{"id":280,"date":"2011-12-11T23:50:04","date_gmt":"2011-12-11T15:50:04","guid":{"rendered":"http:\/\/ykyi.net\/?p=280"},"modified":"2011-12-11T23:50:04","modified_gmt":"2011-12-11T15:50:04","slug":"%e4%b8%ad%e5%a4%a7sicily-1426-phone-list-%e8%a7%a3%e9%a2%98%e6%8a%a5%e5%91%8a","status":"publish","type":"post","link":"https:\/\/ykyi.net\/?p=280","title":{"rendered":"\u4e2d\u5927sicily 1426. Phone List \u89e3\u9898\u62a5\u544a"},"content":{"rendered":"
\n

 <\/p>\n

1.\u539f\u9898\u4e2d\u6587\u5927\u610f;<\/div>\n
 <\/div>\n
\u7ed9\u51fa\u4e00\u7ec4\u6570\u5b57\uff0c\u6700\u591a\u4e00\u4e07\u4e2a\uff0c\u5224\u65ad\u8fd9\u7ec4\u6570\u5b57\u4e2d\u662f\u5426\u5b58\u5728\u4e00\u4e2a\u6570\u5b57\u662f\u5176\u5b83\u4e00\u4e2a\u6570\u5b57\u7684\u524d\u7f00\u3002<\/div>\n
 <\/div>\n
2.\u7b97\u6cd5\u601d\u60f3\u53ca\u89e3\u9898\u7528\u5230\u7684\u4e3b\u8981\u6570\u636e\u7ed3\u6784;<\/div>\n
 <\/div>\n
\u6bcf\u8bfb\u5165\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u4e32\uff0c\u5219\u628a\u8be5\u6570\u5b57\u4e32\u4ece\u9ad8\u4f4d\u5230\u4f4e\u4f4d\u5206\u89e3\u6210\u4e00\u4e2a\u4e2a\u6570\u5b57\u5b57\u7b26\u3002\u7136\u540e\u5f00\u59cb\u4ee5\u6700\u9ad8\u4f4d\u6570\u5b57\u4e3a\u6811\u7684\u6839\uff0c\u7b2c\u4e8c\u4e2a\u6570\u5b57\u4e3a\u6839\u7684\u5b50\u5b59\u7ed3\u70b9\uff0c\u7b2c\u4e09\u4e2a\u6570\u5b57\u4e3a\u7b2c\u4e8c\u4e2a\u6570\u5b57\u7684\u5b50\u5b59\u7ed3\u70b9\u3002\u5982\u679c\u78b0\u5230\u6700\u540e\u4e00\u4e2a\u6570\u5b57\uff0c\u5982\u679c\u8fd9\u7ec4\u6570\u5b57\u7b26\u5408\u8981\u6c42\u7684\u8bdd\u5219\u6700\u540e\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u4e00\u5b9a\u662f\u53f6\u5b50\u7ed3\u70b9\u3002\u4e0d\u65ad\u7684\u52a0\u5165\u65b0\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u5230\u6811\u4e2d\uff0c\u5982\u679c\u5728\u52a0\u5165\u7684\u8fc7\u7a0b\u4e2d\u4f7f\u4ee5\u524d\u7684\u53f6\u5b50\u7ed3\u70b9\u53d8\u6210\u4e86\u975e\u53f6\u5b50\u7ed3\u70b9\uff0c\u6216\u8005\u65b0\u52a0\u5165\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u7684\u6700\u540e\u4e00\u4e2a\u6570\u5b57\u5728\u6811\u4e2d\u4e0d\u662f\u4e00\u4e2a\u53f6\u5b50\u7ed3\u70b9\uff0c\u5219\u62a5\u544a\u8fd9\u7ec4\u6570\u5b57\u5b57\u7b26\u4e32\u4e0d\u7b26\u5408\u8981\u6c42\u3002\u53cd\u4e4b\uff0c\u5219\u7b26\u5408\u8981\u6c42\u3002<\/div>\n
 <\/div>\n
3.\u9010\u6b65\u6c42\u7cbe\u7b97\u6cd5\u63cf\u8ff0\uff08\u542b\u8fc7\u7a0b\u53ca\u53d8\u91cf\u8bf4\u660e\uff09;<\/div>\n
 <\/div>\n
\u6bcf\u4e2a\u7ed3\u70b9\u8bb0\u4e0b\u5173\u952e\u4fe1\u606f,\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u3002\u518d\u52a0\u4e0a\u4e00\u4e2a\u6307\u5411\u5176\u5b83\u4fe1\u606f\u7684\u6307\u9488. \u8fd9\u4e2a\u6307\u9488\u6307\u5411\u4e00\u4e2anode_data_t\u7ed3\u6784\u3002\u7ed3\u6784\u4f53\u4e2d\u653e\u7f6e\u4e86\u4e00\u4e2atag\u6807\u7b7e\uff0c\u8bb0\u5b57\u662f\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u4e32\u7684\u6700\u540e\u4e00\u4e2a\u6570\u5b57\uff1b\u4ee5\u53ca\u4e00\u4e2a\u6307\u5411STL\u7684set\u5bb9\u5668\uff0c\u5bb9\u5668\u4e2d\u653e\u7f6e\u4e86\u6240\u6709\u5b50\u5b59\u7ed3\u70b9\u3002\u5982\u4e0b\u4ee3\u7801\u63cf\u8ff0\u3002<\/div>\n
 <\/div>\n
struct node_t<\/div>\n
 <\/div>\n
{<\/div>\n
 <\/div>\n
char _ch;<\/div>\n
 <\/div>\n
node_data_t* _data;<\/div>\n
 <\/div>\n
};<\/div>\n
 <\/div>\n
struct node_data_t<\/div>\n
 <\/div>\n
{<\/div>\n
 <\/div>\n
set<node_t, node_comp>  _nodes;<\/div>\n
 <\/div>\n
bool _terminal;<\/div>\n
 <\/div>\n
};<\/div>\n
 <\/div>\n
\u5269\u4e0b\u7684\u903b\u8f91\u4fbf\u662f\u5206\u6790\u6570\u5b57\u5b57\u7b26\u4e32\uff0c\u628a\u6bcf\u4e2a\u5b57\u7b26\u62c6\u51fa\u52a0\u5165\u6811\u4e2d\u3002<\/div>\n
 <\/div>\n
4.\u7a0b\u5e8f\u6ce8\u91ca\u6e05\u5355<\/div>\n
 <\/div>\n
\n
#include <set>\n\n#include <algorithm>\n\n#include <cstring>\n\n#include <cstdlib>\n\n#include <cstdio>\n\n\n\nusing namespace std;\n\n\n\nstruct node_comp;\n\nstruct node_data_t;\n\n\n\nstruct node_t\n\n{\n\nchar _ch;\n\nnode_data_t* _data;\n\n};\n\n\n\nstruct node_comp  \/\/ \u7ed9STL\u7684set\u5bb9\u5668\u7684\u6392\u5e8f\u7b97\u5b50\u3002\n\n{\n\nbool operator()(const node_t& left, const node_t& right)const\n\n{\n\nreturn left._ch < right._ch;\n\n}\n\n};\nhttp:\/\/ykyi.net zausiu's blog\nstruct node_data_t\n\n{\n\nset<node_t, node_comp>  _nodes;\n\nbool _terminal;  \/\/ \u6807\u8bb0\u662f\u4e0d\u662f\u4e00\u4e2a\u7535\u8bdd\u53f7\u7801\u7684\u7ec8\u70b9\u5b57\u7b26\u4e86\u3002\n\n};\n\n\n\ntypedef set<node_t, node_comp> nodes_set;\n\n\n\nnodes_set top_nodes;\n\n\n\n\/\/ \u5982\u679c\u5df2\u7ecf\u53ef\u4ee5\u5224\u65ad\u7535\u8bdd\u53f7\u7801\u4e0d\u6ee1\u8db3\u8981\u6c42\u5c31\u8fd4\u56defalse.\n\n\/\/ \u9012\u5f52\u8c03\u7528\u8be5\u51fd\u6570\u3002\n\nbool odyssey(nodes_set& nodes, const char* num)\n\n{\n\nif ( 0 == *num )\n\n{\n\nreturn true;\n\n}\n\n\/\/\n\nnode_t node;\n\nnode._ch = *num;\n\nnode._data = new node_data_t;\n\nnode._data->_terminal = !num[1];\n\n\n\npair<nodes_set::iterator, bool> retval = nodes.insert(node);\n\nif ( retval.second )  \/\/ \u8fd8\u6ca1\u6709\u8fd9\u4e2a\u6570\u5b57\u7684\u7ed3\u70b9.\u65b0\u63d2\u5165\u7684.\n\n{\n\nbool b;\n\nb = odyssey(retval.first->_data->_nodes, num+1);\n\nreturn b;\n\n}\n\nelse  \/\/ \u5df2\u7ecf\u5b58\u5728\n\n{\n\ndelete node._data;\n\n\/\/ \u5e76\u4e14\u5df2\u7ecf\u662f\u4e4b\u524d\u4e00\u4e2a\u6570\u5b57\u4e32\u7684\u6700\u540e\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26.\u6216\u8005\u73b0\u5728\u8fd9\u4e2a\u5b57\u7b26\u662f\u6700\u540e\u4e00\u4e2a.\n\nif ( retval.first->_data->_terminal || !num[1] )\n\n{\n\nreturn false;\n\n}\n\nelse if ( !num[1] )\n\n{\n\nretval.first->_data->_terminal = true;\n\nreturn true;\n\n}\n\nelse\n\n{\n\nretval.first->_data->_terminal = false;\n\nbool b;\n\nb = odyssey(retval.first->_data->_nodes, num+1); \/\/ \u9012\u5f52\n\nreturn b;\n\n}\n\n}\n\n}\n\n\/\/ \u91ca\u653e\u5185\u5b58.\n\nvoid free_mem(nodes_set& nodes)\n\n{\n\nfor ( nodes_set::const_iterator ite = nodes.begin();\n\nite != nodes.end();\n\n++ite )\n\n{\n\nfree_mem(ite->_data->_nodes);\n\ndelete ite->_data;\n\n}\n\nnodes.clear();\n\n}\n\n\n\nint main(int argc, char* argv[])\n\n{\n\nint case_count;   \/\/ \u6709\u591a\u5c11\u4e2acase\n\nint phone_num_count;    \/\/ \u591a\u5c11\u4e2a\u7535\u8bdd\u9716\u5df4\n\nchar phone_num_str[11];   \/\/ \u5b58\u7535\u8bdd\u9716\u5df4\n\nbool successed;  \/\/ \u4e00\u7ec4\u6570\u5b57\u5b57\u7b26\u4e32\u662f\u5426\u7b26\u5408\u8981\u6c42\n\n\n\nscanf("%d", &case_count);\n\nfor ( int i = 0; i < case_count; i++ )\n\n{\n\nscanf("%d", &phone_num_count);\n\n\n\nsuccessed = true;\n\nfor ( int j = 0; j < phone_num_count; j++ )\n\n{\n\nscanf("%s", phone_num_str);\n\n\n\nif ( successed )\n\n{\n\nsuccessed = odyssey(top_nodes, phone_num_str);\n\n}\n\n}\n\nif ( successed )\n\n{\n\nprintf("YES\\n");\n\n}\n\nelse\n\n{\n\nprintf("NO\\n");\n\n}\n\n\n\nfree_mem(top_nodes);\n\n}\n\n\n\nreturn 0;\n\n}\n<\/pre>\n
 <\/p>\n<\/p><\/div>\n
 <\/div>\n
5.\u6d4b\u8bd5\u6570\u636e<\/div>\n
 <\/div>\n
\u7528\u7b80\u5355\u7684\u811a\u672c\u5e2e\u52a9\u751f\u6210\u6d4b\u8bd5\u6570\u636e.<\/div>\n
 <\/div>\n
#!\/bin\/bash<\/div>\n
 <\/div>\n
INDEX=0<\/div>\n
 <\/div>\n
if [ -e $1 ];then<\/div>\n
 <\/div>\n
COUNT=200<\/div>\n
 <\/div>\n
else<\/div>\n
 <\/div>\n
COUNT=$1<\/div>\n
 <\/div>\n
fi<\/div>\n
 <\/div>\n
while [ INDEX -lt<\/span>COUNT ];do<\/div>\n
 <\/div>\n
let "INDEX=$INDEX+1"<\/div>\n
 <\/div>\n
echo $RANDOM<\/div>\n
 <\/div>\n
done<\/div>\n
 <\/div>\n
6.\u5bf9\u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u7a7a\u95f4\u590d\u6742\u5ea6\u65b9\u9762\u7684\u5206\u6790.<\/div>\n
 <\/div>\n
\u672c\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u7684\u7a7a\u95f4\u590d\u6742\u5ea6\u4e00\u822c\u90fd\u4ecb\u4e8eO(logN)\u548cO(N)\u4e4b\u95f4\u3002<\/div>\n
 <\/div>\n
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/ \u539f\u9898  \/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/div>\n
 <\/div>\n
1426. Phone List<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
Description<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
Given a list of phone numbers, determine if it is consistent in the sense that no number is the pre?x of another. Let’s say the phone catalogue listed these numbers:<\/div>\n
? Emergency 911<\/div>\n
? Alice 97 625 999<\/div>\n
? Bob 91 12 54 26<\/div>\n
In this case, it’s not possible to call Bob, because the central would direct your call to the emergency line as soon as you had dialled the ?rst three digits of Bob’s phone number. So this list would not be consistent.<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
Input<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
The ?rst line of input gives a single integer, 1 ≤ t ≤ 40, the number of test cases. Each test case starts with n, the number of phone numbers, on a separate line, 1 ≤ n ≤ 10000. Then follows n lines with one unique phone number on each line. A phone number is a sequence of at most ten digits.<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
Output<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
For each test case, output “YES” if the list is consistent, or “NO” otherwise.<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
Sample Input<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
2<\/div>\n
3<\/div>\n
911<\/div>\n
97625999<\/div>\n
91125426<\/div>\n
5<\/div>\n
113<\/div>\n
12340<\/div>\n
123440<\/div>\n
12345<\/div>\n
98346<\/div>\n
 <\/div>\n
 <\/div>\n
Sample Output<\/div>\n
 <\/div>\n
 <\/div>\n
 <\/div>\n
NO<\/div>\n
YES<\/div>\n
 <\/div>\n
 <\/div>\n<\/div>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
  1.\u539f\u9898\u4e2d\u6587\u5927\u610f;   \u7ed9\u51fa\u4e00\u7ec4\u6570\u5b57\uff0c\u6700\u591a\u4e00\u4e07\u4e2a\uff0c\u5224\u65ad\u8fd9\u7ec4\u6570\u5b57\u4e2d\u662f\u5426\u5b58\u5728\u4e00\u4e2a\u6570\u5b57\u662f\u5176\u5b83\u4e00\u4e2a\u6570\u5b57\u7684\u524d\u7f00\u3002   2.\u7b97\u6cd5\u601d\u60f3\u53ca\u89e3\u9898\u7528\u5230\u7684\u4e3b\u8981\u6570\u636e\u7ed3\u6784;   \u6bcf\u8bfb\u5165\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u4e32\uff0c\u5219\u628a\u8be5\u6570\u5b57\u4e32\u4ece\u9ad8\u4f4d\u5230\u4f4e\u4f4d\u5206\u89e3\u6210\u4e00\u4e2a\u4e2a\u6570\u5b57\u5b57\u7b26\u3002\u7136\u540e\u5f00\u59cb\u4ee5\u6700\u9ad8\u4f4d\u6570\u5b57\u4e3a\u6811\u7684\u6839\uff0c\u7b2c\u4e8c\u4e2a\u6570\u5b57\u4e3a\u6839\u7684\u5b50\u5b59\u7ed3\u70b9\uff0c\u7b2c\u4e09\u4e2a\u6570\u5b57\u4e3a\u7b2c\u4e8c\u4e2a\u6570\u5b57\u7684\u5b50\u5b59\u7ed3\u70b9\u3002\u5982\u679c\u78b0\u5230\u6700\u540e\u4e00\u4e2a\u6570\u5b57\uff0c\u5982\u679c\u8fd9\u7ec4\u6570\u5b57\u7b26\u5408\u8981\u6c42\u7684\u8bdd\u5219\u6700\u540e\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u4e00\u5b9a\u662f\u53f6\u5b50\u7ed3\u70b9\u3002\u4e0d\u65ad\u7684\u52a0\u5165\u65b0\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u5230\u6811\u4e2d\uff0c\u5982\u679c\u5728\u52a0\u5165\u7684\u8fc7\u7a0b\u4e2d\u4f7f\u4ee5\u524d\u7684\u53f6\u5b50\u7ed3\u70b9\u53d8\u6210\u4e86\u975e\u53f6\u5b50\u7ed3\u70b9\uff0c\u6216\u8005\u65b0\u52a0\u5165\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u7684\u6700\u540e\u4e00\u4e2a\u6570\u5b57\u5728\u6811\u4e2d\u4e0d\u662f\u4e00\u4e2a\u53f6\u5b50\u7ed3\u70b9\uff0c\u5219\u62a5\u544a\u8fd9\u7ec4\u6570\u5b57\u5b57\u7b26\u4e32\u4e0d\u7b26\u5408\u8981\u6c42\u3002\u53cd\u4e4b\uff0c\u5219\u7b26\u5408\u8981\u6c42\u3002   3.\u9010\u6b65\u6c42\u7cbe\u7b97\u6cd5\u63cf\u8ff0\uff08\u542b\u8fc7\u7a0b\u53ca\u53d8\u91cf\u8bf4\u660e\uff09;   \u6bcf\u4e2a\u7ed3\u70b9\u8bb0\u4e0b\u5173\u952e\u4fe1\u606f,\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u3002\u518d\u52a0\u4e0a\u4e00\u4e2a\u6307\u5411\u5176\u5b83\u4fe1\u606f\u7684\u6307\u9488. \u8fd9\u4e2a\u6307\u9488\u6307\u5411\u4e00\u4e2anode_data_t\u7ed3\u6784\u3002\u7ed3\u6784\u4f53\u4e2d\u653e\u7f6e\u4e86\u4e00\u4e2atag\u6807\u7b7e\uff0c\u8bb0\u5b57\u662f\u4e0d\u662f\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u4e32\u7684\u6700\u540e\u4e00\u4e2a\u6570\u5b57\uff1b\u4ee5\u53ca\u4e00\u4e2a\u6307\u5411STL\u7684set\u5bb9\u5668\uff0c\u5bb9\u5668\u4e2d\u653e\u7f6e\u4e86\u6240\u6709\u5b50\u5b59\u7ed3\u70b9\u3002\u5982\u4e0b\u4ee3\u7801\u63cf\u8ff0\u3002   struct node_t   {   char _ch;   node_data_t* _data;   };   struct node_data_t   {   set<node_t, node_comp>  _nodes;   bool _terminal;   };   \u5269\u4e0b\u7684\u903b\u8f91\u4fbf\u662f\u5206\u6790\u6570\u5b57\u5b57\u7b26\u4e32\uff0c\u628a\u6bcf\u4e2a\u5b57\u7b26\u62c6\u51fa\u52a0\u5165\u6811\u4e2d\u3002   4.\u7a0b\u5e8f\u6ce8\u91ca\u6e05\u5355   #include <set> #include <algorithm> #include <cstring> #include <cstdlib> #include <cstdio> … Continue reading “\u4e2d\u5927sicily 1426. Phone List \u89e3\u9898\u62a5\u544a”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[108],"class_list":["post-280","post","type-post","status-publish","format-standard","hentry","category-tech_articles","tag-108"],"_links":{"self":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=280"}],"version-history":[{"count":0,"href":"https:\/\/ykyi.net\/index.php?rest_route=\/wp\/v2\/posts\/280\/revisions"}],"wp:attachment":[{"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ykyi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}