{"id":890,"date":"2019-07-20T08:11:03","date_gmt":"2019-07-20T00:11:03","guid":{"rendered":"http:\/\/SmokeyDays.top\/wordpress\/?p=890"},"modified":"2019-07-20T08:11:03","modified_gmt":"2019-07-20T00:11:03","slug":"lp2622-%e5%85%b3%e7%81%af%e9%97%ae%e9%a2%98ii","status":"publish","type":"post","link":"http:\/\/SmokeyDays.top\/wordpress\/2019\/07\/20\/lp2622-%e5%85%b3%e7%81%af%e9%97%ae%e9%a2%98ii\/","title":{"rendered":"lp2622 \u5173\u706f\u95ee\u9898II"},"content":{"rendered":"\n

\u663e\u7136\uff0c\u5bf9\u4e8e\u67d0\u4e2a\u72b6\u6001\uff0c\u6309\u4e0b\u67d0\u4e2a\u6309\u94ae\u4e4b\u540e\uff0c\u4e00\u5b9a\u4f1a\u5f97\u5230\u53e6\u4e00\u4e2a\u72b6\u6001\u3002
\n\u800c\u706f\u7684\u72b6\u6001\u6700\u5927\u53ea\u6709\\(2^10\\)\u3002
\n\u6545\u800c\u8003\u8651\u5efa\u4e00\u5f20\u56fe\uff0c2^n\u4e2a\u70b9\uff0cm\u6761\u8fb9\uff0c\u90a3\u4e48\u7b54\u6848\u5c31\u662f\u4ece0\u52302^n-1\u7684\u6700\u77ed\u8ddd\u79bb\u3002
\n\u76f4\u63a5BFS\u5373\u53ef\u3002 <\/p>\n\n\n\n

#include<iostream>\n#include<cstdio>\n#include<cstring>\n#include<algorithm>\n#include<queue>\n#include<vector>\nusing namespace std;\n\nconst int INF=0x3f3f3f3f;\nint n,m;\nqueue<int> q;\nint dep[1025],vis[1025];\nint a[15],b[105],c[105];\ninline int bfs(){\n\tfor(int i=0;i<(1<<n);++i){\n\t\tdep[i]=INF;\n\t}\n\tq.push(0);\n\tdep[0]=0;\n\tint p,v;\n\twhile(!q.empty()){\n\t\tp=q.front();\n\t\tq.pop();\n\t\tvis[p]=0;\n\t\tfor(int i=1;i<=m;++i){\n\t\t\tv=(p|b[i])&c[i];\n\t\t\tif(dep[v]>dep[p]+1){\n\t\t\t\tdep[v]=dep[p]+1;\n\t\t\t\tif(!vis[v]){\n\t\t\t\t\tq.push(v);\n\t\t\t\t\tvis[v]=1;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\treturn (dep[(1<<n)-1]^INF)?dep[(1<<n)-1]:-1;\n}\nvoid init(){\n\tscanf(\"%d%d\",&n,&m);\n\tfor(int i=1;i<=m;++i){\n\t\tb[i]=c[i]=0;\n\t}\n\tfor(int i=1;i<=m;++i){\n\t\tfor(int j=0;j<n;++j){\n\t\t\tscanf(\"%d\",&a[j]);\n\t\t\tif(a[j]==1){\n\t\t\t\tb[i]|=(1<<j);\n\t\t\t\tc[i]|=(1<<j);\n\t\t\t}\n\t\t\tif(a[j]==0){\n\t\t\t\tc[i]|=(1<<j);\n\t\t\t}\n\t\t}\n\t}\n\tprintf(\"%d\\n\",bfs());\n}\nint main(){\n\tinit();\n\treturn 0;\n}\n\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u663e\u7136\uff0c\u5bf9\u4e8e\u67d0\u4e2a\u72b6\u6001\uff0c\u6309\u4e0b\u67d0\u4e2a\u6309\u94ae\u4e4b\u540e\uff0c\u4e00\u5b9a\u4f1a\u5f97\u5230\u53e6\u4e00\u4e2a\u72b6\u6001\u3002 \u800c\u706f\u7684\u72b6\u6001\u6700\u5927\u53ea\u6709\\(2^10\\)\u3002 \u6545\u800c\u8003\u8651\u5efa … <\/p>\n
\u7ee7\u7eed\u9605\u8bfb\u201clp2622 \u5173\u706f\u95ee\u9898II\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[34,8,39,6,5],"tags":[],"_links":{"self":[{"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/posts\/890"}],"collection":[{"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/comments?post=890"}],"version-history":[{"count":1,"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/posts\/890\/revisions"}],"predecessor-version":[{"id":891,"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/posts\/890\/revisions\/891"}],"wp:attachment":[{"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/media?parent=890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/categories?post=890"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/SmokeyDays.top\/wordpress\/wp-json\/wp\/v2\/tags?post=890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}