{"id":265,"date":"2012-11-15T08:22:00","date_gmt":"2012-11-15T00:22:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/170"},"modified":"2012-11-15T08:22:00","modified_gmt":"2012-11-15T00:22:00","slug":"poj_3461_pattern_matching_ampamp_coverage_function","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=265","title":{"rendered":"POJ 3461(\u6a21\u5f0f\u5339\u914d\u6570&\u8986\u76d6\u51fd\u6570\uff09"},"content":{"rendered":"\n\n\n
\n
Language:\n\n\n\n
Time Limit:<\/strong> 1000MS<\/td>\n <\/td>\nMemory Limit:<\/strong> 65536K<\/td>\n<\/tr>\n
Total Submissions:<\/strong> 14051<\/td>\n <\/td>\nAccepted:<\/strong> 5667<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Description<\/p>\n

\n

\u7ed9\u51fa\u4e24\u4e2a\u5b57\u7b26\u4e32W\u548cT\uff0c\u6c42T\u4e2d\u6709\u51e0\u4e2aW\u5b50\u4e32\u3002<\/p>\n<\/div>\n

Input<\/p>\n

\n

\u7b2c\u4e00\u884c\u4e3a\u6570\u636e\u6570.<\/p>\n

\u6bcf\u7ec4\u6570\u636e\u6709\u4e24\u884cW\u548cT\uff0c\u8868\u793a\u6a21\u5f0f\u4e32\u548c\u539f\u59cb\u4e32.<\/p>\n<\/div>\n

Output<\/p>\n

\n

\u5bf9\u6bcf\u7ec4\u6570\u636e\uff0c\u6bcf\u884c\u4e00\u4e2a\u6570\uff0c\u8868\u793a\u5339\u914d\u6570.<\/p>\n<\/div>\n

Sample Input<\/p>\n

3\nBAPC\nBAPC\nAZA\nAZAZAZA\nVERDI\nAVERDXIVYERDIAN<\/pre>\n
Sample Output<\/p>\n
1\n3\n0<\/pre>\n
Source<\/p>\n
\nBAPC 2006 Qualification<\/a><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n<\/span><\/p>\n
\u8fd9\u9898\u7528\u5230\u4e86KMP\u4e2d\u7684\u8986\u76d6\u51fd\u6570\u2014\u2014P<\/span><\/p>\n
P\u548cNext\u7684\u533a\u522b\u662fP\u662f\u6307\u5305\u62ec\u5f53\u524d\u70b9\u7684\u6700\u957f\u8986\u76d6\u957f\u5ea6\uff0cNext\u662f\u6307\u5339\u914d\u5230i\uff0c\u82e5\u4e0d\u6ee1\u8db3\u6761\u4ef6\uff0c\u5c06\u5176\u632a\u5230Next[i]\uff0c(P[i]<>P[next[i]],P\u8868\u6a21\u5f0f\u4e32\uff09<\/span><\/p>\n
\u8bc1\u660e\uff1a<\/span><\/p>\n
\"\"
\n<\/span><\/p>\n

\n<\/span><\/p>\n
\u4e4b\u540e\u8fdb\u884c\u67e5\u627e\uff0c\u82e5\u67e5\u5230(j=m),\u5219j=P[j]\uff08\u4e3a\u4e86\u4e0b\u4e00\u6b21\u67e5\u627e\uff09<\/span><\/p>\n

\n<\/span><\/p>\n
<\/span><\/p>\n
Program Poj3461;\nconst\n   maxm=10000;\n   maxn=1000000;\nvar\n   tt,n,m,i,j:longint;\n   a,b:ansistring;\n   P:array[1..maxn] of longint;\nfunction kmp:longint;\nvar\n   n,m,i,j:longint;\nbegin\n   kmp:=0;\n\n   n:=length(a);m:=length(b);\n   P[1]:=0;j:=0;\n   for i:=2 to m do\n   begin\n      while (j>0) and (b[j+1]<>b[i]) do j:=p[j];\n      if (b[j+1]=b[i]) then inc(j);\n      p[i]:=j;\n   end;\n\n   j:=0;\n   for i:=1 to n do\n   begin\n      while (j>0) and (b[j+1]<>a[i]) do j:=p[j];\n      if (b[j+1]=a[i]) then inc(j);\n      if j=m then\n      begin\n         inc(kmp);\n         j:=p[j];\n      end;\n\n   end;\n\n\nend;\nbegin\n   readln(tt);\n   while (tt>0) do\n   begin\n     readln(b);\n     readln(a);\n\n     writeln(kmp);\n\n     dec(tt);\n   end;\n\nend.<\/pre>\n<\/p>\n

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

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