{"id":304,"date":"2013-01-17T18:43:00","date_gmt":"2013-01-17T10:43:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/209"},"modified":"2013-01-17T18:43:00","modified_gmt":"2013-01-17T10:43:00","slug":"poj_1442treap","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=304","title":{"rendered":"POJ 1442(Treap)"},"content":{"rendered":"<table border=\"0\" width=\"100%\" background=\"http:\/\/poj.org\/images\/table_back.jpg\" style=\"font-family:Simsun\">\n<tbody>\n<tr>\n<td>\n<div style=\"position:absolute; right:10px\">Language:<select size=\"1\"><option value=\"default\" selected=\"selected\"><br \/>\nDefault<\/option><\/select><\/div>\n<div class=\"ptt\" lang=\"en-US\" style=\"text-align:center; font-size:18pt; font-weight:bold; color:blue\">\nBlack Box<\/div>\n<div class=\"plm\" style=\"text-align:center; font-size:12pt\">\n<table align=\"center\">\n<tbody>\n<tr>\n<td><strong>Time Limit:<\/strong>&nbsp;1000MS<\/td>\n<td width=\"10px\">&nbsp;<\/td>\n<td><strong>Memory Limit:<\/strong>&nbsp;10000K<\/td>\n<\/tr>\n<tr>\n<td><strong>Total Submissions:<\/strong>&nbsp;5156<\/td>\n<td width=\"10px\">&nbsp;<\/td>\n<td><strong>Accepted:<\/strong>&nbsp;2085<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"pst\" style=\"font-size:18pt; font-weight:bold; color:blue\">Description<\/p>\n<div class=\"ptx\" lang=\"en-US\" style=\"font-family:'Times New Roman',Times,serif; font-size:12pt\">\nBlack Box \u4ee3\u8868\u6570\u636e\u5e93\u3002\uff08\u5f00\u59cb\u4e3a\u7a7a\uff09<br \/>\n\u67092\u79cd\u64cd\u4f5c<br \/>\nADD (x): \u5411\u5e93\u6dfb\u52a0\u4e00\u4e2ax;&nbsp;<br \/>\nGET: \u7b2ci\u6b21\u6267\u884c\u65f6\u8f93\u51fa\u6570\u5217\u4e2d\u7b2ci\u5927\u7684\u6570.&nbsp;<\/p>\n<p>Example 1&nbsp;<\/p>\n<pre>N Transaction i Black Box contents after transaction Answer\n\n      (elements \u5347\u5e8f\u6392\u5217)\n\n1 ADD(3)      0 3\n\n2 GET         1 3                                    3\n\n3 ADD(1)      1 1, 3\n\n4 GET         2 1, 3                                 3\n\n5 ADD(-4)     2 -4, 1, 3\n\n6 ADD(2)      2 -4, 1, 2, 3\n\n7 ADD(8)      2 -4, 1, 2, 3, 8\n\n8 ADD(-1000)  2 -1000, -4, 1, 2, 3, 8\n\n9 GET         3 -1000, -4, 1, 2, 3, 8                1\n\n10 GET        4 -1000, -4, 1, 2, 3, 8                2\n\n11 ADD(2)     4 -1000, -4, 1, 2, 2, 3, 8   <\/pre>\n<p>\nADD \u548c GET \u64cd\u4f5c\u6570\u4e0d\u8d85\u8fc7 30000 .&nbsp;<\/p>\n<p>\u64cd\u4f5c\u63cf\u8ff0\u5982\u4e0b\uff1a<br \/>\n1. A(1), A(2), ..., A(M): Add \u5e8f\u5217\uff0c|x|\u22642 000 000 000 , M &lt;= 30000. \u6837\u4f8b\u4e2d A=(3, 1, -4, 2, 8, -1000, 2).&nbsp;<\/p>\n<p>2. u(1), u(2), ..., u(N):GET\u7684\u8be2\u95ee\u65f6\u95f4\uff0c\u7b2ci\u4e2aGET\u5c06\u5728\u7b2cu(i)\u8bfb\u5b8c\u540e\u6267\u884c.\u6837\u4f8b\u4e2d u=(1, 2, 6, 6).&nbsp;<\/p>\n<\/div>\n<p class=\"pst\" style=\"font-size:18pt; font-weight:bold; color:blue\">Input<\/p>\n<div class=\"ptx\" lang=\"en-US\" style=\"font-family:'Times New Roman',Times,serif; font-size:12pt\">\n\u7b2c\u4e00\u884c: M, N, \u7b2c\u4e8c\u884c\u5e8f\u5217A, \u7b2c\u4e09\u884c\u5e8f\u5217u.<\/div>\n<p class=\"pst\" style=\"font-size:18pt; font-weight:bold; color:blue\">Output<\/p>\n<div class=\"ptx\" lang=\"en-US\" style=\"font-family:'Times New Roman',Times,serif; font-size:12pt\">\n\u7b2ci\u884c\u8f93\u51fa\u7b2ci\u4e2aGET\u7684\u8f93\u51fa<\/div>\n<p class=\"pst\" style=\"font-size:18pt; font-weight:bold; color:blue\">Sample Input<\/p>\n<pre class=\"sio\" style=\"font-family:'Courier New',Courier,monospace; font-size:12pt\">7 4\n3 1 -4 2 8 -1000 2\n1 2 6 6<\/pre>\n<p class=\"pst\" style=\"font-size:18pt; font-weight:bold; color:blue\">Sample Output<\/p>\n<pre class=\"sio\" style=\"font-family:'Courier New',Courier,monospace; font-size:12pt\">3\n3\n1\n2<\/pre>\n<p class=\"pst\" style=\"font-size:18pt; font-weight:bold; color:blue\">Source<\/p>\n<div class=\"ptx\" lang=\"en-US\" style=\"font-family:'Times New Roman',Times,serif; font-size:12pt\">\n<a href=\"http:\/\/poj.org\/searchproblem?field=source&amp;key=Northeastern+Europe+1996\" style=\"text-decoration:none\">Northeastern Europe 1996<\/a><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\">\u6b64\u9898\u53ef\u7528\u4e8c\u53c9\u641c\u7d22\u6811\u89e3\u51b3\u3002<\/span><\/p>\n<p><span style=\"font-size:14px\">\u4e8c\u53c9\u641c\u7d22\u6811\u7684\u5efa\u7acb\uff1a\u6bcf\u62ff\u5230\u4e00\u4e2a\u5143\u7d20\uff0c\u6bd4\u6839\u5c0f\u653e\u5728\u5de6\u6839\uff0c\u6bd4\u6839\u5927\u653e\u5728\u53f3\u6839\uff0c\u5426\u5219\u653e\u6839\u4e0a\u3002<\/span><\/p>\n<p><span style=\"font-size:14px\">t.weight \u8868\u793a\u7ed3\u70b9\u4e0a\u6709\u51e0\u4e2a\u6570, t.key\u8868\u793a\u6570\u7684&#20540; ,t.size\u8868\u793a\u4ee5\u8be5\u70b9\u4e3a\u6839\u7684\u6811\u4e0a\u6709\u591a\u5c11\u6570<\/span><\/p>\n<p><span style=\"font-size:14px\">\u91cd\u70b9\u662f\u5de6\u65cb\u548c\u53f3\u65cb\uff01<\/span><\/p>\n<p><span style=\"font-size:14px\">2\u4e2a\u6ce8\u610f\uff1a\u6ce8\u610f\u628aa\u7684\u7236\u4eb2\u7ed3\u70b9\u6539\u6389\uff0c\u6ce8\u610f\u628aa,b\u7684\u7236\u4eb2\u7ed3\u70b9\u6539\u6389<\/span><\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\">\u4e0b\u56fe\u8f6c\u8f7d\u81ea<a href=\"http:\/\/dongxicheng.org\/structure\/treap\/\">http:\/\/dongxicheng.org\/structure\/treap\/<\/a><\/span><\/p>\n<p>\n<\/p>\n<p><span style=\"font-size:14px\"><img decoding=\"async\" src=\"http:\/\/nike0good.jp1.rpvhost.net\/wp-content\/uploads\/csdn\/other_site\/img_my_1358419653_3573.png\" alt=\"\" \/><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><\/span><\/p>\n<pre name=\"code\" class=\"cpp\">#include&lt;cstdio&gt;\n#include&lt;cstdlib&gt;\n#include&lt;cstring&gt;\n#include&lt;cmath&gt;\n#include&lt;iostream&gt;\n#include&lt;algorithm&gt;\n#include&lt;functional&gt;\nusing namespace std;\n#define MAXM (30000+10)\n#define MAXN (30000+10)\nstruct tree_node\n{\n\tint key,fim,size,weight;\n\ttree_node *left,*right,*father;\n\tint l_size()\n\t{\n\t\treturn (left==NULL)?0:(left-&gt;size);\n\t}\n\tint r_size()\n\t{\n\t\treturn (right==NULL)?0:(right-&gt;size);\n\t}\n\tvoid count_size()\n\t{\n\t\t\/\/size=(left==NULL)?0:(left-&gt;size)+(right==NULL)?0:(right-&gt;size)+weight;\n\t\tsize=l_size()+r_size()+weight;\n\t}\n\ttree_node():key(0),fim(rand()),size(0),weight(0){left=right=father=NULL;}\n\ttree_node(int _key):key(_key),fim(rand()),size(1),weight(1){left=right=father=NULL;}\n};\ntree_node* newnode(int key)\n{\n\ttree_node* p;\n\tp=new tree_node;\n\t*p=tree_node(key);\n\treturn p;\n}\nstruct Treep\n{\n\ttree_node *root;\n\tTreep(){root=NULL;}\n\tvoid left_rotaue(tree_node *&amp;a)\n\t{\n\t\ttree_node* b=a-&gt;right;\n\t\ta-&gt;right=b-&gt;left;if (a-&gt;right!=NULL) a-&gt;right-&gt;father=a;\n\t\tb-&gt;left=a;b-&gt;father=a-&gt;father;a-&gt;father=b;\n\t\ta-&gt;count_size();\n\t\tb-&gt;count_size();\n\t\tif (b-&gt;father)\n\t\t{\n\t\t\tif (b-&gt;father-&gt;left==a) b-&gt;father-&gt;left=b;\n\t\t\telse b-&gt;father-&gt;right=b;\n\t\t}\n\t\ta=b;\n\t}\n\tvoid right_rotaue(tree_node *&amp;a)\n\t{\n\t\ttree_node* b=a-&gt;left;\n\t\ta-&gt;left=b-&gt;right;if (a-&gt;left!=NULL) a-&gt;left-&gt;father=a;\n\t\tb-&gt;right=a;\n\t\tb-&gt;father=a-&gt;father;\n\t\ta-&gt;father=b;\n\t\ta-&gt;count_size();\n\t\tb-&gt;count_size();\n\t\tif (b-&gt;father)\n\t\t{\n\t\t\tif (b-&gt;father-&gt;left==a) b-&gt;father-&gt;left=b;\n\t\t\telse b-&gt;father-&gt;right=b;\n\t\t}\n\t\ta=b;\n\t}\n\tvoid insert(int key)\n\t{\n\t\tif (root==NULL) {root=newnode(key);return;}\n\t\ttree_node *now=root;\n\t\twhile (1)\n\t\t{\n\t\t\tnow-&gt;size++;\n\t\t\tif (key==now-&gt;key) {now-&gt;weight++;break;}\n\t\t\telse if (key&lt;now-&gt;key)\n\t\t\t{\n\t\t\t\tif (now-&gt;left==NULL) {now-&gt;left=newnode(key);now-&gt;left-&gt;father=now; now=now-&gt;left; break;}\n\t\t\t\telse now=now-&gt;left;\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tif (now-&gt;right==NULL) {now-&gt;right=newnode(key);now-&gt;right-&gt;father=now; now=now-&gt;right; break;}\n\t\t\t\telse now=now-&gt;right;\n\t\t\t}\n\t\t}\n\t\tfor (;now!=root&amp;&amp;now-&gt;father-&gt;fim&lt;now-&gt;fim;)\n\t\t{\n\t\t\tif (now-&gt;key&lt;now-&gt;father-&gt;key) {now=now-&gt;father; right_rotaue(now);}\n\t\t\telse {now=now-&gt;father; left_rotaue(now); }\n\t\t\tif (now-&gt;father==NULL) root=now;\n\t\t}\n\n\t}\n\tint gets(int k)\n\t{\n\t\ttree_node* now=root;\n\t\twhile (1)\n\t\t{\n\t\t\tif (now-&gt;l_size()&gt;=k) {now=now-&gt;left;}\n\t\t\telse if (now-&gt;l_size()+now-&gt;weight&gt;=k) return now-&gt;key;\n\t\t\telse {k-=now-&gt;l_size()+now-&gt;weight; now=now-&gt;right;}\n\t\t}\n\t}\n\tvoid print(tree_node *now)\n\t{\n\t\tif (now-&gt;left!=NULL)\n\t\t{\n\t\t\tcout&lt;&lt;&quot;( &quot;;\n\t\t\tprint(now-&gt;left);\n\t\t\tcout&lt;&lt;&quot; )&quot;;\n\t\t}\n\t\tcout&lt;&lt;&quot; &quot;&lt;&lt;now-&gt;key&lt;&lt;&quot; &quot;;\n\t\tif (now-&gt;right!=NULL)\n\t\t{\n\t\t\tcout&lt;&lt;&quot;( &quot;;\n\t\t\tprint(now-&gt;right);\n\t\t\tcout&lt;&lt;&quot; )&quot;;\n\t\t}\n\n\n\t}\n}t;\nint n,m,a[MAXN],u[MAXM];\nint main()\n{\n\/\/\tfreopen(&quot;poj1442.in&quot;,&quot;r&quot;,stdin);\n\tcin&gt;&gt;n&gt;&gt;m;\n\tfor (int i=1;i&lt;=n;i++) cin&gt;&gt;a[i];\n\tfor (int i=1;i&lt;=m;i++) cin&gt;&gt;u[i];\n\tfor (int i=1,j=1;i&lt;=n;i++)\n\t{\n\t\tt.insert(a[i]);\/\/t.print(t.root);cout&lt;&lt;endl;\n\t\twhile (j&lt;=m&amp;&amp;i==u[j]) {cout&lt;&lt;t.gets(j)&lt;&lt;endl;j++;}\n\t}\n\treturn 0;\n}<\/pre>\n<\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-size:14px; color:#333399; font-family:Simsun; font-size:14px\"><\/span><\/p>\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Language: Default Black Box Time Limit:&nbsp;1000MS &#038;nb [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[3],"tags":[48],"class_list":["post-304","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-treap"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>POJ 1442(Treap) - nike0good<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nike0good.com\/?p=304\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"POJ 1442(Treap) - nike0good\" 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