010\u6570\u636e\u89c4\u6a21\u3011<\/strong><\/p>\n

    1<=N<=100 000<\/p>\n

    1<=M1,M2<=100000<\/p>\n

 <\/p>\n

<\/p>\n

\u62d3\u6251\u6392\u5e8f\u5373\u4f7f\u6709\u91cd\u8fb9\u4e5f\u6210\u7acb\uff01<\/p>\n

\u8bf7\u52a1\u5fc5\u6ce8\u610f\u54c8\u5e0c\u8868h[u]\u522b\u591a\u5957\u4e00\u4e2aq[u]\u2026\u2026<\/p>\n

\n<\/p>\n

\n<\/p>\n

#include<cstdio>\n#include<cstring>\n#include<cmath>\n#include<cstdlib>\n#include<iostream>\n#include<functional>\n#include<algorithm>\nusing namespace std;\n#define MAXN (100000+10)\n#define MAXM (100000+10)\nint n,m1,m2,indegree[MAXN]={0},head[MAXN],next[MAXM]={0},edge[MAXM]={0},tot=0;\nvoid addedge(int u,int v)\n{\n\tedge[++tot]=v;\n\tnext[tot]=head[u];\n\thead[u]=tot;\n}\nint q[MAXN*2];\nbool b[MAXN]={0};\nvoid topsort()\n{\n\tint head_=1,tail=0;\n\tfor (int i=1;i<=n;i++)\n\t\tif (indegree[i]==0)\n\t\t{\n\t\t\tq[++tail]=i;b[i]=1;\n\t\t}\n\twhile (head_<=tail)\n\t{\n\t\tint now=q[head_];\n\t\tint p=head[now];\n\t\twhile (p)\n\t\t{\n\t\t\tint v=edge[p];\n\t\t\tindegree[v]--;\n\t\t\tif (indegree[v]==0)\n\t\t\t{\n\t\t\t\tq[++tail]=v;b[v]=1;\n\t\t\t}\n\t\t\tp=next[p];\n\t\t}\n\t\thead_++;\n\t}\n}\nint h[MAXN];\nint main()\n{\n\tfreopen("dizzy.in","r",stdin);\n\tfreopen("dizzy.out","w",stdout);\n\tscanf("%d%d%d",&n,&m1,&m2);\n\tmemset(head,0,sizeof(head));\n\tfor (int i=1;i<=m1;i++)\n\t{\n\t\tint u,v;\n\t\tscanf("%d%d",&u,&v);\n\t\taddedge(u,v);\n\t\tindegree[v]++;\n\t}\n\ttopsort();\n\tfor (int i=1;i<=n;i++)\n\t{\n\t\th[q[i]]=i;\n\t\/\/\tcout<<q[i]<<' ';\n\t}\n\/*\n\tfor (int i=1;i<=n;i++) cout<<q[i]<<' ';\n\tcout<<endl;\n\tfor (int i=1;i<=n;i++) cout<<h[i]<<' ';\n\tcout<<endl;\n*\/\n\tfor (int i=1;i<=m2;i++)\n\t{\n\t\tint u,v;\n\t\tscanf("%d%d",&u,&v);\n\t\tif (h[u]<h[v]) printf("%d %dn",u,v);\n\t\telse printf("%d %dn",v,u);\n\t}\n\/\/\twhile (1);\n\treturn 0;\n}\n<\/pre><\/p>\n","protected":false},"excerpt":{"rendered":"
          &nbsp […]<\/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":[78],"class_list":["post-230","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-topological_sorting"],"yoast_head":"\n\u6df7\u5408\u56fe (h[u]\u8bef\u5199\u6210h[q[u]]\u2026\u2026\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=230\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6df7\u5408\u56fe (h[u]\u8bef\u5199\u6210h[q[u]]\u2026\u2026\uff09 - nike0good\" \/>\n<meta property=\"og:description\" content=\"          &nbsp […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nike0good.com\/?p=230\" \/>\n<meta property=\"og:site_name\" content=\"nike0good\" \/>\n<meta property=\"article:published_time\" content=\"2012-11-05T04:35:00+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=230#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=230\"},\"author\":{\"name\":\"nike0good\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/#\\\/schema\\\/person\\\/4defa38da89de87e400861e73396baad\"},\"headline\":\"\u6df7\u5408\u56fe (h[u]\u8bef\u5199\u6210h[q[u]]\u2026\u2026\uff09\",\"datePublished\":\"2012-11-05T04:35:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=230\"},\"wordCount\":103,\"commentCount\":0,\"keywords\":[\"\u62d3\u6251\u6392\u5e8f\"],\"articleSection\":[\"DefaultCategory\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/nike0good.com\\\/?p=230#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=230\",\"url\":\"https:\\\/\\\/nike0good.com\\\/?p=230\",\"name\":\"\u6df7\u5408\u56fe (h[u]\u8bef\u5199\u6210h[q[u]]\u2026\u2026\uff09 - 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