{"id":700,"date":"2009-08-30T12:41:34","date_gmt":"2009-08-30T04:41:34","guid":{"rendered":"http:\/\/blog.axqd.net\/?p=700"},"modified":"2009-08-30T12:41:34","modified_gmt":"2009-08-30T04:41:34","slug":"google-code-jam-2009-practise","status":"publish","type":"post","link":"https:\/\/blog.axqd.net\/?p=700","title":{"rendered":"Google Code Jam 2009 (Practise)"},"content":{"rendered":"<p><a href=\"https:\/\/blog.axqd.net\/2008\/07\/18\/google-code-jam-2008\/\" target=\"_blank\">\u53bb\u5e74\u505a\u4e86\u505aGoogle Code Jam\u7684\u5165\u56f4\u9898<\/a>\uff0c\u633a\u597d\u73a9\u7684\u3002\u4eca\u5e74\u65e9\u65e9\u7684\u5c31\u6536\u5230\u4e86\u90ae\u4ef6\uff0c\u5e76\u4e14\u8fd8\u9644\u4e0a\u4e86\u56db\u9053\u7ec3\u4e60\u9898\u3002<\/p>\n<p>1. [74%\/80%] Alien Number\uff1a\u7ed9\u5b9a\u6e90\u8bed\u8a00\u4ee5\u53ca\u76ee\u6807\u8bed\u8a00\uff0c\u8981\u6c42\u7ffb\u8bd1\u4e00\u4e2a\u6570\u5b57\u3002<\/p>\n<p>\u8fd9\u9898\u6309\u6700\u81ea\u7136\u7684\u601d\u8def\u5c31\u884c\u4e86\u3002\u4e3a\u65b9\u4fbf\u8d77\u89c1\uff0c\u628a\u6e90\u6570\u5b57\u5148\u8f6c\u6362\u6210\u5341\u8fdb\u5236\uff0c\u7136\u540e\u518d\u7528\u548c\u5341\u8fdb\u5236\u8f6c\u4e8c\u8fdb\u5236\u76f8\u540c\u7684\u8f97\u8f6c\u76f8\u9664\u6cd5\uff0c\u6c42\u5f97\u76ee\u6807\u6570\u5b57\u7684\u8868\u793a\u3002<\/p>\n<p>2. [80%\/84%] Always Turn Left\uff1a\u7ed9\u5b9a\u603b\u662f\u5de6\u8f6c\u7684\u89c4\u5219\u53ca\u5b9e\u9645\u8def\u7ebf\uff0c\u8981\u6c42\u5b9e\u9645\u7684\u8ff7\u5bab\u3002<\/p>\n<p>\u5982\u679c\u4f60\u8eab\u9677\u8ff7\u5bab\uff0c\u201c\u603b\u662f\u5de6\u8f6c\u201d\u7684\u89c4\u5219\uff0c\u6216\u8005\u8bf4\u201c\u624b\u4e0d\u79bb\u5899\uff0c\u6478\u7740\u5899\u8d70\u201d\u7684\u89c4\u5219\uff0c\u5174\u8bb8\u80fd\u6551\u4f60\u4e00\u547d\u3002<\/p>\n<p>\u5176\u5b9e\uff0c\u8fd9\u9053\u9898\u4e2d\uff0c\u6211\u4eec\u80fd\u5f97\u5230\u7684\u6240\u6709\u8baf\u606f\uff0c\u90fd\u5728\u6765\u56de\u8d70\u7684\u8def\u5f84\u91cc\u9762\u3002\u6240\u4ee5\u53ea\u8981\u8ddf\u7740\u8def\u5f84\u5b9e\u9645\u6765\u56de\u8d70\u4e00\u904d\uff0c\u5e76\u6cbf\u8def\uff0c\u603b\u7ed3\u8ff7\u5bab\u4fe1\u606f\uff0c\u6700\u540e\u5f97\u5230\u7684\u4fbf\u662f\u6574\u4e2a\u8ff7\u5bab\u3002<\/p>\n<p>\u5bf9\u4e8e\u5de6\u53f3\u8f6c\u53ca\u65b9\u5411\u7684\u8868\u793a\uff0c\u4e00\u5806if-else\uff0c\u65f6\u7a7a\u90fd\u574f\uff1b\u5f52\u7eb3\u5230\u4e00\u4e2a\u8868\u91cc\u9762\u67e5\u8868\uff0c\u7a7a\u95f4\u6548\u7387\u4e5f\u4e0d\u9ad8\uff1b\u5176\u5b9e\u5c31\u56db\u4e2a\u65b9\u5411\uff0c\u5982\u679cNESW\u5206\u522b\u8868\u793a\u4e3a0123\u7684\u8bdd\uff0c\u7b80\u5355\u7684\u52a0\u51cf\u53d6\u6a21\uff0c\u5c31\u80fd\u5b9e\u73b0\u5de6\u53f3\u8f6c\u4e86\u3002\u81f3\u4e8ewalk through\u7684\u5750\u6807\u5904\u7406\uff0c\u9009\u62e9\u4e00\u4e2a\u7b80\u5355\u7684\u95ed\u5305\u6700\u4e3a\u7406\u60f3\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5728\u5904\u7406\u8def\u5f84\u7684\u65f6\u5019\uff0c\u7ef4\u62a4\u4e00\u4e2ax\u3001y\u5750\u6807\u7684\u6700\u5927\u3001\u6700\u5c0f\u503c\uff0c\u4ee5\u4fbf\u4e8e\u6700\u540e\u8f93\u51fa\u8ff7\u5bab\u3002<\/p>\n<p>\u5728\u8f93\u51fa\u8ff7\u5bab\u7684\u65f6\u5019\uff0c\u4e0d\u7528\u5148\u5b58\u50a8\u90a3\u5f20\u8f6c\u6362\u8868\uff0c\u800c\u76f4\u63a5\u628aYES\u5f53\u62101\uff0cNO\u5f53\u62100\uff0c\u4f5c\u4e3a4\u4f4d\u7684\u4e8c\u8fdb\u5236\u6570\uff0c\u518d\u8868\u793a\u4e3a16\u8fdb\u5236\uff0c\u521a\u597d\u5c31\u662f\u90a3\u5f20\u8868\u3002<\/p>\n<p>==== \u4ece\u9898\u76ee\u524d\u62ec\u53f7\u91cc\u8868\u793a\u7684\u4eba\u4eec\u7684\u6210\u529f\u7387\u4e0a\u6765\u770b\uff0c\u524d\u4e24\u9898\u6bd4\u8f83\u7b80\u5355\uff0c\u540e\u4e24\u9898\u6bd4\u8f83\u56f0\u96be ====<\/p>\n<p>3. [68%\/49%] Egg Drop\uff1a\u7ed9\u5b9a\u67d0\u4e2a\u53ef\u89e3\u6254\u86cb\u95ee\u9898\u7684\u4e09\u4e2a\u53c2\u91cf\uff0c\u5728\u4fdd\u6301\u53ef\u89e3\u7684\u60c5\u51b5\u4e0b\uff0c\u6c42\u6bcf\u4e2a\u53c2\u91cf\u7684\u6781\u5927\u503c\u6216\u6781\u5c0f\u503c<\/p>\n<p>\u8fd9\u9053\u9898\u6709\u5f88\u81ea\u7136\u7684\u601d\u8def\uff0c\u90a3\u4fbf\u662fFmax\u7684\u9012\u63a8\u5f0f\uff1a<\/p>\n<p>\u8bbe\u60f3\u73b0\u5728\u5728\u7b2c i \u5c42\u6254\u86cb\uff0c\u90a3\u4e48\u7b2c i \u5c42\u6254\u4e86\uff0c\u5c31\u80fd\u786e\u5b9a\u72b6\u6001\uff0c\u56e0\u6b64\u672c\u8eab\u7b97\u4e00\u5c42 ( 1 )\uff1b<br \/>\n\u5982\u679c\u86cb\u6ca1\u788e\uff0c\u5f80\u4e0a\u9a8c\uff0c\u6700\u591a\u8fd8\u80fd\u9a8cF( D \u2013 1, B )\u5c42[ \u56e0\u4e3a\u7b2c i \u5c42\u6254\u4e86\u4e00\u6b21\uff0cD\u51cf1\uff1b\u86cb\u6ca1\u788e\uff0cB\u4e0d\u53d8 ]\uff1b<br \/>\n\u5982\u679c\u86cb\u788e\u4e86\uff0c\u5f80\u4e0b\u9a8c\uff0c\u6700\u591a\u8fd8\u80fd\u9a8cF( D \u2013 1, B \u2013 1 )\u5c42[ \u56e0\u4e3a\u7b2c i \u5c42\u6254\u4e86\u4e00\u6b21\uff0cD\u51cf1\uff1b\u86cb\u788e\u4e86\uff0cB\u4e5f\u51cf1 ]\u3002<\/p>\n<p>\u7531\u4e8e\u6bcf\u6b21\u9a8c\u8bc1\uff0c\u86cb\u53ea\u80fd\u5904\u4e8e\u788e\u6216\u4e0d\u788e\u72b6\u6001\u4e2d\u7684\u4e00\u79cd\uff0c\u6240\u4ee5\u4e8c\u8005\u5e76\u4e0d\u4e92\u76f8\u5f71\u54cd\u3002\u6545\uff1a<\/p>\n<p>F(D, B) = 1 + F( D \u2013 1, B ) + F( D \u2013 1, B \u2013 1 )<\/p>\n<p>\u63a5\u4e0b\u6765\u5982\u4f55\u8ba1\u7b97\u8fd9\u4e2a\u9012\u63a8\u5f0f\uff0c\u662f\u4e2a\u95ee\u9898\u3002\u5982\u679c\u8fd9\u4e2a\u95ee\u9898\u89e3\u51b3\u4e86\uff0c\u90a3\u4e48\u8981\u627e\u5230\u6700\u5c0f\u7684D\u548cB\uff0c\u76f4\u63a5\u67e5\u8868\u65e2\u53ef\u3002<\/p>\n<p>\u5bb9\u6613\u770b\u51fa\uff0c\u9012\u63a8\u5f0f\u4e2d\u6709\u5927\u91cf\u91cd\u590d\u7684\u5b50\u95ee\u9898\uff0c\u52a8\u6001\u89c4\u5212\u5e94\u8be5\u6548\u679c\u4e0d\u9519\u3002\u4e0d\u8fc7\uff0c\u6211\u4eec\u8fd8\u662f\u5148\u6765\u770b\u770b\u6570\u636e\u81a8\u80c0\u901f\u5ea6\u5982\u4f55\uff1a<\/p>\n<p>[B]<br \/>\n1 3 7 15<br \/>\n1 3 7 14<br \/>\n1 3 6 10<br \/>\n1 2 3 4\u00a0\u00a0 [D]<\/p>\n<p>\u5de6\u4e0a\u90e8\u5206\u4e0d\u7528\u8ba1\u7b97\uff0c\u5c31\u662f\u5bf9\u89d2\u7ebf\u4e0a\u7684\u6570\u5b57\uff0c\u56e0\u4e3a\u80fd\u6253\u788e\u7684\u6570\u91cf\uff0c\u5982\u679c\u8d85\u8fc7\u603b\u7684\u5b9e\u9a8c\u6b21\u6570\uff0c\u591a\u51fa\u6765\u7684\u8fd9\u90e8\u5206\u5c31\u6ca1\u610f\u4e49\u4e86\u3002\u6545\uff1a<\/p>\n<p>F( D, B ) = F( D, D ) if( B &gt; D )<\/p>\n<p>\u76f4\u63a5\u89c2\u5bdf\u5bf9\u89d2\u7ebf\u4e0a\u7684\u6570\u5b57\uff0c\u5bb9\u6613\u770b\u51fa\uff0c\u5bf9\u89d2\u7ebf\u4e0a\u7684\u6570\u5b57\u4e3a 2^D &#8211; 1\u3002<\/p>\n<p>\u5373\u4f7f\u6ca1\u6709\u770b\u51fa\u6765\uff0c\u4e5f\u53ef\u4ee5\u63a8\u51fa\u6765\u3002\u53ea\u7528\u7531F(D, B)\u7684\u9012\u63a8\u5f0f\u548c\u4e0a\u9762B&gt;D\u7684\u6027\u8d28\uff0c\u5f97\u51fa\u9012\u63a8\u5f0f A(n)=2A(n-1)+1\uff0c\u5e76\u6c42\u89e3\u65e2\u53ef\u3002<\/p>\n<p>\u7531\u6b64\u53ef\u89c1\uff0c\u8fd9\u5f20\u8868\u7684\u6570\u5b57\u81a8\u80c0\u901f\u5ea6\u76f8\u5f53\u5feb(2^n)\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u5f97\u5145\u5206\u5229\u7528\u4e00\u4e2a\u5f88\u4e0d\u8d77\u773c\u7684\u6761\u4ef6\uff0c\u90a3\u4fbf\u662fF\u67092^32\u7684\u5927\u5c0f\u9650\u5236\u3002<\/p>\n<p>B\u518d\u5927\uff0c\u5728\u5e94\u7528\u4e0a\u9762B&gt;D\u7684\u6027\u8d28\u540e\uff0c\u4e5f\u4e0d\u4f1a\u8d85\u8fc732\u3002\u6574\u5f20\u8868\u7684\u7eb5\u5411\u9ad8\u5ea6\u5c31\u9650\u5236\u5f97\u5f88\u5c0f\u4e86\u3002<\/p>\n<p>\u4f46\u6574\u5f20\u8868\u7684\u6a2a\u5411\u9ad8\u5ea6\u4f9d\u7136\u53ef\u4ee5\u5f88\u5927\uff0c\u6bd4\u5982F( 2000000000, 1 )\uff0c\u8fd9\u79cd\u60c5\u51b5\u5373\u4f7f\u52a8\u6001\u89c4\u5212\u4f1a\u5f88\u5403\u82e6\u5934\u3002<\/p>\n<p>\u89c2\u5bdf\u6bcf\u4e00\u5217\uff0c\u90fd\u662f\u4ece D ~ (2 ^ D \u2013 1)\uff0c\u4e4b\u95f4\u7684\u6bcf\u4e2a\u6570\u7684\u5dee\u503c\uff0c\u521a\u597d\u662f\u6768\u8f89\u4e09\u89d2\u3002<\/p>\n<p>1&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;0<br \/>\n1 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01&#8212;&#8212;&#8212;&#8212;-1<br \/>\n1 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02 \u00a0 \u00a0 \u00a0 1&#8212;&#8212;&#8212;&#8211;2<br \/>\n1 \u00a0 \u00a0 \u00a0 \u00a03 \u00a0 \u00a0 \u00a0 \u00a0 3 \u00a0 \u00a0 \u00a0 \u00a01&#8212;&#8212;-3<br \/>\n1 \u00a0 \u00a0 \u00a0 \u00a04 \u00a0 \u00a0 \u00a0 \u00a0 6 \u00a0 \u00a0 \u00a0 \u00a04 \u00a0 \u00a0 \u00a0 \u00a01&#8212;-4<br \/>\n0Cr4 1Cr4 2Cr4 3Cr4 4Cr4<\/p>\n<p>15 \u2013 1 = 14<br \/>\n14 \u2013 4 = 10<br \/>\n10 \u2013 6 = 4<\/p>\n<p>\u6240\u4ee5\uff0c\u4eceD\u5f00\u59cb\u5f80\u4e0a\u7d2f\u52a0\u5404\u4e2a\u7ec4\u5408\u6570\uff0c\u65e2\u53ef\u5f97\u51fa\u67d0\u4e00\u4f4d\u7684\u503c\u3002\u800c\u8fd9\u4e2a\u7d2f\u52a0\u8fc7\u7a0b\uff0c\u4e00\u65e6\u5927\u4e8e2 ^ 32\u4fbf\u53ef\u9000\u51fa\u3002<\/p>\n<p>\u7b97\u51fa\u4e86Fmax\uff0cBmin\u53ef\u4ee5\u76f4\u63a5\u6328\u4e2a\u627e\uff0c\u56e0\u4e3a\u8868\u7684\u7eb5\u5411\u9ad8\u5ea6\u6709\u9650\u3002\u800cDmin\uff0c\u5219\u9700\u8981\u4e00\u4e2a\u7b80\u5355\u7684\u6298\u534a\u67e5\u627e\uff0c\u4ee5\u5e94\u5bf9F( 2000000000, 1 )\u7c7b\u4f3c\u7684\u60c5\u51b5\u3002<\/p>\n<p>4. [64%\/31%] Shopping Plan\uff1a\u7ed9\u5b9a\u5546\u5e97\u3001\u6cb9\u8d39\u548c\u8981\u4e70\u7684\u4e1c\u897f\uff0c\u6c42\u6700\u4f4e\u82b1\u8d39<\/p>\n<p>31%\u7684\u5927\u6570\u636e\u96c6\u901a\u8fc7\u7387\uff0c\u53ef\u89c1\u8fd9\u9053\u9898\u7684\u65f6\u95f4\u6216\u8005\u7a7a\u95f4\u590d\u6742\u5ea6\u6bd4\u8f83\u9ad8\u3002<\/p>\n<p>\u8fd9\u9053\u9898\u4e4d\u770b\u4e4b\u4e0b\uff0c\u5bb9\u6613\u8ba9\u4eba\u60f3\u8d77Dijkstra\u7b97\u6cd5[<a href=\"http:\/\/www.people.com.cn\/GB\/it\/48\/298\/20020917\/824179.html\" target=\"_blank\">\u738b\u9009\u8c8c\u4f3c\u8fd8\u8c08\u8bba\u8fc7Dijkstra\u8fd9\u4e2a\u4eba<\/a>]\u3002\u4f46\u6211\u5f88\u96be\u60f3\u5230\u7b80\u5355\u7684\u4e00\u4e2a\u6570\uff0c\u6765\u6307\u5f81\u5f53\u524d\u9009\u62e9\u7684\u4f18\u52a3\u3002\u56e0\u4e3a\u8981\u8003\u8651\u7684\u56e0\u7d20\uff0c\u5b9e\u5728\u5f88\u591a\uff0c\u79bb\u5bb6\u7684\u8fdc\u8fd1\u3001\u5f53\u524d\u8d2d\u4e70\u7269\u7684\u4ef7\u683c\u3001\u8def\u5f84\u3001\u8fd8\u6709\u4e70\u4e86\u662f\u5426\u9700\u8981\u7acb\u523b\u56de\u5bb6\u7b49\u7b49\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u6700\u4f18\u5b50\u7ed3\u6784\u7684\u5bfb\u627e\uff0c\u4e5f\u9887\u4e3a\u56f0\u96be\u3002\u56e0\u4e3a\u5bb9\u6613\u7406\u89e3\uff0c\u4e70abcd\u7684\u6700\u4f73\u8def\u5f84\u4e0d\u4e00\u5b9a\u5305\u62ec\u4e70abc\u7684\u6700\u4f18\u8def\u5f84\u3002<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4e0d\u5f97\u4e0d\u589e\u5f3a\u6761\u4ef6\u3002\u6211\u4eec\u4ee5a. \u4ece\u67d0\u4e2a\u5546\u5e97\u51fa\u53d1\uff0cb. \u4e70\u5b8c\u67d0\u4e9b\u5546\u54c1\uff0cc. \u5e76\u4e14\u5f53\u524d\u662f\u5426\u9700\u8981\u56de\u5bb6\u4e3a\u57fa\u51c6\u8ba1\u7b97\u6700\u5c0f\u503c\u3002<\/p>\n<p>\u8fd9\u91cc\u9762\u4f9d\u7136\u53ef\u4ee5\u770b\u51fa\uff0c\u6709\u5927\u91cf\u7684\u91cd\u590d\u5b50\u95ee\u9898\uff0c\u53ef\u4ee5\u52a8\u6001\u89c4\u5212\u3002<\/p>\n<p>\u6211\u4eec\u904d\u5386\u5f53\u524d\u5546\u5e97\u91cc\u80fd\u4e70\u5230\u7684\u5e76\u4e14\u5f53\u524d\u9700\u8981\u8d2d\u4e70\u7684\u5546\u54c1\uff0c\u4e70\u4e4b\uff0c\u7136\u540e\u518d\u904d\u5386\u6240\u6709\u5546\u5e97\u4f5c\u4e3a\u4e0b\u4e00\u4e2a\u5546\u5e97\uff0c\u5e76\u4e14\u8003\u8651\u5f53\u524d\u4e70\u7684\u5546\u54c1\u662f\u5426\u9700\u8981\u7acb\u523b\u653e\u56de\u5bb6\u3002\u5982\u679c\u5df2\u7ecf\u4e70\u5b8c\u4e86\uff0c\u5219\u7acb\u523b\u56de\u5bb6\u3002<\/p>\n<p>\u8fd9\u91cc\u6709\u4e00\u4e2a\u60f3\u6cd5\u5f88\u8bf1\u60d1\uff0c\u90a3\u4fbf\u662f\u8d70\u8fc7\u7684\u5546\u5e97\u4fbf\u4e0d\u9700\u8981\u518d\u8d70\u3002\u56e0\u4e3a\u975eperishable\u7684\u5546\u54c1\u59cb\u7ec8\u80fd\u987a\u5e26\u5e26\u8d70\uff0cperishable\u7684\u5546\u54c1\u59cb\u7ec8\u8981\u7acb\u523b\u56de\u5bb6\uff0c\u4e5f\u4e0d\u9700\u8981\u7b2c\u4e8c\u6b21\u5149\u987e\u6765\u4e70\u3002\u6240\u4ee5\uff0c\u5982\u679c\u4ee5\u7a7a\u95f4\u6362\u65f6\u95f4\uff0c\u5728\u8fc7\u7a0b\u4e2d\u6392\u9664\u6389\u67d0\u4e9b\u5546\u5e97\uff0c\u6548\u679c\u5e94\u8be5\u4e0d\u9519\u3002\u4f46\u518d\u4ed4\u7ec6\u60f3\u60f3\u5c31\u4f1a\u53d1\u73b0\uff0c\u8fd9\u91cc\u7684\u7a7a\u95f4\u5f00\u9500\u5f88\u5927\uff0c\u5373\u4f7f\u7528bit set\uff0c\u4e5f\u9700\u89812 ^50\u3002\u800c\u6240\u6362\u6765\u7684\u65f6\u95f4\u5e76\u4e0d\u591a\uff0c\u56e0\u4e3a\u6211\u4eec\u4f9d\u7136\u5f97\u5904\u7406\u8fd9\u4e2a\u6bd4\u7279\u96c6\u3002<\/p>\n<p>\u8fd9\u6837\u5b9e\u73b0\u7684\u4e00\u4e2aperl\u811a\u672c\u7684\u6027\u80fd\u5982\u4e0b\uff1a<\/p>\n<p>[\u5c0f\u6570\u636e\u96c6 100 cases] &#8211; \u5de5\u4f5c\u5f88\u597d<\/p>\n<p>real\u00a0 0m0.297s<br \/>\nuser 0m0.260s<br \/>\nsys\u00a0 0m0.040s<\/p>\n<p>[\u5927\u6570\u636e\u96c6 20 cases] &#8211; \u4e25\u91cd\u8d85\u65f6<\/p>\n<p>real\u00a0\u00a0 35m4.110s<br \/>\nuser\u00a0 34m20.661s<br \/>\nsys\u00a0\u00a0\u00a0 0m42.387s<\/p>\n<p>0.297s\u5df2\u7ecf\u662f\u5bf9perl\u811a\u672c\u505a\u6027\u80fd\u8c03\u6821\u4e4b\u540e\u7684\u7ed3\u679c\uff0c\u6240\u4ee5\u4e0d\u66f4\u6539\u7b97\u6cd5\u6216\u8005\u66f4\u6539\u7f16\u7a0b\u8bed\u8a00\uff0c\u5f88\u96be\u6709\u6240\u63d0\u9ad8\u4e86\u3002\u8fd9\u91cc\u6211\u9009\u62e9\u4e86\u540e\u9762\u4e00\u79cd\u65b9\u5f0f\uff0c\u7528\u7eafC\u5b9e\u73b0\u4e86\u4e00\u4e2a\u76f8\u540c\u7684\u7b97\u6cd5\uff1a<\/p>\n<p>\u7531\u4e8eperl\u5904\u7406\u6587\u672c\u59cb\u7ec8\u8fd8\u662f\u65b9\u4fbf\u5f88\u591a\uff0c\u6240\u4ee5\u5148\u7528preprocess.pl\u811a\u672c\u628ainput\u6587\u672c\u89e3\u6790\u4e3a\u5229\u4e8eC\u89e3\u6790\u7684\u683c\u5f0f\u3002[\u8fd9\u91cc\u662f\u6bcf\u884c\u4e00\u4e2a\u6570\u5b57\uff0c\u5e76\u5904\u7406\u6389\u5546\u54c1\u540d\u79f0]<\/p>\n<p>\u7136\u540e\u7528\u7eafC\u7684\u7a0b\u5e8f\u8bfb\u5165\u5904\u7406\u540e\u7684\u6587\u672c\uff0c\u5e76\u8f93\u51fa\uff0c[ $gcc \u2013O3 run.c \u2013lm ]\u4e0b\u9762\u662f\u4e00\u4e9b\u6027\u80fd\u6570\u636e\uff1a<\/p>\n<p>[\u5c0f\u6570\u636e\u96c6 100 cases]<\/p>\n<p>real\u00a0\u00a0\u00a0 0m0.223s<br \/>\nuser\u00a0\u00a0 0m0.220s<br \/>\nsys\u00a0\u00a0\u00a0 0m0.004s<\/p>\n<p>\u5b8c\u5168\u6ca1\u6709\u7f13\u5b58\u7684\u7248\u672c\uff0c\u5df2\u7136\u6bd4perl\u7684\u8981\u597d\uff0c\u63a5\u4e0b\u6765\u4e3a\u7b97\u8def\u8d39\u7684\u51fd\u6570\u6dfb\u52a0\u7f13\u5b58\uff1a<\/p>\n<p>real\u00a0\u00a0\u00a0 0m0.128s<br \/>\nuser\u00a0\u00a0 0m0.124s<br \/>\nsys\u00a0\u00a0\u00a0 0m0.004s<\/p>\n<p>\u518d\u4e3a\u9012\u5f52\u51fd\u6570\u6dfb\u52a0\u7f13\u5b58\uff1a<\/p>\n<p>real\u00a0\u00a0\u00a0 0m0.004s<br \/>\nuser\u00a0\u00a0 0m0.004s<br \/>\nsys\u00a0\u00a0\u00a0 0m0.000s<\/p>\n<p>\u8fd9\u91cc\u5c31\u5df2\u7ecf\u76f8\u5f53\u7406\u60f3\u4e86\uff0c\u53ef\u4ee5\u9884\u89c1\u5927\u6570\u636e\u96c6\u6027\u80fd\u4e5f\u4e0d\u4f1a\u5dee\u3002<\/p>\n<p>[\u5927\u6570\u636e\u96c6 20 cases]<\/p>\n<p>real\u00a0\u00a0\u00a0 0m16.551s<br \/>\nuser\u00a0\u00a0 0m16.501s<br \/>\nsys\u00a0\u00a0\u00a0 0m0.048s<\/p>\n<p>16s\uff0c\u7b97\u662f\u5f88\u5b8c\u7f8e\u7684\u6027\u80fd\u4e86\u3002\u540c\u6837\u7684\u7b97\u6cd5\uff0c\u52a8\u6001\u811a\u672c\u548c\u7eafC\u8fd8\u662f\u6ca1\u6cd5\u6bd4\u554a\uff0c\u5475\u5475\u3002\u5373\u4f7f\u5728\u6781\u9650\u60c5\u51b5\uff0c50\u4e2a\u5546\u5e97\uff0c15\u4e2a\u5f85\u8d2d\u5546\u54c1\u7684case\uff0c\u4e5f\u80fd\u57280m12.260s\u5185\u89e3\u51b3\u3002<\/p>\n<p><a href=\"https:\/\/blog.axqd.net\/wp-content\/uploads\/2009\/08\/GCJ-2009-Practise.zip\">GCJ 2009 Practise Solution Download<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53bb\u5e74\u505a\u4e86\u505aGoogle Code Jam\u7684\u5165\u56f4\u9898\uff0c\u633a\u597d\u73a9\u7684\u3002\u4eca\u5e74\u65e9\u65e9\u7684\u5c31\u6536\u5230\u4e86\u90ae\u4ef6\uff0c\u5e76\u4e14\u8fd8\u9644\u4e0a\u4e86\u56db\u9053\u7ec3\u4e60\u9898\u3002  &hellip; <a href=\"https:\/\/blog.axqd.net\/?p=700\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cGoogle Code Jam 2009 (Practise)\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[19,73,127],"class_list":["post-700","post","type-post","status-publish","format-standard","hentry","category-tech","tag-algorithm","tag-google-code-jam","tag-programming"],"_links":{"self":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts\/700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=700"}],"version-history":[{"count":0,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts\/700\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}