{"id":5431,"date":"2021-07-21T00:25:30","date_gmt":"2021-07-20T16:25:30","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5431"},"modified":"2021-07-21T00:25:30","modified_gmt":"2021-07-20T16:25:30","slug":"%e8%bf%b7%e5%ae%ab%e5%af%bb%e8%b7%af","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5431","title":{"rendered":"\u8ff7\u5bab\u5bfb\u8def"},"content":{"rendered":"<div class=\"section-box\" data-v-94fd4448=\"\">\n<h2 class=\"section-title\" data-v-94fd4448=\"\">\u63cf\u8ff0<\/h2>\n<div class=\"section-content\" data-v-94fd4448=\"\">\n<p>\u5b9a\u4e49\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4N*M\uff08\u5176\u4e2d2&lt;=N&lt;=10;2&lt;=M&lt;=10\uff09\uff0c\u59825\u00a0\u00d7\u00a05\u6570\u7ec4\u4e0b\u6240\u793a\uff1a<\/p>\n<p>int\u00a0maze[5][5]\u00a0=\u00a0{<br \/>\n0,\u00a01,\u00a00,\u00a00,\u00a00,<br \/>\n0,\u00a01,\u00a01,\u00a01,\u00a00,<br \/>\n0,\u00a00,\u00a00,\u00a00,\u00a00,<br \/>\n0,\u00a01,\u00a01,\u00a01,\u00a00,<br \/>\n0,\u00a00,\u00a00,\u00a01,\u00a00,<br \/>\n};<\/p>\n<p>\u5b83\u8868\u793a\u4e00\u4e2a\u8ff7\u5bab\uff0c\u5176\u4e2d\u76841\u8868\u793a\u5899\u58c1\uff0c0\u8868\u793a\u53ef\u4ee5\u8d70\u7684\u8def\uff0c\u53ea\u80fd\u6a2a\u7740\u8d70\u6216\u7ad6\u7740\u8d70\uff0c\u4e0d\u80fd\u659c\u7740\u8d70\uff0c\u8981\u6c42\u7f16\u7a0b\u5e8f\u627e\u51fa\u4ece\u5de6\u4e0a\u89d2\u5230\u53f3\u4e0b\u89d2\u7684\u6700\u77ed\u8def\u7ebf\u3002\u5165\u53e3\u70b9\u4e3a[0,0],\u65e2\u7b2c\u4e00\u683c\u662f\u53ef\u4ee5\u8d70\u7684\u8def\u3002<\/p>\n<div><\/div>\n<div>\u672c\u9898\u542b\u6709\u591a\u7ec4\u6570\u636e\u3002<\/div>\n<\/div>\n<h3 class=\"section-sub-title\" data-v-94fd4448=\"\">\u8f93\u5165\u63cf\u8ff0\uff1a<\/h3>\n<div class=\"section-content\" data-v-94fd4448=\"\">\n<p>\u8f93\u5165\u4e24\u4e2a\u6574\u6570\uff0c\u5206\u522b\u8868\u793a\u4e8c\u7ef4\u6570\u7ec4\u7684\u884c\u6570\uff0c\u5217\u6570\u3002\u518d\u8f93\u5165\u76f8\u5e94\u7684\u6570\u7ec4\uff0c\u5176\u4e2d\u76841\u8868\u793a\u5899\u58c1\uff0c0\u8868\u793a\u53ef\u4ee5\u8d70\u7684\u8def\u3002\u6570\u636e\u4fdd\u8bc1\u6709\u552f\u4e00\u89e3,\u4e0d\u8003\u8651\u6709\u591a\u89e3\u7684\u60c5\u51b5\uff0c\u5373\u8ff7\u5bab\u53ea\u6709\u4e00\u6761\u901a\u9053\u3002<\/p>\n<\/div>\n<h3 class=\"section-sub-title\" data-v-94fd4448=\"\">\u8f93\u51fa\u63cf\u8ff0\uff1a<\/h3>\n<div class=\"section-content\" data-v-94fd4448=\"\">\n<p>\u5de6\u4e0a\u89d2\u5230\u53f3\u4e0b\u89d2\u7684\u6700\u77ed\u8def\u5f84\uff0c\u683c\u5f0f\u5982\u6837\u4f8b\u6240\u793a\u3002<\/p>\n<\/div>\n<\/div>\n<div class=\"section-box\" data-v-94fd4448=\"\">\n<h2 class=\"section-title\" data-v-94fd4448=\"\">\u793a\u4f8b1<\/h2>\n<div class=\"question-sample section-content\" data-v-94fd4448=\"\">\n<div class=\"sample-item flex-row\" data-v-94fd4448=\"\"><span class=\"flex-none acm\" data-v-94fd4448=\"\">\u8f93\u5165\uff1a<\/span><\/p>\n<pre data-v-94fd4448=\"\">5 5\r\n0 1 0 0 0\r\n0 1 1 1 0\r\n0 0 0 0 0\r\n0 1 1 1 0\r\n0 0 0 1 0\r\n<\/pre>\n<p><button class=\"btn-copy flex-none\" data-v-94fd4448=\"\">\u590d\u5236<\/button><\/div>\n<div class=\"sample-item flex-between\" data-v-94fd4448=\"\"><span class=\"flex-none acm\" data-v-94fd4448=\"\">\u8f93\u51fa\uff1a<\/span><\/p>\n<pre data-v-94fd4448=\"\">(0,0)\r\n(1,0)\r\n(2,0)\r\n(2,1)\r\n(2,2)\r\n(2,3)\r\n(2,4)\r\n(3,4)\r\n(4,4)\r\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#include &lt;iostream&gt;\r\n#include &lt;vector&gt;\r\n#include &lt;set&gt;\r\n\r\nstd::pair&lt;int, int&gt; get_next_pos(const std::pair&lt;int, int&gt;&amp; pos, int i) {\r\n    switch (i) {\r\n        case 0: return std::make_pair(pos.first - 1, pos.second);\r\n        case 1: return std::make_pair(pos.first, pos.second + 1);\r\n        case 2: return std::make_pair(pos.first + 1, pos.second);\r\n        case 3: return std::make_pair(pos.first, pos.second - 1);\r\n    }\r\n}\r\n\r\nbool find_path(const std::vector&lt;std::vector&lt;int&gt;&gt;&amp; matrix,\r\n               const std::pair&lt;int, int&gt;&amp; cur, \r\n               std::vector&lt;std::pair&lt;int, int&gt;&gt;&amp; result,\r\n               std::set&lt;std::pair&lt;int, int&gt;&gt;&amp; visited) {\r\n    if (cur.first &lt; 0 || cur.first &gt;= matrix.size() ||\r\n       cur.second &lt; 0 || cur.second &gt;= matrix[0].size() ||\r\n        matrix[cur.first][cur.second] == 1) {\r\n        return false;\r\n    }\r\n    \r\n    if (cur.first == matrix.size() - 1 &amp;&amp;\r\n        cur.second == matrix[0].size() - 1) {\r\n        return true;\r\n    }\r\n    \r\n    for (int i = 0; i &lt; 4; i++) {\r\n        auto pos = get_next_pos(cur, i);\r\n        if (visited.find(pos) != visited.end()) {\r\n            continue;\r\n        }\r\n        \r\n        visited.insert(pos);\r\n        if (find_path(matrix, pos, result, visited)) {\r\n            result.push_back(pos);\r\n            return true;\r\n        }\r\n    }\r\n    \r\n    return false;\r\n}\r\n\r\nstd::vector&lt;std::pair&lt;int, int&gt;&gt; get_result(const std::vector&lt;std::vector&lt;int&gt;&gt;&amp; matrix) {\r\n    std::vector&lt;std::pair&lt;int, int&gt;&gt; result;\r\n    std::set&lt;std::pair&lt;int, int&gt;&gt; visited;\r\n    auto start_pos = std::make_pair(0, 0);\r\n    if (find_path(matrix, start_pos, result, visited)) {\r\n        result.push_back(start_pos);\r\n    }\r\n    return result;\r\n}\r\n\r\nint main() {\r\n    int m,n;\r\n    while (std::cin &gt;&gt; m &gt;&gt; n) {\r\n        std::vector&lt;std::vector&lt;int&gt;&gt; matrix(m, std::vector&lt;int&gt;(n, 0));\r\n        for (int i = 0; i &lt; m; i++) {\r\n            for (int j = 0; j &lt; n; j++) {\r\n                std::cin &gt;&gt; matrix[i][j];\r\n            }\r\n        }\r\n        \r\n        auto result = get_result(matrix);\r\n        for (int i = result.size() - 1; i &gt;= 0; i--) {\r\n            const auto&amp; p = result[i];\r\n            std::cout &lt;&lt; \"(\" &lt;&lt; p.first &lt;&lt; \",\" &lt;&lt; p.second &lt;&lt; \")\" &lt;&lt; std::endl;\r\n        }\r\n    }\r\n    \r\n    return 0;\r\n}\r\n<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63cf\u8ff0 \u5b9a\u4e49\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4N*M\uff08\u5176\u4e2d2&#038;l<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[120],"class_list":["post-5431","post","type-post","status-publish","format-standard","hentry","tag-04-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5431","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=5431"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5431\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=5431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=5431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=5431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}