{"id":316,"date":"2013-01-22T11:40:00","date_gmt":"2013-01-22T03:40:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/221"},"modified":"2013-01-22T11:40:00","modified_gmt":"2013-01-22T03:40:00","slug":"poj_2398_two_points","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=316","title":{"rendered":"POJ 2398(\u4e8c\u5206\u70b9\u96c6)"},"content":{"rendered":"\n\n\n
\n
Language:\n\n\n\n
Time Limit:<\/strong> 2000MS<\/td>\n <\/td>\nMemory Limit:<\/strong> 65536K<\/td>\n<\/tr>\n
Total Submissions:<\/strong> 8137<\/td>\n <\/td>\nAccepted:<\/strong> 3848<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Description<\/p>\n

\n\u5728\u957f\u65b9\u5f62 (x1,y1) (x2,y2) \u4e2d\u6709n\u5757\u677f\uff08\u4fdd\u8bc1\u4e0e\u4e0a\u4e0b\u8fb9\u76f8\u4ea4\uff09\uff0c\u548cm\u4e2a\u70b9\u3002<\/div>\n
\n\u73b0\u7ed9\u51fa\u677f\u548c\u70b9\u7684\u4f4d\u7f6e\uff0c\u6c42\u62e5\u6709\u76f8\u540c\u70b9\u6570\u7684\u533a\u57df\u6570\u3001
\n <\/span>
\n\"\" <\/p>\n<\/div>\n

Input<\/p>\n

\n\u591a\u7ec4\u6570\u636e.\u6bcf\u7ec4\u6570\u636e\u5f00\u5934\u4e3a n m x1 y1 x2 y2. n (0 < n <= 5000) m (0 < m <= 5000). (x1,y1)\u4e3a\u5de6\u4e0a\u89d2\u5750\u6807 , (x2,y2)\u4e3a\u53f3\u4e0b\u89d2\u5750\u6807. <\/div>\n
\n\u63a5\u4e0b\u6765 n \u884c\u67092\u4e2a\u6570 Ui Li,\u8868\u793a\u7b2ci\u5757\u677f\u4e3a (Ui,y1) (Li,y2). \uff08\u4fdd\u8bc1\u4e24\u4e24\u4e0d\u4ea4\uff09.<\/div>\n
\n\u63a5\u4e0b\u6765m \u884c\u4e3a\u70b9\u7684\u5750\u6807 Xj Yj \uff08\u4fdd\u8bc1\u4e0d\u5728\u677f\u4e0a\uff09<\/div>\n
\n\u6570\u636e\u4ee5 0 \u7ed3\u675f.<\/div>\n

Output<\/p>\n

\n\u6bcf\u7ec4\u6570\u636e\u7ed9\u51fa\u540c\u70b9\u6570\u7684\u533a\u57df\u6570<\/div>\n
\n\u70b9\u6570: \u533a\u57df\u6570<\/div>\n
\n\u2026(\u70b9\u65701\u2192n\uff0c\u533a\u57df\u6570\u4e3a0\u4e0d\u8f93\u51fa)<\/div>\n
\n\n<\/div>\n
\n\u8bf7\u6309\u8fd9\u4e2a格\u5f0f\u8f93\u51fa\u3002<\/div>\n
\n\u6bcf\u7ec4\u6570\u636e\u5f00\u5934\u8f93\u51fa\u201cBox\u201d\u3002 <\/div>\n

Sample Input<\/p>\n

5 6 0 10 60 0\n3 1\n4 3\n6 8\n10 10\n15 30\n1 5\n2 1\n2 8\n5 5\n40 10\n7 9\n4 10 0 10 100 0\n20 20\n40 40\n60 60\n80 80\n 5 10\n15 10\n25 10\n35 10\n45 10\n55 10\n65 10\n75 10\n85 10\n95 10\n0\n<\/pre>\n
Sample Output<\/p>\n
0: 2\n1: 1\n2: 1\n3: 1\n4: 0\n5: 1\n\n0: 2\n1: 2\n2: 2\n3: 2\n4: 2\n<\/pre>\n
Hint<\/p>\n
\n\u843d\u5728\u957f\u65b9\u5f62\u8fb9\u4e0a\u7684\u70b9\u4e5f\u7b97.<\/div>\n
Source<\/p>\n
\nRocky Mountain 2003<\/a><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/p>\n
\u57fa\u672c\u540cPOJ 2318<\/a><\/span><\/p>\n
\n<\/p>\n<\/p>\n
#include<cstdio>\n#include<cstring>\n#include<cstdlib>\n#include<cctype>\n#include<iostream>\n#include<algorithm>\n#include<functional>\nusing namespace std;\n#define MAXN (1000+10) \/\/Board\n#define MAXM (1000+10) \/\/Toy\nstruct P\n{\n\tdouble x,y;\n\tP(){}\n\tP(int _x,int _y):x(_x),y(_y){}\n\tfriend istream& operator>>(istream& cin,P &a){cin>>a.x>>a.y;return cin;\t}\n}a[MAXM];\nstruct V\n{\n\tdouble x,y;\n\tP s;\n\tV(){}\n\tV(P a,P b):x(b.x-a.x),y(b.y-a.y),s(a){}\n\tfriend int operator*(const V a,const V b)\n\t{\n\t\treturn a.x*b.y-a.y*b.x;\n\t}\n}c[MAXN];\nint n,m,x1,y1,x2,y2,f[MAXM];\nint cmp(V a,V b)\n{\n\treturn a.s.x<b.s.x;\n}\nvoid binary(int L,int R,int l,int r)\n{\n\tif (R-L==1)\n\t{\n\t\tf[r-l+1]++;\n\t\treturn;\n\t}\n\tint i=l,j=r,m=(l+r)>>1;\n\tV &M=c[(L+R)>>1];\n\tdo\n\t{\n\t\twhile (i<=r&&V(M.s,a[i])*M<0) i++;\n\t\twhile (j>=l&&V(M.s,a[j])*M>0) j--;\n\t\tif (i<=j) {swap(a[i],a[j]);i++;j--;\t}\n\t}while (i<=j);\n\n\ti--;j++;\n\tbinary(L,(L+R)>>1,l,i);\n\tbinary((L+R)>>1,R,j,r);\n\n}\nint main()\n{\n\/\/\tfreopen("poj2398.in","r",stdin);\n\n\twhile (scanf("%d%d",&n,&m)==2)\n\t{\n\t\tcout<<"Boxn";\n\t\tmemset(f,0,sizeof(f));\n\t\tcin>>x1>>y2>>x2>>y1;\n\t\tfor (int i=1;i<=n;i++)\n\t\t{\n\t\t\tint u,l;\n\t\t\tcin>>u>>l;\n\t\t\tc[i]=V(P(l,y1),P(u,y2));\n\t\t}\n\t\tc[0]=V(P(x1,y1),P(x1,y2));c[n+1]=V(P(x2,y1),P(x2,y2));\n\t\tsort(c+1,c+1+n,cmp);\n\t\tfor (int i=1;i<=m;i++) cin>>a[i];\n\t\tbinary(0,n+1,1,m);\n\t\tfor (int i=1;i<=m;i++)\n\t\t\tif (f[i]) cout<<i<<": "<<f[i]<<endl;\n\t}\n\treturn 0;\n}<\/pre><\/p>\n","protected":false},"excerpt":{"rendered":"
Language: Default Toy Storage Time Limit: 2000MS & […]<\/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":[103],"class_list":["post-316","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-point_set"],"yoast_head":"\nPOJ 2398(\u4e8c\u5206\u70b9\u96c6) - 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=316\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"POJ 2398(\u4e8c\u5206\u70b9\u96c6) - nike0good\" \/>\n<meta property=\"og:description\" content=\"Language: Default Toy Storage Time Limit: 2000MS & […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nike0good.com\/?p=316\" \/>\n<meta property=\"og:site_name\" content=\"nike0good\" \/>\n<meta property=\"article:published_time\" content=\"2013-01-22T03:40:00+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/nike0good.jp1.rpvhost.net\/wp-content\/uploads\/csdn\/other_site\/poj_org_2318_1.jpg\" \/>\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=316#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=316\"},\"author\":{\"name\":\"nike0good\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/#\\\/schema\\\/person\\\/4defa38da89de87e400861e73396baad\"},\"headline\":\"POJ 2398(\u4e8c\u5206\u70b9\u96c6)\",\"datePublished\":\"2013-01-22T03:40:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=316\"},\"wordCount\":73,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=316#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/nike0good.jp1.rpvhost.net\\\/wp-content\\\/uploads\\\/csdn\\\/other_site\\\/poj_org_2318_1.jpg\",\"keywords\":[\"\u70b9\u96c6\"],\"articleSection\":[\"DefaultCategory\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/nike0good.com\\\/?p=316#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=316\",\"url\":\"https:\\\/\\\/nike0good.com\\\/?p=316\",\"name\":\"POJ 2398(\u4e8c\u5206\u70b9\u96c6) - 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