{"id":686,"date":"2013-02-20T06:07:17","date_gmt":"2013-02-19T22:07:17","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=686"},"modified":"2013-02-20T06:07:17","modified_gmt":"2013-02-19T22:07:17","slug":"srm-571","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/srm-571\/","title":{"rendered":"SRM 571"},"content":{"rendered":"

<\/p>\n

Brief description: <\/h3>\n

… \u70b9\u6743\u6700\u5927\u56e2\u3002\u3002\u8981\u6c42\u70b9\u6570\u81f3\u5c11\u662f 2\/3 * n\u3002\u3002<\/p>\n

Analysis: <\/h3>\n

… \u6bd4\u8d5b\u65f6\u89c9\u5f97\u7528\u6700\u5927\u56e2\u6a21\u677f\u53ef\u4ee5\u79d2\u3002\u3002\u4e8e\u662f\u52a0\u4e86\u6700\u4f18\u526a\u679d\u5c31\u4ea4\u4e86\u3002\u3002\uff08\u3002TLE \u3002\u3002
\n\u3002\u3002\u8d5b\u540e CLJ \u5728\u7fa4\u91cc\u9762\u8ba8\u8bba\u4e86\u4e00\u4e0b\u5979\u7684\u505a\u6cd5\u3002\u3002\u5927\u6982\u662f\uff1a\u3002\u3002<\/p>\n

Yuuka Kazami(12xxxxxxxx) 1:59:37
\n\u6211\u7684\u505a\u6cd5\u662f\u8fd9\u6837\u7684\u3002\u3002
\n\u4e24\u4e2a\u70b9\u6ca1\u6709\u8fb9\u3002\u3002
\n\u679a\u4e3e\u54ea\u4e2a\u4e0d\u5728\u56e2\u91cc\u3002
\n\u90a3\u4e48\u6bcf\u6b21\u5c11\u4e00\u4e2a\u70b9\u3002\u3002\u3002<\/p><\/blockquote>\n

http:\/\/community.topcoder.com\/stat?c=problem_solution&rm=316166&rd=15491&pm=11705&cr=22840511<\/a><\/p>\n

\r\n\/\/}\/* .................................................................................................................................. *\/\r\n\r\nconst int N = 60;\r\n\r\nint s[N], w[N]; bool G[N][N];\r\nint _sz, n, res;\r\n\r\nvoid dfs(int a = 0, int b = 0, int c = n - _sz + 1, int ww = w[0] + s[0], LL bad = 0){\r\n    if (!c || ww < res) return;\r\n\r\n    if (a == n) res = ww;\r\n    else if (a == b) dfs(a+1, 0, c, ww, bad);\r\n    else {\r\n        if (G[a][b] || _1(bad, a) ||_1(bad, b)) dfs(a, b+1, c, ww, bad);\r\n        else {\r\n            dfs(a, b+1, c-1, ww-w[a], bad|_1(a));\r\n            dfs(a, b+1, c-1, ww-w[b], bad|_1(b));\r\n        }\r\n    }\r\n}\r\n\r\nclass MagicMolecule {\r\npublic:\r\n\tint maxMagicPower(vector <int> magicPower, vector <string> magicBond) {\r\n\r\n        REP_C(i, n = SZ(magicPower)) w[i] = magicPower[i];\r\n        s[n-1] = 0; DWN(i, n, 0) s[i] = s[i+1] + w[i+1];\r\n\r\n        _sz = ceil(2*n, 3); REP_2(i, j, n, n) G[i][j] = magicBond[i][j] == 'Y';\r\n        res = -1, dfs();\r\n        return res;\r\n\t}\r\n};\r\n<\/pre>\n
\u590d\u6742\u5ea6\u6709\u5f85\u5206\u6790\uff1f\u3002<\/del>
\n\u3002\u3002\u3002\u548c\u539f\u9898\u76f8\u6bd4\u3002\u3002\u53ea\u589e\u52a0\u4e86\u89c4\u6a21\u7684\u9650\u5236\u6761\u4ef6\u3002\u3002\u5728\u5b58\u5728\u5927\u91cf\u4e0d\u5408\u6cd5\u7684\u641c\u7d22\u5206\u6cbb\u65f6\u3002\u3002\u4f1a\u6781\u5927\u7684\u9650\u5236\u6700\u4f18\u526a\u679d\u7684\u53d1\u6325\u3002\u3002\u3002
\n\u3002\u3002\u800c\u8fd9\u79cd\u641c\u7d22\u65b9\u6cd5\u5219\u5f88\u59a5\u5584\u7684\u5229\u7528\u4e86\u8fd9\u4e2a\u4fe1\u606f\u3002\u3002<\/p>\n
External link: <\/h3>\n
http:\/\/community.topcoder.com\/stat?c=coder_room_stats&rd=15491&cr=22727863<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"","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":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[17],"tags":[],"class_list":["post-686","post","type-post","status-publish","format-standard","hentry","category-topcoder"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-b4","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/686","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=686"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/686\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}