\u5148\u8003\u8651\u7f51\u7edc\u6d41\u3002\u3002\u3002\u662f\u6700\u6734\u7d20\u7684\u4e8c\u5206\u56fe\u5339\u914d\u3002\u3002\u3002
\n\u8fd8\u662f\u8bbe\u6cd5\u8981\u51cf\u5c11\u8fb9\u7684\u89c4\u6a21\u3002\u3002\u3002\u6211\u4eec\u7c7b\u6bd4\u626b\u63cf\u7ebf\u6765\u505a\u77e9\u5f62\u5408\u5e76\u3002\u3002
\n\u4ece\u5de6\u5230\u53f3\u626b\u63cf\u6bcf\u4e00\u5217\uff0c\u6211\u4eec\u7528\u51fd\u6570\u5f0f\u7ebf\u6bb5\u6811\uff0c\u5c31\u80fd\u7ef4\u62a4\u51fa\u4ee3\u8868\u8fd9\u4e00\u5217\u7684\u7ebf\u6bb5\u6811\u7684\u6839\u8282\u70b9\u72b6\u6001\u3002\u3002
\n\u90a3\u4e48\u53ea\u8981\u4ece\u6e90\u70b9\u5411\u6839\u8282\u70b9\u8fde\u8fc7\u53bb\u4e00\u6761\u5bb9\u91cf\u4e3a 1 \u7684\u8fb9\u5373\u53ef\u3002\u3002\u6ce8\u610f\u9700\u8981\u4fdd\u8bc1\u8fd9\u4e9b\u7ebf\u6bb5\u6811\u5171\u4eab\u540c\u4e00\u7ec4\u95ed\u5408\u72b6\u6001\u3002\u3002\u3002<\/p>\n
\u603b\u611f\u89c9\u6709\u66f4\u597d\u7684\u505a\u6cd5\u3002\u3002\u3002<\/p>\n
\r\nconst int N = int(1e4) + 9;\r\n\r\nint T[N], H[N]; VI adj[N];\r\nint n, m;\r\n\r\nnamespace Chairman_Tree {\r\n#define lx c[0][x]\r\n#define rx c[1][x]\r\n#define ly c[0][y]\r\n#define ry c[1][y]\r\n#define lz c[0][z]\r\n#define rz c[1][z]\r\n#define ml ((l+r)>>1)\r\n#define mr (ml+1)\r\n#define lc lx, l, ml\r\n#define rc rx, mr, r\r\n const int NN = 100*N;\r\n int c[2][NN]; int tot;\r\n int pp; int dd;\r\n int new_node() {\r\n return ++tot;\r\n }\r\n int new_node(int y) {\r\n int x = ++tot; lx = ly; rx = ry;\r\n return x;\r\n }\r\n\r\n void Build(int& x, int l, int r) {\r\n if (l == r) {\r\n x = l;\r\n } else {\r\n x = new_node();\r\n Build(lc);\r\n Build(rc);\r\n }\r\n }\r\n\r\n int Insert(int x, int l, int r, int y, int a, int b) {\r\n if (b < l || r < a) return x;\r\n if (a <= l && r <= b) {\r\n return y;\r\n } else {\r\n x = new_node(x);\r\n lx = Insert(lc, ly, a, b);\r\n rx = Insert(rc, ry, a, b);\r\n return x;\r\n }\r\n }\r\n\r\n} using namespace Chairman_Tree;\r\n\r\nVII del[N], add[N];\r\n\r\nint main(){\r\n\r\n#ifndef ONLINE_JUDGE\r\n freopen("in.txt", "r", stdin);\r\n \/\/freopen("\/Users\/minakokojima\/Documents\/GitHub\/ACM-Training\/Workspace\/out.txt", "w", stdout);\r\n#endif\r\n\r\n RD(n); Rush {\r\n int x1, y1, x2, y2; RD(x1, y1, x2, y2); ++x2;\r\n add[x1].PB({y1, y2});\r\n del[x2].PB({y1, y2});\r\n }\r\n\r\n atcoder::mf_graph<int> G(NN);\r\n int s = 0, t = n+1; REP_1(i, n) G.add_edge(i, t, 1);\r\n tot = t;\r\n\r\n int x; Build(x, 1, n); int o = x, a = 0; REP_1(i, n) {\r\n int y = x;\r\n for (auto e: del[i]) x = Insert(x, 1, n, o, e.fi, e.se);\r\n for (auto e: add[i]) x = Insert(x, 1, n, 0, e.fi, e.se);\r\n if (x != y) {\r\n if (y && a) G.add_edge(s, y, a);\r\n a = 0;\r\n }\r\n ++a;\r\n }\r\n if (x) G.add_edge(s, x, a);\r\n\r\n FOR_1(x, t+1, tot) {\r\n if (lx) G.add_edge(x, lx, INF);\r\n if (rx) G.add_edge(x, rx, INF);\r\n }\r\n\r\n cout << G.flow(s, t) << endl;\r\n}\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"G. Oleg and chess \u5148\u8003\u8651\u7f51\u7edc\u6d41\u3002\u3002\u3002\u662f\u6700\u6734\u7d20\u7684\u4e8c\u5206\u56fe\u5339\u914d\u3002\u3002\u3002 \u8fd8\u662f\u8bbe\u6cd5\u8981\u51cf\u5c11\u8fb9\u7684\u89c4\u6a21\u3002\u3002\u3002\u6211\u4eec\u7c7b\u6bd4\u626b\u63cf\u7ebf\u6765\u505a\u77e9\u5f62\u5408\u5e76\u3002\u3002 \u4ece\u5de6\u5230\u53f3\u626b\u63cf\u6bcf\u4e00\u5217\uff0c\u6211\u4eec\u7528\u51fd\u6570\u5f0f\u7ebf\u6bb5\u6811\uff0c\u5c31\u80fd\u7ef4\u62a4\u51fa\u4ee3\u8868\u8fd9\u4e00\u5217\u7684\u7ebf\u6bb5\u6811\u7684\u6839\u8282\u70b9\u72b6\u6001\u3002\u3002 \u90a3\u4e48\u53ea\u8981\u4ece\u6e90\u70b9\u5411\u6839\u8282\u70b9\u8fde\u8fc7\u53bb\u4e00\u6761\u5bb9\u91cf\u4e3a 1 \u7684\u8fb9\u5373\u53ef\u3002\u3002\u6ce8\u610f\u9700\u8981\u4fdd\u8bc1\u8fd9\u4e9b\u7ebf\u6bb5\u6811\u5171\u4eab\u540c\u4e00\u7ec4\u95ed\u5408\u72b6\u6001\u3002\u3002\u3002 \u603b\u611f\u89c9\u6709\u66f4\u597d\u7684\u505a\u6cd5\u3002\u3002\u3002 const int N = int(1e4) + 9; int T[N], H[N]; VI adj[N]; int n, m; namespace Chairman_Tree { #define lx c[0][x] #define rx c[1][x] #define ly c[0][y] #define ry c[1][y] #define lz c[0][z] #define rz c[1][z] #define ml ((l+r)>>1) #define mr (ml+1) #define lc […]<\/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":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[1],"tags":[],"class_list":["post-1993","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-w9","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1993","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=1993"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1993\/revisions"}],"predecessor-version":[{"id":1994,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1993\/revisions\/1994"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=1993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=1993"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=1993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}