{"id":30502,"date":"2023-10-26T11:18:52","date_gmt":"2024-01-19T16:41:54","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e9%ab%98%e4%bd%8e%e7%89%8c%e6%b8%b8%e6%88%8f\/"},"modified":"2025-08-12T19:28:52","modified_gmt":"2025-08-12T11:28:52","slug":"php%e9%ab%98%e4%bd%8e%e7%89%8c%e6%b8%b8%e6%88%8f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e9%ab%98%e4%bd%8e%e7%89%8c%e6%b8%b8%e6%88%8f\/","title":{"rendered":"PHP\u9ad8\u4f4e\u724c\u6e38\u620f"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u8fd9\u662f\u4e00\u4e2a\u5728paiza\u4e0a\u5173\u4e8eHigh and Low\u7eb8\u724c\u6e38\u620f\u95ee\u9898\u7684\u5907\u5fd8\u5f55\u3002<br \/>\n\u5efa\u8bae\u53ea\u6709\u95ee\u9898\u5df2\u89e3\u51b3\u6216\u8005\u4e0d\u6e05\u695a\u7684\u4eba\u9605\u8bfb\u3002<\/p>\n<h1>Paiza C\u95ee\u9898\u662f\u4e00\u4e2a\u9ad8\u4f4e\u724c\u6e38\u620f\u7684\u95ee\u9898\u63cf\u8ff0\u3002<\/h1>\n<p>\u6d3e\u5179\u5361\u724c\u6e38\u620f\u662f\u4e00\u79cd\u4ee5\u591a\u5f20\u5b50\u5361\u548c\u4e00\u5f20\u7236\u5361\u4e4b\u95f4\u7684\u5f3a\u5f31\u5173\u7cfb\u6765\u51b3\u5b9a\u80dc\u8d1f\u7684\u6e38\u620f\u3002<br \/>\n\u6bcf\u5f20\u5361\u4e0a\u90fd\u6709\u4e24\u4e2a\u6570\u5b57\u3002<br \/>\n\u7b2c\u4e00\u4e2a\u6570\u5b57\u662f\u4ece1\u523010\u7684\u6574\u6570\uff0c\u7b2c\u4e8c\u4e2a\u6570\u5b57\u662f\u4ece1\u52304\u7684\u6574\u6570\u3002<br \/>\n\u800c\u4e14\uff0c\u6bcf\u5bf9\u6570\u5b57\u7ec4\u5408\u53ea\u5305\u62ec\u4e00\u5f20\u5361\u7247\u3002 \uff08\u6ca1\u6709\u76f8\u540c\u7684\u5361\u7247\u8d85\u8fc7\u4e24\u5f20\uff09<\/p>\n<p>\u4e24\u5f20\u724c\u7684\u5f3a\u5f31\u5173\u7cfb\u7531\u4ee5\u4e0b\u89c4\u5219\u786e\u5b9a\uff1a<br \/>\n&#8211; \u7b2c\u4e00\u4e2a\u6570\u5b57\u8f83\u5927\u7684\u724c\u66f4\u5f3a<br \/>\n&#8211; \u5982\u679c\u7b2c\u4e00\u4e2a\u6570\u5b57\u76f8\u540c\uff0c\u5219\u7b2c\u4e8c\u4e2a\u6570\u5b57\u8f83\u5c0f\u7684\u724c\u66f4\u5f3a\u3002<\/p>\n<p>\u8bf7\u6839\u636e\u6240\u63d0\u4f9b\u7684\u4eb2\u5361\u548c\u5b50\u5361\u4fe1\u606f\uff0c\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f\u6765\u68c0\u67e5\u5b83\u4eec\u4e4b\u95f4\u7684\u5f3a\u5f31\u5173\u7cfb\u3002<\/p>\n<h1>\u8f93\u5165\u7684\u503c de zh\u00ed)<\/h1>\n<pre class=\"post-pre\"><code>a b\r\nn\r\nA_1 B_1\r\n\u2026\r\nA_n B_n\r\n<\/code><\/pre>\n<p>\u7b2c\u4e00\u884c\u63d0\u4f9b\u4e86\u4e3b\u5361\u7684\u4fe1\u606f\u3002\u4e3b\u5361\u7684\u7b2c\u4e00\u4e2a\u7f16\u53f7\u662fa\uff0c\u7b2c\u4e8c\u4e2a\u7f16\u53f7\u662fb\u3002<br \/>\n\u7b2c\u4e8c\u884c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6574\u6570n\u3002<br \/>\n\u4ece\u7b2c\u4e09\u884c\u5f00\u59cb\u7684n\u884c\u8f93\u5165\u7ee7\u7eed\uff0c\u6bcf\u884c\u63d0\u4f9b\u4e86\u5b50\u5361i\uff081\u2266i\u2266n\uff09\u7684\u4fe1\u606f\u3002<br \/>\n\u5b50\u5361i\u7684\u7b2c\u4e00\u4e2a\u7f16\u53f7\u662fA_i\uff0c\u7b2c\u4e8c\u4e2a\u7f16\u53f7\u662fB_i\u3002<\/p>\n<h1>\u671f\u5f85\u7684\u8f93\u51fa<\/h1>\n<p>\u8bf7\u5728\u8f93\u51fa\u7684\u7b2ci\u884c\u4e2d\uff0c\u5f53\u68c0\u67e5\u5230\u7236\u5361\u548c\u5b50\u5361i\u7684\u5f3a\u5f31\u5173\u7cfb\u65f6\uff0c\u82e5\u7236\u5361\u5f3a\uff0c\u5219\u8f93\u51fa&#8221;High&#8221;\uff0c\u5426\u5219\u8f93\u51fa&#8221;Low&#8221;\u3002<br \/>\n\u6bcf\u884c\u4e0d\u80fd\u5305\u542b\u9664&#8221;High&#8221;\u6216&#8221;Low&#8221;\u4ee5\u5916\u7684\u989d\u5916\u5b57\u7b26\u6216\u7a7a\u683c\u3002<br \/>\n\u6700\u540e\u8981\u6362\u884c\uff0c\u5e76\u4e14\u4e0d\u80fd\u5305\u542b\u591a\u4f59\u7684\u5b57\u7b26\u6216\u7a7a\u884c\u3002<\/p>\n<h1>\u8bf7\u91cd\u65b0\u9610\u8ff0\u4f60\u7684\u95ee\u9898\uff0c\u56e0\u4e3a\u201c\u6761\u4ef6\u201d\u4e00\u8bcd\u672c\u8eab\u5df2\u7ecf\u662f\u4e2d\u6587\u3002<\/h1>\n<p>\u6240\u6709\u7684\u6d4b\u8bd5\u6848\u4f8b\u90fd\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\u3002<\/p>\n<p>\u30fb1 \u2264 a \u2264 10<br \/>\n\u00b71 \u2264 A_i \u2264 10<br \/>\n\u00b71 \u2264 b \u2264 4<br \/>\n\u00b71 \u2264 B_i \u2264 4<br \/>\n\u00b71 \u2264 n &lt; 40<\/p>\n<p>\u4e00 \u2264 a \u2264 \u5341<br \/>\n\u4e00 \u2264 A_i \u2264 \u5341<br \/>\n\u4e00 \u2264 b \u2264 \u56db<br \/>\n\u4e00 \u2264 B_i \u2264 \u56db<br \/>\n\u4e00 \u2264 n &lt; \u56db\u5341<\/p>\n<h1>\u76f4\u5230\u89e3\u51b3\u95ee\u9898\u4e3a\u6b62\u7684\u6b65\u9aa41\u3002<\/h1>\n<p>\u9996\u5148\u83b7\u53d6\u6bcd\u5361\u548c\u5b50\u5361\u7684\u6b21\u6570\u3002<br \/>\n\u6bcd\u5361\u7684\u6570\u5b57\u662f\u4ee5\u7a7a\u683c\u5206\u9694\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u5c06\u5176\u5206\u522b\u83b7\u53d6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$parent<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">explode<\/span><span class=\"p\">(<\/span><span class=\"s1\">' '<\/span><span class=\"p\">,<\/span><span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"no\">STDIN<\/span><span class=\"p\">)));<\/span>\r\n<span class=\"nv\">$times<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"no\">STDIN<\/span><span class=\"p\">));<\/span>\r\n<\/code><\/pre>\n<h1>\u76f4\u5230\u89e3\u51b3\u4e3a\u6b62\u7684\u987a\u5e8f2<\/h1>\n<p>\u9700\u8981\u5728for\u5faa\u73af\u4e2d\u91cd\u590d$times\u6b21\uff0c\u5e76\u4e14\u6bcf\u6b21\u91cd\u590d\u90fd\u9700\u8981\u83b7\u53d6\u5b50\u5361\u7247\uff0c\u65b9\u5f0f\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">for<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$i<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$i<\/span> <span class=\"o\">&lt;<\/span> <span class=\"nv\">$times<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$i<\/span><span class=\"o\">++<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$children<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">explode<\/span><span class=\"p\">(<\/span><span class=\"s1\">' '<\/span><span class=\"p\">,<\/span><span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"no\">STDIN<\/span><span class=\"p\">)));<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u89e3\u51b3\u7684\u987a\u5e8f3<\/h1>\n<p>\u9700\u8981\u5728for\u5faa\u73af\u4e2d\u5d4c\u5165if\u8bed\u53e5\uff0c\u7f16\u5199\u5f53\u7236\u5361\u7247\u83b7\u80dc\u65f6\u7684if\u8bed\u53e5\u3002<br \/>\n\u5177\u4f53\u6765\u8bf4\uff0c\u5f53\u7236\u5361\u7247\u7684\u7b2c\u4e00\u5f20\u724c\u5927\u4e8e\u5b50\u5361\u7247\u7684\u7b2c\u4e00\u5f20\u724c\u6216\u8005\u4e24\u5f20\u724c\u7684\u6570\u5b57\u76f8\u7b49\u4e14\u7236\u5361\u7247\u7684\u7b2c\u4e8c\u5f20\u724c\u5c0f\u4e8e\u5b50\u5361\u7247\u7684\u7b2c\u4e8c\u5f20\u724c\u65f6\uff0c\u7236\u5361\u7247\u83b7\u80dc\u3002\u56e0\u6b64\uff0c\u5728if\u8bed\u53e5\u4e2d\u9700\u8981\u52a0\u5165||\u548c&amp;&amp;\u8fdb\u884c\u63cf\u8ff0\u3002<br \/>\n\u9664\u6b64\u4e4b\u5916\uff0c\u5176\u4ed6\u60c5\u51b5\u90fd\u662f\u5931\u8d25\u7684\uff08LOW\uff09\uff0c\u6240\u4ee5\u53ef\u4ee5\u4f7f\u7528else\u8bed\u53e5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$parent<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$children<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">||<\/span> <span class=\"nv\">$parent<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">==<\/span> <span class=\"nv\">$children<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"nv\">$parent<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">&lt;<\/span> <span class=\"nv\">$children<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">])<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s2\">\"High\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">else<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s2\">\"Low\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h1>\u8bf7\u7528\u4e2d\u6587\u5b8c\u6210\u4ee5\u4e0b\u6587\u7ae0<\/h1>\n<p>\u5982\u679c\u4ee3\u7801\u4e2d\u6709\u4efb\u4f55\u9519\u8bef\u6216\u8005\u9700\u8981\u6539\u8fdb\u7684\u5730\u65b9\uff0c\u8bf7\u6307\u6b63\u3002\u975e\u5e38\u611f\u8c22\u60a8\u7684\u89c2\u770b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$parent<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">explode<\/span><span class=\"p\">(<\/span><span class=\"s1\">' '<\/span><span class=\"p\">,<\/span><span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"no\">STDIN<\/span><span class=\"p\">)));<\/span>\r\n<span class=\"nv\">$times<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"no\">STDIN<\/span><span class=\"p\">));<\/span>\r\n\r\n<span class=\"k\">for<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$i<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$i<\/span> <span class=\"o\">&lt;<\/span> <span class=\"nv\">$times<\/span><span class=\"p\">;<\/span> <span class=\"nv\">$i<\/span><span class=\"o\">++<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$children<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">explode<\/span><span class=\"p\">(<\/span><span class=\"s1\">' '<\/span><span class=\"p\">,<\/span><span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nb\">fgets<\/span><span class=\"p\">(<\/span><span class=\"no\">STDIN<\/span><span class=\"p\">)));<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$parent<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$children<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">||<\/span> <span class=\"nv\">$parent<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">==<\/span> <span class=\"nv\">$children<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"nv\">$parent<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">&lt;<\/span> <span class=\"nv\">$children<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">])<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">echo<\/span> <span class=\"s2\">\"High\"<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">else<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"k\">echo<\/span> <span class=\"s2\">\"Low\"<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u8fd9\u662f\u4e00\u4e2a\u5728paiza\u4e0a\u5173\u4e8eHigh and Low\u7eb8\u724c\u6e38\u620f\u95ee\u9898\u7684\u5907\u5fd8\u5f55\u3002 \u5efa\u8bae\u53ea\u6709\u95ee\u9898\u5df2\u89e3\u51b3\u6216\u8005\u4e0d\u6e05\u695a\u7684 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30502","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PHP\u9ad8\u4f4e\u724c\u6e38\u620f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u9ad8\u4f4e\u724c\u6e38\u620f\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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