{"id":104,"date":"2011-08-01T22:59:00","date_gmt":"2011-08-01T14:59:00","guid":{"rendered":"http:\/\/wangkaixuan.tech\/?p=104"},"modified":"2020-06-03T22:59:58","modified_gmt":"2020-06-03T14:59:58","slug":"uvaoj-694-the-collatz-sequence","status":"publish","type":"post","link":"http:\/\/www.wangkaixuan.tech\/?p=104","title":{"rendered":"uvaoj 694 &#8211; The Collatz Sequence"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>\/*\n\u5218\u54e5\u554a\n\u4f60\u53ef\u628a\u6211\u5bb3\u60e8\u4e86\u554a\n\u4f60\u53e3\u53e3\u58f0\u58f0\u63d0\u9192\u8981\u7528long long \u578b\n\u6211\u5c31\u50bb\u50bb\u7684\u7528long long \u554a\n\u6709\u6728\u6709\uff01 \nC\u8bed\u8a00%lld\u8981\u52a0stdlib\n\u8bfb-1\u8fd8\u8001\u51fa\u9519\u554a\n\u6709\u6728\u6709\uff01 \nc\u8bed\u8a00\u8fc7\u4e0d\u4e86\u518d\u7528C++\n\u624d\u53d1\u73b0\u539f\u6765cin\u4e0d\u652f\u6301long long \u578b\u554a\uff01\uff01\uff01\n\u6709\u6728\u6709\uff01 \n\u540e\u6765\u5b9e\u5728\u7ea0\u7ed3\u5c31\u767e\u5ea6\u4e86\u4e00\u4e0b\n\u539f\u6765\u4eba\u5bb6\u7528\u7684\u662fdouble\u554a\n\u6709\u6728\u6709\uff01 \n\u4ec0\u4e48\u6d6e\u70b9\u8bef\u5dee\u554a\n\u90fd\u88ab\u4eba\u5bb6\u5f53\u6210\u4e86\u6d6e\u4e91\u554a\uff0c\u6709\u6728\u6709\uff01\uff01\uff01 \n\u6709\u6728\u6709\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01 \n*\/\n#define LOCAL    \n#include&lt;iostream>\n#include&lt;iomanip>\n#include&lt;cmath>\nusing namespace std;\nint main()\n{\n#ifdef LOCAL\n       freopen(\"input.txt\",\"r\",stdin);\n       freopen(\"output.txt\",\"w\",stdout);\n#endif\n    \n    double n,limit,a;\n    long c=1,term;\n    while(1)\n    {\n         cin>>n>>limit;\n         a=n;\n         if(n==-1&amp;&amp;limit==-1) return 0;\n         term=1;\n         while(n!=1&amp;&amp;n&lt;=limit)\n         {\n                if(fmod(n,2)==0) n=n\/2;\n                else n=3*n+1;\n                if(n>limit)\n                break;\n                term++;                       \n         }\n         cout&lt;&lt;\"Case \"&lt;&lt;setiosflags(ios::fixed) &lt;&lt; setprecision(0)&lt;&lt;    \/\/\u522b\u5fd8\u4e86\u8bbe\u7f6e\u7cbe\u5ea6\uff0c\u4e0d\u7136\u4f1a\u51fa\u9519\u6ef4 \n         c++&lt;&lt;\": A = \"&lt;&lt;setiosflags(ios::fixed) &lt;&lt; setprecision(0)&lt;&lt;\n         a&lt;&lt;\", limit = \"&lt;&lt;setiosflags(ios::fixed) &lt;&lt; setprecision(0)&lt;&lt;\n         limit&lt;&lt;\", number of terms = \"&lt;&lt;setiosflags(ios::fixed) &lt;&lt; setprecision(0)&lt;&lt;\n         term&lt;&lt;endl;\n    }\n    return 0;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-104","post","type-post","status-publish","format-standard","hentry","category-06-01-acm"],"_links":{"self":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts\/104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=104"}],"version-history":[{"count":0,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts\/104\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=104"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}