{"id":197,"date":"2012-10-20T13:44:00","date_gmt":"2012-10-20T05:44:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/102"},"modified":"2012-10-20T13:44:00","modified_gmt":"2012-10-20T05:44:00","slug":"series_ranging_from_the_dp_insert_the_e","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=197","title":{"rendered":"\u4e0d\u7b49\u6570\u5217 (Dp\u63d2\u5165e\uff09"},"content":{"rendered":"

<\/span><\/p>\n

\u3010\u9898\u76ee\u63cf\u8ff0\u3011<\/p>\n

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 <\/p>\n

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

\u7b2c\u4e00\u884c2\u4e2a\u6574\u6570n,k\u3002<\/p>\n

 <\/p>\n

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

\u4e00\u4e2a\u6574\u6570\u8868\u793a\u7b54\u6848\u3002<\/p>\n

 <\/p>\n

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

5 2<\/p>\n

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

66<\/p>\n

\u3010\u6570\u636e\u8303\u56f4\u3011<\/p>\n

\u5bf9\u4e8e30%\u7684\u6570\u636e\uff1an <= 10<\/p>\n

\u5bf9\u4e8e100%\u7684\u6570\u636e\uff1ak < n <= 1000\uff0c <\/p>\n

<\/p>\n


\n<\/span><\/p>\n


\n<\/span><\/p>\n

F[i,j]=f[i-1,j](j+1)+f[i-1][j-1](i-j)   i\u8868\u793a\u4ece1\u5230i\u7684\u6570   j\u8868\u793a\u5c0f\u4e8e\u53f7\u4e2a\u6570<\/span><\/p>\n

          \u63d2\u5165\u6700\u5927\u6570e\u540e\u6dfb\u4e86\u4e00\u4e2a><\/span><\/p>\n

          \u6216\u8005\u4e00\u4e2a<\u7684\u6570\u91cf<\/span><\/p>\n


\n<\/span><\/p>\n

const\n   maxn=1000;\nvar\n   f:array[0..1000,0..1000] of longint;\n   n,i,j,k:longint;\nbegin\n   assign(input,'num.in');\n   assign(output,'num.out');\n   reset(input);\n   rewrite(output);\n   read(n,k);\n   if (k>n-1-k) then k:=n-1-k;\n   for i:=1 to n do\n   begin\n      f[i,0]:=1;\n      f[i,i-1]:=1;\n   end;\n   for i:=2 to n do\n      for j:=1 to k do\n         f[i,j]:=(f[i-1,j]*(j+1)+f[i-1,j-1]*(i-j)) mod 2012;\n   writeln(f[i,k]);\n   close(input);\n   close(output);\nend.\n<\/pre>\n
\n\u53e6\u9644 \u66b4\u641c%30\u6570\u636e\u7684\u7248\u672c<\/p>\n
var\n   b:array[1..10] of boolean;\n   f:array[0..10] of longint;\n   n,k,i:longint;\nprocedure dfs(l,x,father:longint);\nvar\n   i:longint;\nbegin\n   if l=n then begin inc(f[x]); exit; end;\n   for i:=1 to n do\n   if not(b[i]) then\n   begin\n      b[i]:=true;\n      if father<i then dfs(l+1,x+1,i) else\n      dfs(l+1,x,i);\n      b[i]:=false;\n   end;\n\nend;\nbegin\n   readln(n,k);\n   fillchar(b,sizeof(b),false);\n   fillchar(f,sizeof(f),0);\n   for i:=1 to n do\n   begin\n      b[i]:=true;\n      dfs(1,0,i);\n      b[i]:=false;\n   end;\n   for i:=0 to n-1 do write(f[i],' ');\n\n\nend.\n<\/pre>\n<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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