{"id":231,"date":"2012-11-05T12:50:00","date_gmt":"2012-11-05T04:50:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/136"},"modified":"2012-11-05T12:50:00","modified_gmt":"2012-11-05T04:50:00","slug":"segment_matrix_the_binary_range_l_r","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=231","title":{"rendered":"\u5206\u5272\u77e9\u9635 (\u4e8c\u5206\u8303\u56f4[L,R)\uff09"},"content":{"rendered":"

   \u5206\u5272\u77e9\u9635<\/strong><\/p>\n

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

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

    \u6709N*M\u7684\u4e00\u4e2a\u975e\u8d1f<\/span><\/strong>\u6574\u6570\u77e9\u9635\u3002\u73b0\u5728\u8981\u628a\u77e9\u9635\u5206\u6210A*B\u5757\u3002\u77e9\u9635\u5148\u6c34\u5e73\u5730\u5207A-1\u5200\uff0c\u628a\u77e9\u9635\u5212\u5206\u6210A\u5757\u3002\u7136\u540e\u518d\u628a\u5269\u4e0b\u6765\u7684\u6bcf\u4e00\u5757\u72ec\u7acb\u5730\u5207\u7ad6\u7740<\/span><\/strong>B-1\u5200\u3002\u6bcf\u5757\u7684\u4ef7值\u4e3a\u5757\u4e0a\u7684\u6570\u5b57\u548c\u3002\u6c42\u4e00\u79cd\u65b9\u6848\uff0c\u4f7f\u5f97\u6700\u5c0f\u4ef7值\u5757\u7684\u4ef7值\u6700\u5927\u3002<\/p>\n

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

    \u7b2c\u4e00\u884c\u56db\u4e2a\u6574\u6570N,M,A,B\u3002<\/p>\n

    \u63a5\u4e0b\u6765N\u884c\uff0c\u6bcf\u884cM\u4e2a\u975e\u8d1f<\/span><\/strong>\u6574\u6570\u3002\u4ee3\u8868\u8fd9\u4e2a\u77e9\u9635<\/p>\n

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

    \u4e00\u4e2a\u6570\u5b57\u3002\u6700\u5c0f\u4ef7值\u5757\u7684\u4ef7值\u3002<\/p>\n

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

5 4 4 2<\/p>\n

1 2 21<\/p>\n

3 1 1 1<\/p>\n

2 0 1 3<\/p>\n

1 1 1 1<\/p>\n

1 1 11<\/p>\n

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

    3<\/p>\n

 <\/strong><\/p>\n

\u6837\u4f8b\u89e3\u91ca\u89c1\u56fe\u7247<\/strong><\/p>\n

\n

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

   1<=A<=N<=500<\/p>\n

   1<=B<=M<=500<\/p>\n

    \u5176\u4ed6\u6570\u5b57\u5c0f\u4e8e4000\u3002<\/p>\n

 <\/p>\n

 \u4e8c\u5206\u7684\u540c\u5fd7\u8bf7\u6ce8\u610f\u4e86<\/p>\n

m=(l+r)\/2 <-----\u8fd9\u53e5\u662f\u6c38\u8fdc\u4e5f\u679a\u4e0d\u5230L\u4e0eR\u7684<\/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 (500+10)\n#define MAXM (500+10)\n#define MAXT (2000000+10)\nint n,m,t1,t2,a[MAXN][MAXM],sum[MAXN][MAXM]={0};\nbool is_ok(int l,int r,int _m)\n{\n\tint tot=0,p=0;\n\tfor (int i=1;i<=m;i++)\n\t{\n\t\ttot+=sum[r][i]-sum[l-1][i];\n\t\tif (tot>=_m) {tot=0;p++;}\n\t}\n\tif (p>=t2) return 1;\n\telse return 0;\n}\nbool is_ok_(int _m)\n{\n\tint p=0,l=1;\n\tfor (int i=1;i<=n;i++)\n\t{\n\t\tif (is_ok(l,i,_m)) {l=i+1;p++;}\n\t}\n\tif (p>=t1) return 1;\n\telse return 0;\n}\nint main()\n{\n\tfreopen("browine.in","r",stdin);\n\tfreopen("browine.out","w",stdout);\n\tscanf("%d%d%d%d",&n,&m,&t1,&t2);\n\tfor (int i=1;i<=n;i++)\n\t\tfor (int j=1;j<=m;j++)\n\t\t{\n\t\t\tscanf("%d",&a[i][j]);\n\t\t\tsum[i][j]=sum[i-1][j]+a[i][j];\n\t\t}\n\t\/*\n\tfor (int i=1;i<=n;i++)\n\t\tfor (int j=1;j<=m;j++)\n\t\t{\n\t\t\tprintf("%d ",sum[i][j]);\n\t\t}\n\t*\/\n\/\/\tcout<<(is_ok_(4));\n\tint l=1,r=1,ans=0;\n\tfor (int j=1;j<=m;j++) r+=sum[n][j];\n\n\tfor (int i=1;i<=60;i++)\n\t{\n\t\tint m_=(l+r)\/2;\n\t\tif (is_ok_(m_)) {l=ans=m_;}\n\t\telse r=m_;\n\t}\n\tprintf("%dn",ans);\n\n\/\/\twhile (1);\n\treturn 0;\n}\n<\/pre>\n<\/p>\n
\n<\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
   \u5206\u5272\u77e9\u9635         […]<\/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":[55],"class_list":["post-231","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-dichotomy"],"yoast_head":"\n\u5206\u5272\u77e9\u9635 (\u4e8c\u5206\u8303\u56f4[L,R)\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=231\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5206\u5272\u77e9\u9635 (\u4e8c\u5206\u8303\u56f4[L,R)\uff09 - nike0good\" \/>\n<meta property=\"og:description\" content=\"   \u5206\u5272\u77e9\u9635        […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nike0good.com\/?p=231\" \/>\n<meta property=\"og:site_name\" content=\"nike0good\" \/>\n<meta property=\"article:published_time\" content=\"2012-11-05T04:50:00+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=231#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=231\"},\"author\":{\"name\":\"nike0good\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/#\\\/schema\\\/person\\\/4defa38da89de87e400861e73396baad\"},\"headline\":\"\u5206\u5272\u77e9\u9635 (\u4e8c\u5206\u8303\u56f4[L,R)\uff09\",\"datePublished\":\"2012-11-05T04:50:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=231\"},\"wordCount\":79,\"commentCount\":0,\"keywords\":[\"\u4e8c\u5206\u6cd5\"],\"articleSection\":[\"DefaultCategory\"],\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/nike0good.com\\\/?p=231#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nike0good.com\\\/?p=231\",\"url\":\"https:\\\/\\\/nike0good.com\\\/?p=231\",\"name\":\"\u5206\u5272\u77e9\u9635 (\u4e8c\u5206\u8303\u56f4[L,R)\uff09 - 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