{"id":697,"date":"2013-02-27T11:13:57","date_gmt":"2013-02-27T03:13:57","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=697"},"modified":"2013-02-27T11:13:57","modified_gmt":"2013-02-27T03:13:57","slug":"srm-474","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/srm-474\/","title":{"rendered":"SRM 474"},"content":{"rendered":"<p><!--more--><\/p>\n<pre class=\"brush: cpp; light: false; title: ; toolbar: true; notranslate\" title=\"\">\r\nstruct Int{\r\n    int val;\r\n\r\n    operator int() const{return val;}\r\n\r\n    Int(int val = 0):val(val){\r\n        val %= MOD; if (val &lt; 0) val += MOD;\r\n    }\r\n    inline Int&amp; operator +=(const Int&amp; rhs){\r\n        INC(val, rhs);\r\n        return *this;\r\n    }\r\n    inline Int operator +(const Int&amp; rhs) const{\r\n        return sum(val, rhs.val);\r\n    }\r\n    inline Int operator -(const Int&amp; rhs) const{\r\n        return dff(val, rhs);\r\n    }\r\n    inline Int&amp; operator *=(const Int&amp; rhs){\r\n        MUL(val, rhs);\r\n        return *this;\r\n    }\r\n};\r\n\r\nconst int N = 50;\r\n\r\nint D&#x5B;N]&#x5B;N], G&#x5B;N]&#x5B;N];\r\n\r\nclass TreesCount {\r\npublic:\r\n\tint count(vector &lt;string&gt; graph) {\r\n\r\n\t    int n = SZ(graph); REP_2(i, j, n, n) G&#x5B;i]&#x5B;j] = i != j &amp;&amp; graph&#x5B;i]&#x5B;j] == '0' ? INF : graph&#x5B;i]&#x5B;j] - '0';\r\n\t    CPY(D, G); REP_3(k, i, j, n, n, n) checkMin(D&#x5B;i]&#x5B;j], D&#x5B;i]&#x5B;k] + D&#x5B;k]&#x5B;j]);\r\n\r\n\t\tInt res = 1; FOR(i, 1, n){\r\n\t\t    Int t; REP(j, n) if (i != j) t += D&#x5B;0]&#x5B;j] + G&#x5B;j]&#x5B;i] == D&#x5B;0]&#x5B;i];\r\n\t\t    res *= t;\r\n\t\t}\r\n\r\n\t\treturn res;\r\n\t}\r\n};\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[17],"tags":[],"class_list":["post-697","post","type-post","status-publish","format-standard","hentry","category-topcoder"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-bf","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/697","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/comments?post=697"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/697\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}