{"id":402,"date":"2012-08-11T19:28:19","date_gmt":"2012-08-11T11:28:19","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=402"},"modified":"2012-08-12T08:24:02","modified_gmt":"2012-08-12T00:24:02","slug":"codechef-august-challenge-2012","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/codechef-august-challenge-2012\/","title":{"rendered":"CodeChef August Challenge 2012"},"content":{"rendered":"

\u3002\u3002\u3002\u30026.5 \/ 10 \u3002\u3002\u597d\u50cf\u8fd8\u4e0d\u5982\u4e0a\u4e2a\u6708\u3002\u3002\u649e\u5899\u6b7b\u4e86\u7b97\u4e86\u3002\u3002\u3002\uff09\u3002\u3002\u3002
\n<\/p>\n

Level 1:<\/h3>\n

Little Elephant and Bombs
\n\u3002\u3002\u7b7e\u5230\u9898\u3002\u3002\u7565\u3002\u3002\uff09<\/p>\n

Delivery Boy
\n\u3002\u3002Floyd \u3002\u3002<\/p>\n

Range of Data
\n\u3002\u3002\u6811\u72b6\u6570\u7ec4 + offset \u3002\u3002 \uff09\u3002\u3002\u6ca1\u6709\u79bb\u6563\u5316 T \u4e86\u4e00\u6b21\u3002\u3002 <\/p>\n

Lucky Driving
\n\u3002\u3002\u77e9\u9635\u4f18\u5316\u7684\u52a8\u6001\u89c4\u5212\u3002\u3002\uff08\u66b4\u529b\u7684\u8bdd\u628a\u5404\u79cd\u5b50\u51fd\u6570\u9884\u5904\u7406\u8d77\u6765\u4e5f\u80fd\u8fc7\u3002\u3002<\/p>\n

Level 2:<\/h3>\n

Block Game
\n\u7ed9\u5b9a n \u4e2a\u4eba n \u4e2a\u70b9\u3002\u3002\u7ed9\u5b9a\u6bcf\u4e2a\u4eba\u5230\u6bcf\u4e2a\u70b9\u7684\u65f6\u523b\u3002\u3002\uff08\u3002\u4e92\u4e0d\u76f8\u540c\u3002\u3002
\n\u73b0\u5728\u8981\u6c42\u7ed9\u6bcf\u4e2a\u4eba\u9009\u62e9\u4e00\u4e2a block \u70b9\uff0c\u4f7f\u5f97\u4efb\u610f\u4e00\u4e2a\u70b9\u88ab block \u4e4b\u540e\u5c31\u4e0d\u518d\u88ab\u8bbf\u95ee\u3002\u3002\u3002
\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014
\n\u3002\u3002\u8003\u60f3\u6cd5\u7684\u9898\u3002\u3002\u5927\u6982\u80fd\u731c\u6d4b\u5230\u65f6\u8d2a\u5fc3\u3002\u3002\u6211\u4e00\u76f4\u5728\u60f3\u662f\u4e0d\u662f\u6309\u7167\u67d0\u79cd\u987a\u5e8f\u4f9d\u6b21\u51b3\u5b9a block \u70b9\u3002\u3002\u3002
\n\u3002\u3002\u3002\u3002\u4f46\u662f\u59cb\u7ec8\u6ca1\u4ec0\u4e48\u60f3\u6cd5\u3002\u3002\u5176\u5b9e\u770b\u5230\u4e24\u7ec4 Rank \u6570\u7ec4\u7684\u8bdd\u5927\u6982\u5e94\u8be5\u8981\u60f3\u5230\u5f80\u7a33\u5b9a\u5a5a\u59fb\u95ee\u9898\u4e0a\u9762\u9760\u4e86\u3002\u3002
\n\u3002\uff08\u3002\u505a\u6cd5\u5927\u6982\u5c31\u662f\u5ef6\u8fdf\u8ba4\u53ef\u3002\u3002\u3002\u4e00\u7ec4 block \u65b9\u6848\u4e0d\u5408\u6cd5\u7b49\u4ef7\u4e8e\u5176\u5bf9\u5e94\u7684\u7a33\u5b9a\u5a5a\u59fb\u6a21\u578b\u4e2d\u5b58\u5728\u4e0d\u7a33\u5b9a\u5339\u914d\u3002\u3002\u3002<\/p>\n

Machine Gun
\n\u673a\u5173\u67aa (Machine Gun) \u7684\u653b\u51fb\u8303\u56f4\u662f\u81ea\u5df1\u7684\u56db\u4e2a\u89d2\u3002\u3002\u7c7b\u4f3c\u8c61\u68cb\u4e2d\u7684\u8c61\u3002\u3002\u3002\u5e76\u4e14\u5982\u679c\u4e2d\u95f4\u4f4d\u7f6e\u6709\u969c\u788d\u7684\u8bdd\u653b\u51fb\u4e0d\u8fc7\u53bb\u3002\u3002
\n\u3002\u3002\u3002\u521d\u59cb\u5730\u56fe 700 * 700\uff0c \u95ee\u6700\u591a\u8fd8\u80fd\u518d\u653e\u591a\u5c11\u633a\u673a\u5173\u67aa\u3002\u3002\u3002.
\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014
\n\u3002\u3002\uff08\u3002\u3002\u5927\u6982\u5c31\u662f\u68cb\u76d8\u4e0a\u4e92\u4e0d\u653b\u51fb\u7684\u8c61\u3002\u3002\u6bd4\u8f83\u660e\u663e\u7684\u4e8c\u5206\u56fe\u6700\u5927\u72ec\u7acb\u96c6\u6a21\u578b\u3002\u3002
\n\u3002\u3002\u6ce8\u610f\u89c4\u6a21\u5927\u5927\u5927\u5927\u5927\u3002\u3002\u8981\u4f7f\u7528\u9002\u5408\u7a00\u758f\u56fe\u7684 Hopcroft_karp \u7b97\u6cd5\u3002\u3002\u3002\u3002<\/p>\n

Game count
\n\u591a\u5bf9\u591a\u62d4\u6cb3\u6bd4\u8d5b\u95ee\u9898\u3002\u3002n \u4e2a\u70b9\u65e0\u9650\u6761\u8fb9\u3002\u3002\u8981\u6c42\u3002\u6709\u8fb9\u7684\u70b9\u4e4b\u95f4\u5ea6\u6570\u90fd\u76f8\u540c\u3002\u3002\u3002
\n\u3002\u3002\u56fe\u5fc5\u987b\u53ef\u5e73\u9762\u3002\u3002\u95ee\u5ea6\u6570\u4e0d\u8d85\u8fc7 k \u65f6\u7684\u8fde\u7ebf\u65b9\u6848\u603b\u6570\u3002\u3002
\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014
\n\u3002\u3002\uff08\u3002\u5e73\u9762\u56fe<\/a>\u9996\u5148\u60f3\u5230 Kuratowski \u5b9a\u7406\u3002\u3002\u4e0d\u53ef\u5e73\u9762\u56fe\u4e00\u5b9a\u540c\u80da\u4e8e K5 \u6216\u8005 K3,3\u3002\u3002\u3002
\n\u3002\u3002\u4f46\u662f\u6ca1\u529e\u6cd5\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e2a\u5b9a\u7406\u3002\u3002\u540e\u6765\u60f3\u5230\u5bf9\u4e8e\u4efb\u4f55\u53ef\u5e73\u9762\u56fe\u3002\u3002\u4e00\u5b9a\u6ee1\u8db3 E <= 3n - 6\u3002\u3002\uff08\u53ef\u4ee5\u7531\u5e73\u9762\u56fe\u7684\u6b27\u62c9\u516c\u5f0f\u63a8\u5f97\u3002\u3002\n\u3002\u3002\u56e0\u6b64\u5b9e\u9645\u53ea\u5b58\u5728\u4e24\u79cd\u5408\u6cd5\u7684\u7ed3\u6784\u3002\u3002\u4e00\u79cd\u662f 1v1\u3002\u3002\u3002\u4e00\u79cd\u662f n \u4e2a\u4eba\u7684\u73af\u56fe\u3002\u3002\uff08n >= 3 \u3002\u3002\u3002
\n\u8fd9\u6837\u5bf9\u4e8e k \u3002\u3002\u5176\u5b9e\u53ea\u6709 0\u30011\u3001>= 2 \u4e09\u79cd\u60c5\u51b5\u3002\u5bf9\u540e\u9762\u4e24\u79cd\u60c5\u51b5\u3002\u3002\u641e\u51fa\u4e24\u5f20\u8868\u51fa\u6765\u5c31\u884c\u4e86\u3002\u3002\u3002
\n____________________
\nA001006: Motzkin numbers<\/a>
\nA000108: Catalan numbers<\/a><\/p>\n

Level 3\uff1a<\/h3>\n

\u3002\u3002\u672c\u671f Level 3 \u7684\u4e24\u9898\u90fd\u662f\u4e0e\u56fe\u8bba\u6709\u5173\u7684\u535a\u5f08\u95ee\u9898\u3002\u3002
\n\u2014\u2014\u2014\u2014\u2014\u2014<\/p>\n

A Game of Thrones
\n\u535a\u5f08\u95ee\u9898\uff0c\u7ed9\u5b9a n \u4e2a\u6570 Ai\uff0c\u6bcf\u4e2a\u6570\u53ef\u4ee5\u4f7f\u7528 Ci \u6b21\u3002\u3002
\n\u4e24\u4eba\u8f6e\u6d41\u53d6\u6570\uff0c\u6bcf\u6b21\u5220\u6389\u4e0a\u4e00\u4e2a\u4eba\u53d6\u7684\u6570\u5e76\u53d6\u4e00\u4e2a\u4e0e\u4e4b\u76f8\u90bb\u7684\u6570\uff0c
\n\u8fd9\u91cc\u7684\u76f8\u90bb\u5b9a\u4e49\u4e3a\uff0c\u76f8\u4e92\u4e4b\u95f4\u76f8\u5dee\u4e00\u4e2a\u7d20\u56e0\u5b50\uff0c\u95ee\u662f\u5426\u6709\u5fc5\u80dc\u7b56\u7565\u3002
\n\u2014\u2014\u2014\u2014\u2014\u2014
\n\u3002\u3002\u9996\u5148\u5bf9\u76f8\u90bb\u6570\u8fde\u8fb9\u3002\u90a3\u4e48\u539f\u95ee\u9898\u7b49\u4ef7\u4e8e\u4e00\u4e2a Daizhengyang Chess \u3002\u3002\u3002
\n\u3002\u3002\u5bf9\u4e8e Daizhengyang Chess \u3002\u3002\u8981\u70b9\u5728\u4e8e\u627e\u56fe\u4e2d\u7684\u5b8c\u5907\u5339\u914d\u3002\u3002\u3002\u3002
\n\u3002\u90a3\u4e48\u8fd9\u91cc\u4f3c\u4e4e\u9700\u8981\u4e00\u4e2a\u4e00\u822c\u56fe\u591a\u91cd\u5339\u914d\u7684\u6a21\u677f\u3002\u3002\u8fd9\u4e2a\u597d\u50cf\u53ef\u4ee5\u6539\u5e26\u82b1\u6811\u6a21\u677f\u91cc\u9762\u7684 Link \u3002\u3002\u6539\u6210 Pair \u6570\u7ec4\u3002\u3002
\n\u3002\u3002\u3002\uff08\u6216\u8005\u5982\u679c\u6709\u7ebf\u6027\u89c4\u5212\u6c42\u591a\u91cd\u5339\u914d\u7684\u6a21\u677f\u7684\u8bdd\u6539\u8d77\u6765\u66f4\u5bb9\u6613\u4e00\u4e9b\uff1f\u3002\u3002<\/p>\n

\u3001\u4f46\u662f\u8fd9\u4e2a\u56fe\u5b9e\u9645\u4e0a\u662f\u4e2a\u4e8c\u5206\u56fe\u3002\u3002\uff08\u6839\u636e\u5bf9\u5e94\u6570\u5b57\u7d20\u56e0\u5b50\u6307\u6570\u548c\u7684\u5947\u5076\u6027\u3002\u3002\u3002\u3002
\n\u3002\u3002\u3002\u56e0\u6b64\u53ef\u4ee5\u76f4\u63a5\u7528\u7f51\u7edc\u6d41\u6765\u505a\u5c31\u53ef\u4ee5\u4e86\u3002QAQ\u3002\u3002\u3002<\/p>\n

Two Magicians
\n\u3002\u3002\u3002\u7ed9\u5b9a\u4e00\u4e2a\u65e0\u5411\u56fe\uff0c\u4e24\u4e2a\u4eba\u8f6e\u6d41\u79fb\u52a8\u3002\u521d\u59cb\u4f4d\u7f6e\u56fa\u5b9a\u3002\u3002\u6bcf\u4e2a\u56de\u5408\u5206\u4e3a\u4e09\u4e2a\u9636\u6bb5\u3002\u3002\u3002
\n\u3002\u3002\u9636\u6bb5 I\u3002\u3002\u4ece\u5f53\u524d\u4f4d\u7f6e\u51fa\u53d1\u5230\u8fde\u901a\u533a\u57df\u91cc\u7684\u4efb\u610f\u4e00\u70b9\u3002\u3002
\n\u3002\u3002\u5982\u679c\u8fd9\u4e2a\u70b9\u6070\u597d\u662f\u53e6\u4e00\u4e2a\u73a9\u5bb6\uff0c\u5219\u5ba3\u544a\u80dc\u5229\u3002\u3002
\n(\u3002\u3002\u4e5f\u5c31\u662f\u8bf4\u5728\u7b2c\u4e00\u9636\u6bb5\u53ea\u8981\u548c\u53e6\u4e00\u4e2a\u73a9\u5bb6\u540c\u5904\u4e8e\u4e00\u4e2a\u8fde\u901a\u533a\u57df\u91cc\u65e2\u53ef\u5ba3\u544a\u80dc\u5229\u3002\u3002)..
\n\u3002\u3002\u9636\u6bb5 II\u3002\u3002\u65b0\u5efa\u4e00\u6761\u8fb9\uff0c\u5f53\u65e0\u6cd5\u65b0\u5efa\u8fb9\u7684\u65f6\u5019\u76f4\u63a5\u5224\u8d1f\u3002\u3002\u3002\u3002
\n\u3002\u3002\u3002\u9636\u6bb5 2 \u7684\u5b58\u5728\u786e\u4fdd\u4e86\u6e38\u620f\u7ec8\u6b62\u3002\u3002
\n\u3002\u3002\u9636\u6bb5 III\u3002\u3002\u5982\u679c MP \u4e0d\u4e3a 0 \u3002\u3002\u90a3\u4e48\u53ef\u4ee5\u6d88\u8017 1 \u70b9\u9b54\u6cd5\u503c\u65bd\u5c55\u4f20\u9001\u3002\u3002
\n\u3002\u3002\u4f20\u9001\u7684\u610f\u4e49\u4e3b\u8981\u5728\u4e8e\u5728\u4e0d\u540c\u7684\u8fde\u901a\u5757\u4e4b\u95f4\u7a7f\u68ad\u3002\u3002
\n\u3002\u3002\u6ce8\u610f\u4f20\u9001\u4e0d\u4f1a\u5224\u5b9a\u80dc\u5229\u3002\u56e0\u6b64\u4e0d\u4f1a\u53d1\u751f\u4e3b\u52a8\u4f20\u9001\u5230\u5bf9\u9762\u6240\u5728\u7684\u8fde\u901a\u5757\u7684\u60c5\u51b5\u3002\u3002<\/p>\n

\u3002\u3002\u521d\u59cb\u65f6\u53cc\u65b9 MP \u5747\u4e3a P\u3002\u3002\u3002\u3002\u95ee\u5148\u624b\u65b9\u662f\u5426\u5b58\u5728\u5fc5\u80dc\u65b9\u6848\u3002\u3002
\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014
\n\u4e0d\u4f1a\u505a\u3002\u3002\u3002<\/p>\n

Level 4…<\/h3>\n

Eastern Draughts
\n\u3002\u3002\u672c\u671f\u7684\u9644\u52a0\u9898\u662f\u8df3\u68cb\u95ee\u9898\u3002\u3002\u7ed9\u5b9a\u521d\u59cb\u5c40\u9762\u3002\u3002\u8981\u6c42\u6240\u6709\u68cb\u5b50\u90fd\u8d34\u8fd1\u5de6\u4e0a\u89d2\u3002\u3002
\n\u3002\u3002\u6700\u5c0f\u5316\u603b\u7684\u79fb\u52a8\u4ee3\u4ef7\u3002\u3002\u3002\u3002<\/p>\n

\u3002\u3002\u3002Step 1\u3002\u3002\u5148\u5199\u4e2a\u66b4\u529b\u9a97\u5206\u3002\u53ea\u8981\u6c42\u5f97\u5230\u5206\u5c31\u597d\u3002
\n\u3002\u3002Step 2.\u3002\u3002\u4e3a\u4e86\u6700\u5927\u5316\u8df3\u7684\u6536\u76ca\u5e94\u8be5\u8fdb\u53ef\u80fd\u7684\u5148\u79fb\u52a8\u8f83\u9760\u540e\u7684\u68cb\u5b50\u3002\u3002
\n\u3002\u3002\u3002Step 3.\u3002\u3002\u5bfb\u627e\u4e00\u4e9b\u53ef\u4ee5\u52a0\u5206\u7684\u6a21\u5f0f\u3002\u3002\u4f8b\u5982\u3002\u3002\u3002\u4e24\u4e2a\u68cb\u5b50\u4e4b\u95f4\u4ea4\u66ff\u8df3\u8dc3\u524d\u8fdb\u3002\u3002\u82e5\u5e72\u68cb\u5b50\u5728\u5fc5\u7ecf\u4e4b\u8def\u4e0a\u642d\u6865\u3002\u3002\u3002\u3002
\n\u3002\u3002\u3002\u3002\u3002<\/p>\n

External link: <\/h3>\n

http:\/\/www.codechef.com\/AUG12<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\u3002\u3002\u3002\u30026.5 \/ 10 \u3002\u3002\u597d\u50cf\u8fd8\u4e0d\u5982\u4e0a\u4e2a\u6708\u3002\u3002\u649e\u5899\u6b7b\u4e86\u7b97\u4e86\u3002\u3002\u3002\uff09\u3002\u3002\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[83],"tags":[],"class_list":["post-402","post","type-post","status-publish","format-standard","hentry","category-codechef"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-6u","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/comments?post=402"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/402\/revisions"}],"predecessor-version":[{"id":403,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/402\/revisions\/403"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}