{"id":263,"date":"2012-11-14T15:40:00","date_gmt":"2012-11-14T07:40:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/168"},"modified":"2012-11-14T15:40:00","modified_gmt":"2012-11-14T07:40:00","slug":"poj_3080_longest_common_substring","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=263","title":{"rendered":"POJ 3080(\u6700\u957f\u516c\u5171\u5b50\u4e32\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> 8767<\/td>\n <\/td>\nAccepted:<\/strong> 3688<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Description<\/p>\n

\n\u7ed9\u51fa\u82e5\u5e72\u4e2a\u57fa\u56e0\u4e32\uff08\u7531'A','T','S','C'\u6784\u6210\uff09\uff0c\u8bf7\u627e\u51fa\u6700\u957f\u516c\u5171\u5b50\u4e32\u3002<\/div>\n

Input<\/p>\n

\n\u7b2c\u4e00\u884c\u4e3a\u6570\u636e\u6570\u3002<\/div>\n
\n\u5bf9\u6bcf\u7ec4\u6570\u636e\uff1a\u7b2c\u4e00\u884c\u4e3a\u5b57\u7b26\u4e32\u7684\u4e2a\u6570m(2 <= m <= 10)<\/span><\/div>\n
\n                        \u4e4b\u540em\u884c\uff0c\u6bcf\u884c\u4e00\u4e2a\u57fa\u56e0\u4e32\uff08\u6709\u4e14\u4ec5\u670960\u4e2a\u5b57\u6bcd\uff09<\/span><\/div>\n
\n\n<\/div>\n

Output<\/p>\n

\n\u5bf9\u6bcf\u7ec4\u6570\u636e\uff0c\u627e\u51fa\u6700\u957f\u516c\u5171\u5b50\u4e32\uff0c\u5982\u679c\u957f\u5ea6\u5c0f\u4e8e3\uff0c\u8bf7\u8f93\u51fa "no significant commonalities" \uff0c\u5426\u5219\u8f93\u51fa\u6700\u957f\u7684\u5b57\u7b26\u4e32\uff0c\u82e5\u6709\u591a\u4e2a\u7b54\u6848\uff0c\u8f93\u51fa\u5b57\u5178\u5e8f\u6700\u5c0f\u7684\u3002<\/div>\n

Sample Input<\/p>\n

3\n2\nGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATA\nAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n3\nGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATA\nGATACTAGATACTAGATACTAGATACTAAAGGAAAGGGAAAAGGGGAAAAAGGGGGAAAA\nGATACCAGATACCAGATACCAGATACCAAAGGAAAGGGAAAAGGGGAAAAAGGGGGAAAA\n3\nCATCATCATCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC\nACATCATCATAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\nAACATCATCATTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT<\/pre>\n
Sample Output<\/p>\n
no significant commonalities\nAGATAC\nCATCATCAT\n<\/pre>\n
Source<\/p>\n
\nSouth Central USA 2006<\/a><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u679a\u4e3e\u5b57\u7b26\u4e32\u66f4\u65b0\u7b54\u6848\uff0c\u7528kmp\u7b97\u6cd5\u8fdb\u884c\u5339\u914d\u3002<\/span><\/p>\n

\n<\/span><\/p>\n
<\/span><\/p>\n
Program BlueJeans;\nconst\n   maxn=60;\n   maxm=10;\nvar\n   tt,i,j,k,n,m:longint;\n   a:array[1..maxm] of string;\n   next:array[1..maxn] of longint;\n   p,ans:string;\n   flag:boolean;\n\nfunction kmp(a,s:string):boolean;\nvar\n   i,j,n:longint;\nbegin\n   n:=length(a);\n\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); inc(j);\n         if (a[i]<>a[j]) then next[i]:=j else next[i]:=next[j];\n      end else j:=next[j];\n   end;\n\n   j:=0; i:=0;\n   while (i<=maxn) and (j<=n) do\n   begin\n      if (j=0) or (a[j]=s[i]) then\n      begin\n         inc(i); inc(j);\n  \/\/       if (j=n) then exit(true);\n      end else j:=next[j];\n   end;\n\n   if j>n then exit(true);\n   exit(false);\n\n\nend;\nfunction compare(a,b:string):boolean;\nvar\n   i,n,m:longint;\nbegin\n   n:=length(a); m:=length(b);\n   if (n<>m) then exit(n<m);\n   for i:=1 to n do if (a[i]<>b[i]) then exit(ord(a[i])>ord(b[i]));\n   exit(false);\nend;\nbegin\n   readln(tt);\n   while (tt>0) do\n   begin\n      ans:='';\n      readln(m);\n      for i:=1 to m do readln(a[i]);\n\n      for i:=1 to maxn do\n         for j:=i to maxn do\n         begin\n            p:=copy(a[1],i,j-i+1);\n            flag:=false;\n            for k:=2 to m do\n            begin\n               if not(kmp(p,a[k])) then begin flag:=true; break; end;\n            end;\n            if not(flag) and (compare(ans,p)) then ans:=p;\n         end;\n\n      if length(ans)<3 then writeln('no significant commonalities')\n      else writeln(ans);\n\n\n\n\n      dec(tt);\n   end;\nend.\n<\/pre>\n<\/p>\n
\n<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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