{"id":262,"date":"2012-11-14T13:42:00","date_gmt":"2012-11-14T05:42:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/167"},"modified":"2012-11-14T13:42:00","modified_gmt":"2012-11-14T05:42:00","slug":"poj_2752_does_not_meet_the_p_i_amplt_ampgt_p_next_i_next_function","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=262","title":{"rendered":"POJ 2752(\u4e0d\u6ee1\u8db3P[i]<>P[next[i]] \u7684next\u51fd\u6570\uff09"},"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> 8682<\/td>\n <\/td>\nAccepted:<\/strong> 4112<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Description<\/p>\n

\n\u7ed9\u5b9a\u4e00\u4e2a\u5b57\u7b26\u4e32P\uff0c\u6c42\u5b83\u6240\u6709\u7684\u6ee1\u8db3P[1..i]\u5230P[n-i+1..n]\u7684i.<\/div>\n

Input<\/p>\n

\n\u6570\u636e\u6709\u82e5\u5e72\u884c<\/div>\n
\n\u6bcf\u884c\u4e3a\u4e00\u7ec4\u6570\u636eP,1 <= Length of P <= 400000. \n<\/div>\n

Output<\/p>\n

\n\u6bcf\u884c\u4e00\u7ec4\u6570\u636e\uff0c\u6309\u6570\u5b57\u5347\u5e8f\u8f93\u51fa\u6240\u6709\u7684i. <\/div>\n

Sample Input<\/p>\n

ababcababababcabab\naaaaa\n<\/pre>\n
Sample Output<\/p>\n
2 4 9 18\n1 2 3 4 5\n<\/pre>\n
Source<\/p>\n
\nPOJ Monthly--2006.01.22<\/a>,Zeyuan Zhu<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n<\/span><\/p>\n
\u8981\u8003\u8651KMP\u4e2dNext\u51fd\u6570\u7684\u6027\u8d28-P[next[i]]<>P[i]<\/span><\/p>\n
\u5982\u679c\u8fd9\u4e2a\u6761\u4ef6\u4e0d\u6ee1\u8db3\u5462\uff1f<\/span><\/p>\n
\u5148\u5728\u5b57\u7b26\u4e32\u540e\u63d2\u5165\u4e00\u4e2a'.'\uff0c\u8868\u793a'.'\u524d\u7684\u5faa\u73af\uff0c\u8fd9\u6837\u5c31\u80fd\u89c4\u907f\u8fd9\u4e00\u70b9\uff08\u56e0\u4e3a\u2018.\u2019\u4e0d\u4f1a\u4e0e\u4efb\u4f55\u5b57\u6bcd\u91cd\u5408\uff09<\/span><\/p>\n
\u518d\u628a\u540e\u9762\u90a3\u4e2aif\u4ece\u53e5\u5220\u6389(\u5b83\u53ea\u80fd\u8df3\u8fc7\u4e00\u4e9b-\u975e\u5168\u90e8\u7684-P[next[i]]<>P[i]\u7684\u60c5\u51b5\uff0c\u56e0\u4e3a.\u540e\u9762\u53ef\u80fd\u51fa\u73b0\u4e24\u6b21'a'<\/span><\/span><\/p>\n
\u8fd9\u6837\u5c31\u53ef\u4ee5\u4e86\uff0c\u6700\u540e\u628a\u7b54\u6848\uff08\u7531\u4e8e\u4e0d\u8003\u8651a[i],\u53ea\u8003\u8651\u524d\u9762\u5faa\u73af\u8282\u7684\u957f\u5ea6\uff0c\u6545-1\uff09<\/span><\/p>\n

\n<\/span><\/p>\n
<\/span><\/p>\n
Program SeekName;\nconst\n    maxn=400000;\nvar\n   n,i,j,size:longint;\n   a:ansistring;\n   ans,next:array[1..maxn] of longint;\n\nbegin\n   while not seekeof do\n   begin\n      readln(a); a:=a+'.';\n      n:=length(a);\n      j:=0;next[1]:=0;i:=1;\n      while (i<n) do\n      begin\n         if (j=0) or (a[i]=a[j]) then\n         begin\n            inc(i);\n            inc(j);\n         \/\/   if (a[i]<>a[j]) then next[i]:=j else next[i]:=next[j];\n            next[i]:=j;\n         end else j:=next[j];\n      end;\n      size:=0; j:=n;\n      repeat\n         inc(size);\n         ans[size]:=j-1;\n         j:=next[j];\n      until j<=1;\n\n\n      write(ans[size]);\n      for i:=size-1 downto 1 do write(' ',ans[i]);\n      writeln;\n\n\n\n   end;\n\nend.\n<\/pre>\n<\/p>\n

\n<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
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