{"id":503,"date":"2021-03-28T03:15:00","date_gmt":"2021-03-27T19:15:00","guid":{"rendered":"https:\/\/blog.cruciferslab.net\/?p=503"},"modified":"2024-03-08T11:00:51","modified_gmt":"2024-03-08T03:00:51","slug":"gcj-2021-qualification","status":"publish","type":"post","link":"https:\/\/blog.cruciferslab.net\/?p=503","title":{"rendered":"GCJ 2021 Qualification"},"content":{"rendered":"\n<p>\u4eca\u5e74\u958b\u59cb\u6709\u9019\u500b\u5730\u65b9\u5c31\u4f86\u5beb\u500b\u548c\u4ee5\u524d\u4e00\u6a23\u7684\u89e3\u984c\u7b46\u8a18\u597d\u4e86\u3002\u5176\u5be6\u9019\u672c\u4f86\u61c9\u8a72\u662f\u4e0a\u9031 GKS Round A \u5c31\u8981\u5148\u958b\u59cb\u505a\u7684\uff0c\u4e0d\u5de7\u90a3\u4e00\u56de\u5728\u9031\u65e5\u51cc\u6668\uff0c\u6709\u4e9b\u4e8b\u60c5\u5361\u8457\u6c92\u8fa6\u6cd5\u51cc\u6668\u53c3\u6230\u53ea\u597d\u5ef6\u5230\u9019\u6b21\u3002<\/p>\n\n\n\n<p>\u7e7c\u7e8c\u95b1\u8b80\u958b\u59cb\u6709\u96f7\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">Q1. Reversort<\/h2>\n\n\n\n<p>\u8a8d\u771f\u770b\u5b8c\u984c\u76ee\u4e4b\u5f8c\uff0c\u9019\u984c\u5c31\u53ea\u662f\u5f88\u7c21\u55ae\u7684\u6a21\u64ec\u984c\uff0c\u8981\u600e\u9ebc\u53cd\u8f49\u5c31\u7167\u505a\u5c31\u884c\u4e86\u3002\u5229\u7528 STL \u88e1\u7684 <code>min_element<\/code> \u548c <code>reverse<\/code>\uff0c\u9084\u53ef\u4ee5\u628a\u5167\u5c64\u8ff4\u5708\u85cf\u9032\u53bb XD<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q3. Reversort Engineering<\/h2>\n\n\n\n<p>\u7136\u5f8c\u5c31\u5148\u8df3\u4f86\u9019\u984c\u984c\u76ee\u524d\u534a\u4e00\u6a21\u4e00\u6a23\u7684\u984c\u4e86\u3002\u9019\u984c\u662f\u53cd\u904e\u4f86\uff0c\u7d66\u5b9a\u53cd\u8f49\u7e3d\u82b1\u8cbb\u69cb\u9020\u51fa\u5217\u8868\u4f86\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u767c\u73fe\u7e3d\u82b1\u8cbb\u662f\u6709\u4e0a\u4e0b\u9650\u7684\uff1a\u5c0d \\(n\\) \u500b\u5143\u7d20\u7684\u5217\u8868\uff0c\u7e3d\u82b1\u8cbb\u6700\u5c11\u662f \\(n-1\\)\uff0c\u6700\u591a\u5247\u662f \\(2+3+\\cdots+n=n(n+1)\/2-1\\)\u3002\u89c0\u5bdf\u53cd\u8f49\u904e\u7a0b\uff0c\u53ef\u4ee5\u767c\u73fe\u6bcf\u4e00\u6b65\u7684\u82b1\u8cbb\u53ef\u4ee5\u5728 1 \u5230\u5269\u9918\u5143\u7d20\u6578\u4e4b\u9593\u9078\u64c7\uff0c\u56e0\u6b64\u6211\u5011\u53ea\u9700\u8981\u9069\u7576\u5b89\u6392\u5143\u7d20\u4f86\u9078\u64c7\u6bcf\u6b65\u7684\u82b1\u8cbb\u5373\u53ef\u3002\u7531\u65bc\u53cd\u8f49\u662f\u4e00\u500b\u5957\u4e00\u500b\u7684\u95dc\u4fc2\uff0c\u5012\u904e\u4f86\u9078\u64c7\u82b1\u8cbb\u6703\u6bd4\u8f03\u5bb9\u6613\u64cd\u4f5c\uff1b\u56e0\u6b64\u69cb\u9020\u65b9\u6cd5\u5c31\u662f\uff1a\u6e96\u5099\u5df2\u6392\u5e8f\u7684\u5217\u8868\uff0c\u5f9e\u5012\u6578\u7b2c\u4e8c\u500b\u5143\u7d20\u958b\u59cb\uff0c\u8caa\u5a6a\u5730\u5728\u4e0d\u8b93\u5f8c\u7e8c\u6c92\u6709\u82b1\u8cbb\u7684\u524d\u63d0\u4e0b\u6eff\u8db3\u5269\u4e0b\u7684\u82b1\u8cbb\u3002<\/p>\n\n\n\n<p>\u9019\u500b\u65b9\u5f0f\u986f\u7136\u4e0d\u6703\u5f97\u5230\u548c Sample Output \u4e00\u6a23\u7684\u8f38\u51fa\uff0c\u4e0d\u904e\u9019\u984c\u662f Special Judge \u6240\u4ee5\u6c92\u554f\u984c\u3002\u4ee5\u7b2c\u4e00\u500b\u7bc4\u4f8b <code data-enlighter-language=\"generic\" class=\"EnlighterJSRAW\">4 6<\/code> \u70ba\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5df2\u6392\u5e8f\u5217\u8868\u662f 1 2 3 4<\/li>\n\n\n\n<li>\u6709\u4e09\u6b65\u9078\u64c7\uff0c\u82b1\u8cbb\u5206\u5225 1~2\u30011~3\u30011~4<\/li>\n\n\n\n<li>\u6240\u4ee5\u5728\u5118\u91cf\u6eff\u8db3\u7684\u65b9\u5f0f\u4e0b\u4e09\u6b21\u53cd\u8f49\u7531\u5f8c\u5230\u524d\u7684\u9577\u5ea6\u662f 2\u30013\u30011<\/li>\n\n\n\n<li>\u5e8f\u5217\u8b8a\u5316\u662f 1 2 3 4 \u2192 1 2 4 3 \u2192 1 3 4 2 \u2192 1 3 4 2\uff0c\u5373\u662f\u8f38\u51fa<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Q2. Moons and Umbrellas<\/h2>\n\n\n\n<p>\u9019\u984c\u8981\u505a\u7684\u4e8b\u5f88\u7c21\u55ae\uff1a\u586b\u6eff\u4e2d\u9593\u7684\u554f\u865f\u4f7f\u5f97\u7e3d\u5b57\u4e32\u7684 cost \u6700\u5c0f\u3002\u4e0d\u904e\u56e0\u70ba cost \u53ea\u8ddf\u76f8\u9130\u5b57\u6bcd\u6709\u95dc\uff0c\u9019\u500b\u5b57\u4e32\u7684 cost \u5176\u5be6\u53ef\u4ee5\u60f3\u50cf\u6210\u5728\u4e00\u500b\u5169\u500b\u9ede\u7684\u5b8c\u5168\u6709\u5411\u5716\u4e0a\u8d70\u8def\uff0c\u8d70\u904e\u7684\u908a\u6709 cost\uff0c\u8981\u6700\u5c0f\u5316\u8d70\u56fa\u5b9a\u6b65\u6578\u6307\u5b9a\u8d77\u9ede\u548c\u7d42\u9ede\u7684 cost\u3002<\/p>\n\n\n\n<p>\u65e2\u7136\u662f\u56fa\u5b9a\u6b65\u6578\uff0c\u9019\u5176\u5be6\u5c31\u53ea\u662f\u500b\u7c21\u55ae\u7684 DP \u7d50\u69cb\uff1b\u7531\u65bc\u5716\u4e0a\u53ea\u6709\u5169\u9ede\uff0c\u72c0\u614b\u53ea\u6709\u56db\u500b\uff0cDP \u905e\u8ff4\u5f0f\u53ef\u4ee5\u5b8c\u5168\u5beb\u958b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">C...C = C...CC + C...JC = min(C...C, C...J+JC)\nC...J = C...JJ + C...CJ = min(C...J, C...C+CJ)\nJ...C = J...CC + J...JC = min(J...C, J...J+JC)\nJ...J = J...JJ + J...CJ = min(J...J, J...C+CJ)<\/pre>\n\n\n\n<p>\u9019\u662f\u7d66\u5b9a\u982d\u5c3e (\u5c31\u662f\u554f\u865f\u5728\u5b57\u4e32\u4e2d\u9593\u7684)\uff0c\u5982\u679c\u662f\u5728\u5b57\u4e32\u982d\u6216\u5c3e\u7684\u8a71\u5c31\u8981\u8003\u616e\u982d\u6216\u5c3e\u662f\u5169\u7a2e\u7684\u54ea\u4e00\u7a2e\u4e86\u3002\u5168\u554f\u865f\u7684\u984c\u76ee\u4e4d\u770b\u4e0d\u9700\u8981\u505a\uff0c\u4e0d\u904e Bonus \u7684 1 \u5206\u6709\u8ca0 cost \u7684\u5c31\u9700\u8981\u8003\u616e\u4e86\uff0c\u6240\u4ee5\u5c31\u4e5f\u5beb\u9032\u53bb\u4e86\u3002(\u53cd\u6b63\u5c0d\u6c92\u6709\u8ca0 cost \u7684\u8f38\u5165\u4e5f\u6703\u6b63\u78ba\u8dd1\u51fa 0 \u6240\u4ee5\u6c92\u5dee)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q4. Median Sort<\/h2>\n\n\n\n<p>\u6bcf\u5e74\u90fd\u6703\u4f86\u7684\u4e92\u52d5\u984c\u3002<\/p>\n\n\n\n<p>\u5982\u540c\u984c\u76ee\u6240\u8aaa\uff0c\u9019\u7a2e\u6392\u5e8f\u6cd5\u7121\u6cd5\u5206\u8fa8\u6574\u500b\u5e8f\u5217\u662f\u6b63\u7684\u6216\u53cd\u7684\uff0c\u4e0d\u904e\u9664\u6b64\u4e4b\u5916\u7684\u9806\u5e8f\u537b\u80fd\u554f\u5f97\u51fa\u4f86\u3002\u7279\u5225\u7684\u662f\uff0c\u6211\u5011\u53ef\u4ee5\u554f\u51fa\u4e00\u500b\u6578\u5b57\u662f\u8a72\u6392\u5728\u5df2\u6709\u5e8f\u5217\u7684\u54ea\u5169\u500b\u6578\u4e2d\u9593\u3002\u9019\u5c31\u5f88\u76f4\u89ba\u5730\u80fd\u5920\u806f\u60f3\u5230\u63d2\u5165\u6392\u5e8f\u6cd5\u3002<\/p>\n\n\n\n<p>\u63d2\u5165\u6392\u5e8f\u6cd5\u6709\u4e00\u500b\u5f88\u5e38\u898b\u7684\u6539\u9032\u6bd4\u8f03\u6b21\u6578\u7684\u65b9\u5f0f\uff0c\u5c31\u662f\u6bcf\u6b21\u90fd\u4f7f\u7528\u4e8c\u5206\u641c\u5c0b\u5c0b\u627e\u63d2\u5165\u4f4d\u7f6e\u3002\u8a73\u7d30\u65b9\u6cd5\u662f\uff1a\u6700\u958b\u59cb\u7684\u4e09\u500b\u6578\u76f4\u63a5\u554f\u4e00\u6b21\u5c31\u80fd\u63d0\u4f9b\u6392\u5e8f\u57fa\u790e\uff0c\u96a8\u5f8c\u7684\u4e8c\u5206\u641c\u5c0b\u5c0d\u5df2\u6709\u7684 n \u500b\u5143\u7d20\u4e2d\u7684 n+1 \u500b\u7a7a\u9593\uff0c\u8a62\u554f\u65b0\u5143\u7d20\u662f\u5426\u653e\u5728\u9019\u7a7a\u9593\u6b63\u4e2d\u9593\u7684\u4f4d\u7f6e\uff1b\u5982\u679c\u56de\u7b54\u4e2d\u4f4d\u6578\u662f\u65b0\u5143\u7d20\uff0c\u90a3\u5c31\u5728\u6b63\u4e2d\u9593\uff0c\u5426\u5247\u5c31\u662f\u5728\u56de\u7b54\u90a3\u6578\u7684\u90a3\u4e00\u908a\u3002<\/p>\n\n\n\n<p>\u5be6\u969b\u5beb\u51fa\u4f86\u5c31\u53ef\u4ee5\u5728\u7d71\u8a08\u4e0a\u770b\u5230\u5e73\u5747 170 \u6b21\u8a62\u554f\u662f\u8db3\u4ee5\u6392\u5e8f 50 \u500b\u5143\u7d20\u7684\u3002\u5f8c\u4f86\u6211\u7528 Mathematica \u7c21\u55ae\u7b97\u4e86\u4e00\u4e0b\uff0c\u5c0d 50 \u500b\u5143\u7d20\u7684\u5e73\u5747\u8a62\u554f\u6b21\u6578\u7d04\u662f 162.4 \u6b21\uff1b\u9019\u548c\u5be6\u969b\u6e2c\u8a66\u6642\u7d66\u51fa\u7684 100 \u7d44\u6e2c\u8cc7\u7e3d\u6b21\u6578\u7d04\u7565 16300 \u6b21\u662f\u76f8\u7b26\u7684\u3002<\/p>\n\n\n\n<p>\u4e0d\u904e\uff0c\u7531\u65bc\u9019\u662f\u4e00\u500b\u4e09\u5143\u8a62\u554f\uff0c\u56e0\u6b64\u5176\u5be6\u53ef\u4ee5\u628a\u4e8c\u5206\u641c\u5c0b\u6539\u6210\u4e09\u5206\u641c\u5c0b\uff1a\u628a\u641c\u5c0b\u7bc4\u570d\u5207\u6210\u4e09\u4efd\uff0c\u8a62\u554f\u65b0\u5143\u7d20\u662f\u5426\u5728\u6b63\u4e2d\u9593\u90a3\u4e00\u4efd\u7576\u4e2d\u3002\u7531\u65bc \\(O(n\\log n)\\) \u7684\u5c0d\u6578\u5e95\u6578\u7531 2 \u8b8a\u6210 3 \u4e86\uff0c\u6392\u5e8f 50 \u500b\u5143\u7d20\u7684\u5e73\u5747\u8a62\u554f\u6b21\u6578\u662f\u6703\u4e0b\u964d\u7684\uff0c\u5be6\u969b\u6578\u5b57\u662f\u7d04 145.5 \u6b21\uff1b\u4e0d\u904e\u8003\u616e\u5230\u539f\u984c\u662f\u7d66 170 \u9019\u500b\u908a\u754c\uff0c\u61c9\u8a72\u662f\u6709\u610f\u8981\u8b93\u4e8c\u5206\u641c\u5c0b\u4e5f\u80fd\u901a\u904e\u5c31\u662f\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q5. Cheating Detection<\/h2>\n\n\n\n<p>\u679c\u7136\u6211\u5c0d\u7d71\u8a08\u985e\u7684\u984c\u76ee\u9084\u662f\u5b8c\u5168\u4e0d\u884c\u2026\u2026<\/p>\n\n\n\n<p>\u5f88\u5927\u7565\u5730\u8aaa\uff0c\u9019\u984c\u662f\u8981\u4f60\u5728 100 \u500b\u6839\u64da\u67d0\u500b\u5206\u5e03\u9078\u53d6\u7684\u6709 10000 \u5143\u7d20\u7684\u6a23\u672c\u4e2d\uff0c\u9078\u51fa\u5176\u4e2d\u5206\u5e03\u548c\u53e6\u5916 99 \u500b\u4e0d\u592a\u4e00\u6a23\u7684\u90a3\u4e00\u500b\u3002\u8a73\u7d30\u4e0a\u4f86\u8aaa\uff0c\u984c\u76ee\u6709\u7d66\u5b9a\u5927\u90e8\u4efd\u6a23\u672c\u7684\u300c\u5206\u5e03\u300d(\u662f\u500b\u6839\u64da\u908f\u8f2f\u51fd\u6578\u6c7a\u5b9a\u6a5f\u7387\u7684\u4f2f\u52aa\u5229\u8a66\u9a57)\uff0c\u800c\u4e0d\u4e00\u6a23\u7684\u90a3\u500b\u5247\u662f\u9019\u6a23\u7684\u5206\u5e03\u52a0\u4e0a\u4e00\u500b\u8b8a\u63db\u8b93\u4ed6\u80fd\u6709\u597d\u4e00\u9ede\u7684\u6210\u7e3e\u3002<\/p>\n\n\n\n<p>\u56e0\u70ba\u5b8c\u5168\u6c92\u60f3\u6cd5\uff0c\u53ea\u597d\u7528\u9ede\u4f30\u8a08\u65b9\u5f0f\u4f86\u5617\u8a66\u731c\u6e2c\u5404\u500b\u4eba\u548c\u5404\u500b\u554f\u984c\u7684\u96b1\u85cf\u53c3\u6578\uff0c\u4f46\u5be6\u969b\u4e0a\u56e0\u70ba\u9019\u500b\u4f30\u8a08\u5f88\u4e0d\u6e96\u7684\u95dc\u4fc2 (\u5c0d\u554f\u984c\u53c3\u6578\u53ea\u6709 100 \u500b\u6a23\u672c\u9ede)\uff0c\u6548\u679c\u5176\u5be6\u5f88\u5dee\uff0c\u9023\u6e2c\u8cc7\u4e00\u7684 10% \u90fd\u9054\u4e0d\u6210\u3002\u5728\u601d\u8003\u4e86\u4e00\u5929 (\u52a0\u4e0a\u5927\u767d\u5929\u5012\u5728\u5e8a\u4e0a\u7761\u4e86\u597d\u4e00\u6703\u5152) \u4e4b\u5f8c\uff0c\u624d\u7e3d\u7b97\u62cb\u6389\u4f30\u8a08\u53c3\u6578\u7684\u5927\u65b9\u5411\uff0c\u76f4\u63a5\u53bb\u7528\u7d66\u5b9a\u7684\u6a23\u672c\u53bb\u7b97\u3002<\/p>\n\n\n\n<p>\u6703\u60f3\u5230\u9019\u500b\u65b9\u5411\u7684\u539f\u56e0\u5176\u5be6\u548c\u984c\u76ee\u7279\u5225\u4f7f\u7528<a href=\"https:\/\/en.wikipedia.org\/wiki\/Logistic_function\" data-type=\"URL\" data-id=\"https:\/\/en.wikipedia.org\/wiki\/Logistic_function\">\u908f\u8f2f\u51fd\u6578<\/a>\u6c7a\u5b9a\u6a5f\u7387\u662f\u6709\u95dc\u7684\u3002\u5982\u679c\u8a8d\u771f\u7684\u53bb\u628a\u60f3\u4f30\u8a08\u7684\u53c3\u6578\u7684\u6700\u5927\u4f3c\u7136\u4f30\u8a08\u7d66\u6c42\u51fa\u4f86\u7684\u8a71\uff0c\u6703\u767c\u73fe\u4e0d\u8ad6\u6a23\u672c\u9ede\u662f\u7b54\u5c0d\u9084\u662f\u7b54\u932f\uff0c\u56e0\u70ba\u908f\u8f2f\u51fd\u6578\u7684\u7279\u6027\uff0c\u4f3c\u7136\u51fd\u6578 (\u7684\u5c0d\u6578) \u7684\u5fae\u5206\u4e2d\u5404\u9805\u6703\u8b8a\u6210\u5dee\u4e0d\u591a\u76f8\u540c\u7684\u9805\uff1b\u4e5f\u5c31\u662f\u8aaa\uff0c\u6700\u5f8c\u6c7a\u5b9a\u9019\u500b\u6700\u5927\u4f3c\u7136\u4f30\u8a08\u503c\u7684\u53c3\u6578\u53ea\u6709\u7b54\u5c0d\u7387\uff0c\u8ddf\u5be6\u969b\u4e0a\u7b54\u5c0d\u4e86\u54ea\u4e00\u984c\u662f\u6c92\u6709\u95dc\u4fc2\u7684<sup data-fn=\"b1088034-0271-4e9b-a0e7-2dcf9587ff20\" class=\"fn\"><a href=\"#b1088034-0271-4e9b-a0e7-2dcf9587ff20\" id=\"b1088034-0271-4e9b-a0e7-2dcf9587ff20-link\">1<\/a><\/sup>\u3002\u5728\u9019\u5c64\u89c0\u9ede\u4e0a\uff0c\u9019 10000 \u500b\u984c\u76ee\u53ea\u6709\u300c\u5168\u90e8\u90fd\u7b54\u5c0d\u300d\u300c\u88ab 99 \u4eba\u7b54\u5c0d\u300d\u2026\u2026\u300c\u88ab 1 \u4eba\u7b54\u5c0d\u300d\u300c\u6c92\u4eba\u7b54\u5c0d\u300d\u9019 101 \u985e\u800c\u5df2\u3002\u96b1\u85cf\u53c3\u6578\u548c\u7b54\u5c0d\u7387\u662f\u6709\u95dc\uff0c\u4f46\u9019\u57fa\u672c\u4e0a\u5c31\u662f\u51fa\u984c\u6642\u7684\u96a8\u6a5f\u904e\u7a0b\u7684\u96a8\u6a5f\u6a23\u672c\u800c\u5df2\u3002<\/p>\n\n\n\n<p>\u4f46\u9019\u6a23\u554f\u984c\u5c31\u53c8\u56de\u5230\u539f\u9ede\u4e86\uff1a\u6211\u5011\u8981\u627e\u7684\u5206\u5e03\u7a76\u7adf\u662f\u600e\u9ebc\u6a23\u7684\u5206\u5e03\uff1f\u56de\u982d\u601d\u8003\u7b54\u984c\u548c\u300c\u4f5c\u5f0a\u300d\u7684\u904e\u7a0b\uff0c\u4e0d\u96e3\u767c\u73fe\u5dee\u5225\u662f\u9019\u6a23\u7684\uff1a\u6b63\u5e38\u7b54\u984c\u5728\u9ad8\u96e3\u5ea6\u554f\u984c\u7684\u7b54\u5c0d\u7387\u6703\u986f\u8457\u4e0b\u964d\uff0c\u7279\u5225\u662f\u63a5\u8fd1\u96e3\u5ea6 3 \u7684\u984c\u76ee\u53ea\u6709\u6280\u80fd 3 \u7684\u5f37\u8005\u624d\u6709\u63a5\u8fd1 50% \u5de6\u53f3\u7684\u7b54\u5c0d\u7387\uff1b\u4f46\u5982\u679c\u4f5c\u5f0a\u4e86\u7684\u8a71\uff0c\u5c31\u7b97\u662f\u96e3\u5ea6 3 \u7684\u984c\u76ee\u90fd\u80fd\u8f15\u9b06\u7372\u5f97\u81f3\u5c11 50% \u7684\u7b54\u5c0d\u7387\u3002\u4e5f\u5c31\u662f\u8aaa\uff0c\u6211\u5011\u8981\u627e\u7684\u662f\u5728<strong>\u9ad8\u96e3\u5ea6\u984c\u76ee\u6709\u8457\u7570\u5e38\u7b54\u5c0d\u7387\u7684\u4eba<\/strong>\u3002<\/p>\n\n\n\n<p>\u6839\u64da\u4e0a\u9762\u7684\u89c0\u5bdf\uff0c\u6240\u8b02\u300c\u9ad8\u96e3\u5ea6\u984c\u76ee\u300d\u5176\u5be6\u5c31\u5f88\u55ae\u7d14\u5730\u662f\u300c\u5f88\u5c11\u4eba\u7b54\u5c0d\u7684\u984c\u76ee\u300d\uff1b\u4f46\u7570\u5e38\u7b54\u5c0d\u7387\u8981\u5b9a\u91cf\u63cf\u8ff0\u5c31\u6709\u9ede\u96e3\u5ea6\u4e86\uff1b\u56e0\u70ba\u6bcf\u500b\u6a23\u672c\u9ede\u4e0d\u662f\u6a5f\u7387\u503c\uff0c\u800c\u662f\u6839\u64da\u6a5f\u7387\u503c\u7522\u751f\u7684\u6a23\u672c\uff0c\u56e0\u6b64\u300c\u6709\u7570\u5e38\u7b54\u5c0d\u7387\u7684\u4eba\u300d\u5f88\u5bb9\u6613\u8ddf\u300c\u672c\u4f86\u5c31\u5f88\u5f37\u7684\u4eba\u300d\u6df7\u5728\u4e00\u8d77\u3002\u6211\u6700\u5f8c\u9001\u4e0a\u53bb\u7684\u7b54\u6848\u7684\u6b63\u78ba\u7387\u5927\u7d04\u53ea\u9054\u5230 70% \u5de6\u53f3\uff0c\u9054\u4e0d\u5230\u7b2c\u4e8c\u7d44 20 \u5206\u9700\u8981\u7684 86%\uff0c\u4e0d\u904e\u5c31\u5148\u9019\u6a23\u4e86\u5427\u3002<\/p>\n\n\n\n<p>\u6211\u9019\u500b 70% \u7684\u7b54\u6848\u662f\uff1a\u5f9e\u6700\u5c11\u4eba\u7b54\u5c0d\u7684\u984c\u76ee\u958b\u59cb\uff0c\u7d71\u8a08\u6240\u6709\u4eba\u5c0d\u9019\u4e9b\u984c\u76ee\u7684\u7684\u7b54\u5c0d\u7387\uff1b\u6bcf\u6b21\u7d71\u8a08\u5b8c\u67d0\u500b\u7e3d\u7b54\u5c0d\u7387\u7684\u984c\u76ee\u4e4b\u5f8c\uff0c\u5c0d\u6240\u6709\u4eba\u9032\u884c\u7b54\u5c0d\u7387\u6392\u5e8f\uff0c\u53d6\u524d\u5341\u540d\uff0c\u7d66\u9019\u5341\u500b\u4eba\u4e00\u500b\u6b63\u6bd4\u65bc\u8a72\u4eba\u7e3d\u9ad4\u7b54\u932f\u7387\u7684\u5206\u6578\u3002\u5728\u8655\u7406\u4e86\u4e00\u5b9a\u91cf\u7684\u9ad8\u96e3\u5ea6\u984c\u76ee\u4e4b\u5f8c\uff0c\u5c31\u8aaa\u6709\u6700\u9ad8\u5206\u7684\u4eba\u662f\u53ef\u80fd\u7684\u4f5c\u5f0a\u8005\u3002\u6703\u8003\u616e\u6574\u9ad4\u7b54\u932f\u7387\u662f\u56e0\u70ba\uff0c\u4f5c\u5f0a\u7684\u4eba\u9664\u975e\u4ed6\u81ea\u5df1\u672c\u4f86\u5c31\u5920\u5f37\uff0c\u4e0d\u7136\u6574\u9ad4\u7684\u7b54\u932f\u7387\u6703\u6bd4\u5f88\u5f37\u7684\u4eba\u4e0d\u4f5c\u5f0a\u7684\u7b54\u932f\u7387\u4f86\u5f97\u9ad8\uff1b\u662f\u5229\u7528\u9019\u6a23\u4f86\u7c21\u55ae\u7be9\u9078\u53ef\u80fd\u7684\u4f5c\u5f0a\u8005\u7684\u3002\u76f8\u5c0d\u4f86\u8aaa\uff0c\u4f5c\u5f0a\u8005\u81ea\u5df1\u5920\u5f37\u7684\u8a71\u5c31\u6703\u5f9e\u9019\u500b\u7be9\u9078\u7576\u4e2d\u6f0f\u6389\uff1b\u96d6\u7136\u9019\u6a23\u4e00\u4f86\u4ed6\u5f88\u5bb9\u6613\u5728\u9019\u7d71\u8a08\u4e2d\u9738\u699c\uff0c\u4e0d\u904e\u6211\u66ab\u6642\u6c92\u6709\u5fc3\u529b\u53bb\u627e\u4e00\u500b\u9069\u7576\u7684\u5224\u65b7\u689d\u4ef6\u4f86\u5207\u63db\u5075\u6e2c\u65b9\u5f0f\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7e3d\u7d50<\/h2>\n\n\n\n<p>\u96d6\u7136\u662f\u7b2c\u4e09\u5e74\u53c3\u52a0 GCJ \u4e86\uff0c\u4f46\u662f\u505c\u4e86\u9019\u6bb5\u6642\u9593\u6c92\u505a\u7af6\u8cfd\u984c\u6750\u679c\u7136\u6709\u4e9b\u6771\u897f\u9084\u662f\u6eff\u751f\u758f\u7684\uff1b\u52a0\u4e0a\u78b0\u5230\u6211\u4e0d\u64c5\u9577\u7684\u984c\u6750\u6240\u4ee5\u5c31\u9817\u70ba\u5361\u5361 orz<\/p>\n\n\n\n<p>\u8a71\u8aaa\u56de\u4f86\uff0c\u4e0d\u77e5\u9053\u662f\u4e0d\u662f\u56e0\u70ba\u6700\u8fd1\u6709\u5728\u770b\u4e00\u4e9b AI \u76f8\u95dc\u7684\u6771\u897f\uff0c\u9019\u7b2c\u4e94\u984c\u770b\u8d77\u4f86\u5f88\u6709\u50b3\u7d71 AI \u7684\u5206\u985e\u5668\u984c\u578b\u7684\u5473\u9053\u2026\u2026\u6211\u5728\u731c\u8a72\u4e0d\u6703\u9019\u984c\u5176\u5be6\u662f\u6709\u9019\u65b9\u9762\u7684\u7c21\u55ae\u7b54\u6848\uff1f<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8a3b\u8173<\/h2>\n\n\n<ol class=\"wp-block-footnotes\"><li id=\"b1088034-0271-4e9b-a0e7-2dcf9587ff20\">\u8a73\u7d30\u8aaa\u662f\uff1a\\(\\frac{d}{dx}\\log\\sigma(x)=\\sigma(-x)=1-\\sigma(x))\uff0c\u4f46(\\frac{d}{dx}\\log(1-\\sigma(x))=-\\sigma(x)\\)\uff0c\u56e0\u6b64\u4e0d\u8ad6\u7b54\u5c0d\u72c0\u6cc1\uff0c\u6240\u6709\u4eba\u5c0d\u6240\u6709\u984c\u90fd\u6709 \\(-\\sigma(x)\\) \u7684\u9805\uff0c\u7b54\u5c0d\u7b54\u932f\u7684\u5dee\u5225\u5c31\u662f\u6709\u6c92\u6709 1 \u800c\u5df2\uff0c\u56e0\u6b64\u6700\u5f8c\u7d50\u679c\u53ea\u8ddf\u7b54\u5c0d\u7387\u6709\u95dc\u3002 <a href=\"#b1088034-0271-4e9b-a0e7-2dcf9587ff20-link\" aria-label=\"\u8fd4\u56de\u8a3b\u8173\u53c3\u7167 1\">\u21a9\ufe0e<\/a><\/li><\/ol>","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5e74\u958b\u59cb\u6709\u9019\u500b\u5730\u65b9\u5c31\u4f86\u5beb\u500b\u548c\u4ee5\u524d\u4e00\u6a23\u7684\u89e3\u984c\u7b46\u8a18\u597d\u4e86\u3002\u5176\u5be6\u9019\u672c\u4f86\u61c9\u8a72\u662f\u4e0a\u9031 GKS Round A \u5c31\u8981\u5148\u958b\u59cb\u505a [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"[{\"content\":\"\u8a73\u7d30\u8aaa\u662f\uff1a\\\\(\\\\frac{d}{dx}\\\\log\\\\sigma(x)=\\\\sigma(-x)=1-\\\\sigma(x))\uff0c\u4f46(\\\\frac{d}{dx}\\\\log(1-\\\\sigma(x))=-\\\\sigma(x)\\\\)\uff0c\u56e0\u6b64\u4e0d\u8ad6\u7b54\u5c0d\u72c0\u6cc1\uff0c\u6240\u6709\u4eba\u5c0d\u6240\u6709\u984c\u90fd\u6709 \\\\(-\\\\sigma(x)\\\\) \u7684\u9805\uff0c\u7b54\u5c0d\u7b54\u932f\u7684\u5dee\u5225\u5c31\u662f\u6709\u6c92\u6709 1 \u800c\u5df2\uff0c\u56e0\u6b64\u6700\u5f8c\u7d50\u679c\u53ea\u8ddf\u7b54\u5c0d\u7387\u6709\u95dc\u3002\",\"id\":\"b1088034-0271-4e9b-a0e7-2dcf9587ff20\"}]"},"categories":[7,4],"tags":[],"class_list":["post-503","post","type-post","status-publish","format-standard","hentry","category-gcj","category-programming"],"_links":{"self":[{"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=\/wp\/v2\/posts\/503","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=503"}],"version-history":[{"count":16,"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=\/wp\/v2\/posts\/503\/revisions"}],"predecessor-version":[{"id":1748,"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=\/wp\/v2\/posts\/503\/revisions\/1748"}],"wp:attachment":[{"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.cruciferslab.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}