{"id":1037,"date":"2014-10-16T18:59:53","date_gmt":"2014-10-16T10:59:53","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=1037"},"modified":"2014-10-16T18:59:53","modified_gmt":"2014-10-16T10:59:53","slug":"vijos-1313-%e9%87%91%e6%98%8e%e7%9a%84%e9%a2%84%e7%ae%97%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/vijos-1313-%e9%87%91%e6%98%8e%e7%9a%84%e9%a2%84%e7%ae%97%e6%96%b9%e6%a1%88\/","title":{"rendered":"Vijos 1313. \u91d1\u660e\u7684\u9884\u7b97\u65b9\u6848"},"content":{"rendered":"

<\/p>\n

https:\/\/vijos.org\/p\/1313<\/a><\/p>\n

\r\n\r\n\/\/}\/* .................................................................................................................................. *\/\r\n\r\nconst int N = int(61), M = int(3.2e4) + 9;\r\nint f[M]; int n, m;\r\nVI adj[N]; int c[N], v[N], p[N];\r\n\r\nVII Pack; void get(int u){\r\n    CLR(Pack); Pack.PB(MP(c[u], v[u]));\r\n    ECH(it, adj[u]) Pack.PB(MP(c[u]+c[*it], v[u]+v[*it]));\r\n    if (SZ(adj[u]) == 2) Pack.PB(MP(c[u]+c[adj[u][0]]+c[adj[u][1]], v[u]+v[adj[u][0]]+v[adj[u][1]]));\r\n}\r\n\r\n\r\n\r\nint main(){\r\n\r\n#ifndef ONLINE_JUDGE\r\n    \/\/freopen("in.txt", "r", stdin);\r\n    \/\/freopen("out.txt", "w", stdout);\r\n#endif\r\n\r\n    RD(m, n);\r\n    REP_1(i, n){\r\n        RD(c[i], v[i], p[i]); v[i] *= c[i];\r\n        if (p[i]) adj[p[i]].PB(i);\r\n    }\r\n\r\n\r\n    REP_1(i, n){\r\n        if (p[i]) continue;\r\n        get(i); DWN_1(j, m, 0){\r\n            ECH(it, Pack) if (j >= it->fi){\r\n                checkMax(f[j], f[j-it->fi] + it->se);\r\n            }\r\n        }\r\n    }\r\n    cout << f[m] << endl;\r\n}\r\n\r\n<\/pre>\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":[1],"tags":[],"class_list":["post-1037","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-gJ","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1037","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=1037"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1037\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=1037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=1037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=1037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}