{"id":140,"date":"2012-08-14T18:48:00","date_gmt":"2012-08-14T10:48:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/28"},"modified":"2012-08-14T18:48:00","modified_gmt":"2012-08-14T10:48:00","slug":"the_poj_1459_reserved_promote_the","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=140","title":{"rendered":"POJ 1459\uff08\u9884\u7559\u63a8\u8fdb\uff09"},"content":{"rendered":"<p>hllp\u5199\u5230\u6700\u540e\u5199\u6210\u9884\u7559\u63a8\u8fdb\u4e86\u2026\u2026<\/p>\n<p>\n<\/p>\n<p><pre name=\"code\" class=\"delphi\">Program P1459;\nvar\n   n,np,nc,m,i,j,src,t,level:longint;\n   ch:char;\n   s:string;\n   d,e,pre:array[-1..100] of longint;\n   map,f:array[-1..100,-1..100] of longint;\n   queue:array[1..102] of longint;\n   list:array[0..103,0..102] of longint;\n   b:array[-1..100] of boolean;\nfunction min(a,b:longint):longint;\nbegin\n   if a&lt;b then exit(a) else exit(b);\nend;\nfunction max(a,b:longint):longint;\nbegin\n   if a&gt;b then exit(a) else exit(b);\nend;\n\nprocedure hllp;\nvar\n   i,j,maxflow,flow,minj:longint;\n   h,t:longint;\n   tag:boolean;\nbegin\n   level:=0;\n   maxflow:=0;\n   flow:=0;\n   h:=1;\n   t:=1;\n   queue[h]:=n;\n   while h&lt;=t do\n   begin\n      for i:=0 to n-1 do\n         if (map[i,queue[h]]&gt;0) and (not(b[i])) then\n         begin\n            inc(t);\n            queue[t]:=i;\n            d[i]:=d[queue[h]]+1;\n            b[i]:=true;\n         end;\n      inc(h);\n   end;\n   d[-1]:=n+2;\n   {\n   for i:=0 to n-1 do\n      if e[i]&gt;0 then\n      begin\n         inc(list[d[i],0]);\n         list[d[i],list[d[i],0]]:=i;\n         level:=max(level,d[i]);\n      end;\n   }\n   while (true) do\n   begin\n      i:=n;\n      for j:=0 to n-1 do\n      begin\n         if (e[j]&gt;0) and (d[j]&gt;d[i]) then i:=j;\n      end;\n      if i=n then break;\n {     i:=list[level,list[level,0]];\n      dec(list[level,0]);\n      while (level&gt;0) and (list[level,0]=0) do dec(level);\n      }\n\n      tag:=false;\n      for j:=-1 to n do\n      begin\n         if e[i]=0 then break;\n            if (d[i]=d[j]+1) and (map[i,j]-f[i,j]&gt;0) then\n            begin\n               tag:=true;\n               flow:=min(map[i,j]-f[i,j],e[i]);\n               dec(e[i],flow);\n               inc(e[j],flow);\n               inc(f[i,j],flow);\n               f[j,i]:=-f[i,j];\n            end;\n      end;\n      if (e[i]&gt;0) then\n      begin\n         minj:=maxlongint;\n         for j:=-1 to n do\n            if (map[i,j]-f[i,j]&gt;0) {and (d[i]&gt;=d[j])} then minj:=min(minj,d[j]);\n        { if minj=maxlongint then\n         begin\n            e[i]:=0;\n            continue;\n         end;    }\n         d[i]:=minj+1;\n      end;\n\n   end;\n\nend;\nfunction isdight(a:char):boolean;\nbegin\n   if (48&lt;=ord(a)) and (ord(a)&lt;=57) then exit(true) else exit(false);\nend;\nprocedure rea(var a:longint);\nvar\n   ch:char;\n   s:string;\nbegin\n   ch:=' ';\n   while not(isdight(ch)) do read(ch);\n   s:='';\n   repeat\n      s:=s+ch;\n      read(ch);\n   until not(isdight(ch));\n   val(s,a);\nend;\nbegin\n{   assign(input,'p1459.in');\n   assign(output,'p1459.out');\n   reset(input);\n   rewrite(output);                    }\n   while not seekeof do\n   begin\n      fillchar(map,sizeof(map),0);\n      fillchar(e,sizeof(e),0);\n      fillchar(f,sizeof(f),0);\n      fillchar(list,sizeof(list),0);\n      fillchar(d,sizeof(d),0);\n      fillchar(b,sizeof(b),false);\n      rea(n);\n      for i:=-1 to n do pre[i]:=i;\n      rea(np);\n      rea(nc);\n      rea(m);\n      for i:=1 to m do\n      begin\n        rea(src);\n        rea(t);\n        rea(map[src,t]);\n      end;\n      for i:=1 to np do\n      begin\n        rea(t);\n        rea(map[-1,t]);\n        e[t]:=map[-1,t];\n        f[-1,t]:=map[-1,t];\n        f[t,-1]:=-map[-1,t];\n      end;\n      for i:=1 to nc do\n      begin\n         rea(src);\n         rea(map[src,n]);\n      end;\n\n      hllp;\n      writeln(e[n]);\n   end;\n{   close(input);\n   close(output);     }\nend.\n<\/pre><\/p>\n","protected":false},"excerpt":{"rendered":"<p>hllp\u5199\u5230\u6700\u540e\u5199\u6210\u9884\u7559\u63a8\u8fdb\u4e86\u2026\u2026 Program P1459; var n,np,nc,m,i,j,src, [&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":[113],"class_list":["post-140","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-network_flow"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>POJ 1459\uff08\u9884\u7559\u63a8\u8fdb\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=140\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"POJ 1459\uff08\u9884\u7559\u63a8\u8fdb\uff09 - nike0good\" \/>\n<meta property=\"og:description\" content=\"hllp\u5199\u5230\u6700\u540e\u5199\u6210\u9884\u7559\u63a8\u8fdb\u4e86\u2026\u2026 Program P1459; 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