{"id":268,"date":"2012-11-15T17:44:00","date_gmt":"2012-11-15T09:44:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/173"},"modified":"2012-11-15T17:44:00","modified_gmt":"2012-11-15T09:44:00","slug":"poj_2190_analog_strategy","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=268","title":{"rendered":"POJ 2190(\u6a21\u62df\u7b56\u7565\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> 13962<\/td>\n <\/td>\nAccepted:<\/strong> 4898<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\nDescription<\/p>\n

\nISBN\u7801\u6ee1\u8db3\uff1a(10*A1+9*A2+..+1*A10) mod 11=0
\nA10\u662f\u6548\u9a8c\u7801\uff0c\u82e5\u5b83\u4e3a10\uff0c\u5219\u4ee5X\u4ee3\u66ff\uff0c\u5176\u5b83\u4f4d\u90fd\u4e3a0..9\u7684\u6570\u5b57
\n \u73b0\u5728\u7ed9\u4f60\u4e00\u4e2a\u6548\u9a8c\u7801\uff0c\u4f46\u662f\u5176\u4e2d\u4e00\u4f4d\u770b\u4e0d\u6e05\uff0c\u8bf7\u6c42\u51fa\u8fd9\u4e00\u4f4d\u3002\n<\/div>\n

\nInput<\/p>\n

\n1\u884cISBN\u7801\uff0c\u2018?'\u8868\u793a\u770b\u4e0d\u6e05\n<\/div>\n

\nOutput<\/p>\n

\n\u8f93\u51fa\u90a3\u4e00\u4f4d\uff0c\u65e0\u89e3\u8f93-1.\n<\/div>\n

\nSample Input<\/p>\n

15688?111X\n<\/pre>\n
\nSample Output<\/p>\n
1\n<\/pre>\n
\nSource<\/p>\n
\nUSACO 2003 Fall Orange<\/a><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u8fd9\u9898\u5c31\u662f\u6a21\u62df\uff0c\u6a21\u62df\u6700\u91cd\u8981\u7684\u662f\u7ec6\u8282\uff0c\u672c\u9898值\u5f97\u6ce8\u610f\u7684\u7ec6\u8282\uff1a<\/span><\/p>\n
1.\u67d01\u4f4d\u4e3a0\u7684\u60c5\u51b5.<\/span><\/p>\n
2.\u5176\u5b83\u4f4d\u7684\u4e58\u79ef\u548c\u662f11\u7684\u500d\u6570.<\/span><\/p>\n
3.\u67d01\u4f4d\u4e3aX\u7684\u60c5\u51b5.<\/span><\/p>\n
4.\u65e0\u89e3.<\/span><\/p>\n
5.\u5176\u5b83\u4f4d\u7684\u4e58\u79ef\u548c\u5305\u542b'X'.<\/span><\/p>\n
Program ISBN;\nconst\n   n=10;\n   F=11;\nvar\n   s:string;\n   i,p,ans:longint;\nbegin\n   ans:=0;\n   readln(s);\n   if s[n]='X' then s[n]:=char(58);\n\n   p:=pos('?',s);\n\n   for i:=1 to n do\n      if i<>p then inc(ans,(ord(s[i])-48)*(10-i+1));\n   \/\/ ans +p*? mod 11 =0\n   ans:=ans mod F;\n   ans:=(F-ans) mod F;\n\n   for i:=0 to n do\n   begin\n      if ((11-p)*i) mod F=ans then\n      begin\n         if (p=n) and (i=10) then begin writeln('X'); halt; end;\n         if (i<10) then begin writeln(i);   halt; end;\n      end;\n   end;\n\n   writeln('-1');\n\nend.\n<\/pre>\n<\/p>\n

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