{"id":99,"date":"2026-08-29T23:24:54","date_gmt":"2026-08-29T15:24:54","guid":{"rendered":"https:\/\/done.baka233.top\/?p=99"},"modified":"2026-08-29T23:24:54","modified_gmt":"2026-08-29T15:24:54","slug":"8-29-%e6%97%a5%e5%bf%97","status":"publish","type":"post","link":"https:\/\/done.baka233.top\/index.php\/2026\/08\/29\/8-29-%e6%97%a5%e5%bf%97\/","title":{"rendered":"8.29 \u65e5\u5fd7"},"content":{"rendered":"<h3>\u9898\u76ee &#8211; <a href=\"https:\/\/www.luogu.com.cn\/problem\/P1128\">luoguP1128<\/a><\/h3>\n<p>\u627e\u51fa\uff1a\u4ece\u7ed3\u70b9$1$\u51fa\u53d1\uff0c\u7ecf\u8fc7\u5176\u4ed6$n-1$\u4e2a\u7ed3\u70b9\u4e00\u6b21\u540e\uff0c\u518d\u56de\u5230\u7ed3\u70b9$1$\u7684\u6700\u77ed\u8def\u3002<\/p>\n<p>\u89c2\u5bdf\u6570\u636e\u8303\u56f4\u6216\u8005\u6807\u7b7e\uff0c\u8003\u8651\u72b6\u538bDP\u3002\u7528$n$\u4f4d\u4e8c\u8fdb\u5236\u6570\u8868\u793a\u7ed3\u70b9\u8bbf\u95ee\u72b6\u6001\uff0c$0$\u8868\u793a\u672a\u8bbf\u95ee\uff0c$1$\u8868\u793a\u5df2\u8bbf\u95ee\u3002\u8bbe${f}_{i,\\, j}$\u8868\u793a\u4ece\u7ed3\u70b9$1$\u5230\u7ed3\u70b9$j$\uff0c\u72b6\u6001\u4e3a$i$\u7684\u6700\u77ed\u8def\u3002\u5bf9\u4e8e\u6bcf\u4e00\u4e2a01\u72b6\u6001\uff0c\u7528\u201c1\u4f4d\u201d\u66f4\u65b0\u201c0\u4f4d\u201d\uff0c\u5373\u7531\u5df2\u8bbf\u95ee\u7684\u7ed3\u70b9\u66f4\u65b0\u672a\u8bbf\u95ee\u7684\u7ed3\u70b9\u3002\u6700\u540e\u627e\u6700\u77ed\u8def\u65f6\u8fd8\u8981\u52a0\u4e0a\u56de\u53bb\u7684\u8def\u3002<\/p>\n<pre class=\"code\">int solve(){\r\n    memset(f, 0x3f, sizeof f);\r\n    f[1][1] = 0; \/\/ \u4e00\u5f00\u59cb\u5c31\u662f\u4ece1\u51fa\u53d1\u7684\r\n    for(int i = 0; i &lt; (1 &lt;&lt; n); i++){ \/\/ \u6bcf\u79cd01\u72b6\u6001\r\n        for(int j = 0; j &lt; n; j++){\r\n            if((i &gt;&gt; j) &amp; 1) continue; \/\/ \u5148\u627e0\u4f4d\r\n            for(int k = 0; k &lt; n; k++){\r\n                if((i &gt;&gt; k) &amp; 1){ \/\/ \u518d\u627e1\u4f4d\r\n                    int&amp; t = f[i | (1 &lt;&lt; j)][j + 1];\r\n                    t = min(t, f[i][k + 1] + dis[k + 1][j + 1]);\r\n                }\r\n            }\r\n        }\r\n    }\r\n    int res = 2e9;\r\n    for(int i = 2; i &lt;= n; i++){\r\n        res = min(res, f[(1 &lt;&lt; n) - 1][i] + dis[i][1]); \/\/ \u8981\u52a0\u4e0a\u56de\u53bb\u7684dis[i][1]\r\n    }\r\n    return res;\r\n}<\/pre>\n<h3>\u540e\u8bdd<\/h3>\n<p>\u8fd9\u9053\u72b6\u538bDP\u989d\u5916\u8bb0\u5f55\u4e86\u4e00\u4e0b\uff0c\u542c\u8bf4\u5f88\u7ecf\u5178\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9898\u76ee &#8211; luoguP1128 \u627e\u51fa\uff1a\u4ece\u7ed3\u70b9$1$\u51fa\u53d1\uff0c\u7ecf\u8fc7\u5176\u4ed6$n-1$\u4e2a\u7ed3\u70b9\u4e00\u6b21\u540e\uff0c\u518d\u56de\u5230\u7ed3\u70b9 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-99","post","type-post","status-publish","format-standard","hentry","category-5"],"_links":{"self":[{"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/posts\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":0,"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/posts\/99\/revisions"}],"wp:attachment":[{"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/media?parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/categories?post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/done.baka233.top\/index.php\/wp-json\/wp\/v2\/tags?post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}