{"id":155,"date":"2026-05-16T11:21:46","date_gmt":"2026-05-16T03:21:46","guid":{"rendered":"https:\/\/huxiaole.cloud\/?p=155"},"modified":"2026-05-16T11:21:48","modified_gmt":"2026-05-16T03:21:48","slug":"cf2147c-rabbits","status":"publish","type":"post","link":"https:\/\/huxiaole.cloud\/index.php\/2026\/05\/16\/cf2147c-rabbits\/","title":{"rendered":"CF2147C Rabbits"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">CF2147C Rabbits<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u9898\u76ee\u63cf\u8ff0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u6709 n \u4e2a\u82b1\u76c6\u4f9d\u6b21\u6392\u6210\u4e00\u884c\uff0c\u4ece\u5de6\u5230\u53f3\u7f16\u53f7\u4e3a 1 \u5230 n\u3002\u6709\u4e9b\u82b1\u76c6\u91cc\u79cd\u6709\u82b1\uff0c\u6709\u4e9b\u5219\u662f\u7a7a\u7684\u3002\u4f60\u4f1a\u5f97\u5230\u4e00\u4e2a\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32 s\uff0c\u7528\u4e8e\u63cf\u8ff0\u6bcf\u4e2a\u82b1\u76c6\u662f\u5426\u6709\u82b1\uff08s_i = 1 \u8868\u793a\u6709\u82b1\uff0cs_i = 0 \u8868\u793a\u7a7a\uff09\u3002\u4f60\u8fd8\u6709\u4e00\u4e9b\u5154\u5b50\uff0c\u73b0\u5728\u4f60\u60f3\u4e3a\u5154\u5b50\u548c\u82b1\u4e00\u8d77\u62cd\u4e00\u5f20\u6f02\u4eae\u7684\u7167\u7247\u3002\u4f60\u60f3\u5728\u6bcf\u4e2a\u7a7a\u82b1\u76c6\uff08s_i = 0\uff09\u91cc\u653e\u4e0a\u4e00\u53ea\u5154\u5b50\uff0c\u5bf9\u4e8e\u6bcf\u53ea\u5154\u5b50\uff0c\u4f60\u53ef\u4ee5\u8ba9\u5b83\u671d\u5de6\u6216\u671d\u53f3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u5e78\u7684\u662f\uff0c\u8fd9\u4e9b\u5154\u5b50\u5f88\u6dd8\u6c14\uff0c\u5b83\u4eec\u4f1a\u8bd5\u56fe\u8df3\u5230\u5176\u4ed6\u82b1\u76c6\uff0c\u8fd9\u6837\u4f1a\u6bc1\u4e86\u7167\u7247\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bcf\u53ea\u5154\u5b50\u4f1a\u51c6\u5907\u671d\u5b83\u9762\u5bf9\u7684\u65b9\u5411\u8df3\u5411\u4e0b\u4e00\u4e2a\u82b1\u76c6\uff0c\u4f46\u5f53\u4ee5\u4e0b\u4efb\u4e00\u60c5\u51b5\u53d1\u751f\u65f6\uff0c\u5b83\u4e0d\u4f1a\u8df3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u76ee\u6807\u82b1\u76c6\u91cc\u5df2\u6709\u5154\u5b50\uff1b<\/li>\n\n\n\n<li>\u6709\u53e6\u4e00\u53ea\u5154\u5b50\u6b63\u671d\u76f8\u53cd\u65b9\u5411\u51c6\u5907\u8df3\u5411\u540c\u4e00\u4e2a\u76ee\u6807\u82b1\u76c6\uff1b<\/li>\n\n\n\n<li>\u5154\u5b50\u51c6\u5907\u8df3\u51fa\u8fb9\u754c\uff08\u6bd4\u5982\u4f4d\u4e8e\u7b2c 1 \u4e2a\u82b1\u76c6\u4e14\u671d\u5de6\uff0c\u6216\u8005\u4f4d\u4e8e\u7b2c n \u4e2a\u82b1\u76c6\u4e14\u671d\u53f3\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u7684\u76ee\u6807\u662f\u4e3a\u6bcf\u53ea\u5154\u5b50\u9009\u62e9\u65b9\u5411\uff0c\u4f7f\u5f97\u6ca1\u6709\u4efb\u4f55\u5154\u5b50\u4f1a\u771f\u7684\u8df3\u52a8\uff0c\u597d\u8ba9\u4f60\u6709\u8db3\u591f\u65f6\u95f4\u62cd\u7167\u3002\u4f60\u9700\u8981\u5224\u65ad\u662f\u5426\u5b58\u5728\u4e00\u79cd\u6709\u6548\u65b9\u6848\uff0c\u8ba9\u6240\u6709\u5154\u5b50\u90fd\u4e0d\u4f1a\u8df3\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8f93\u5165\u683c\u5f0f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bcf\u7ec4\u6d4b\u8bd5\u5305\u542b\u591a\u7ec4\u6570\u636e\u3002\u7b2c\u4e00\u884c\u4e3a\u6d4b\u8bd5\u7528\u4f8b\u6570 t\uff0c1 \\leq t \\leq 10^4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bcf\u7ec4\u6d4b\u8bd5\u7b2c\u4e00\u884c\u4e3a\u4e00\u4e2a\u6574\u6570 n\uff0c1 \\leq n \\leq 2 \\times 10^5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e8c\u884c\u4e3a\u4e00\u4e2a\u957f\u5ea6\u4e3a n \u7684\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32 s\uff0c\u63cf\u8ff0\u6bcf\u4e2a\u82b1\u76c6\u662f\u5426\u6709\u82b1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fdd\u8bc1\u6240\u6709\u6d4b\u8bd5\u7528\u4f8b\u4e2d n \u7684\u603b\u548c\u4e0d\u8d85\u8fc7 2 \\times 10^5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8f93\u51fa\u683c\u5f0f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u6bcf\u7ec4\u6d4b\u8bd5\u7528\u4f8b\uff0c\u5982\u679c\u5b58\u5728\u4e00\u79cd\u5b89\u6392\u5154\u5b50\u7684\u65b9\u6848\u4f7f\u5f97\u6ca1\u6709\u5154\u5b50\u4f1a\u8df3\u52a8\uff0c\u8f93\u51fa &#8220;YES&#8221;\uff1b\u5426\u5219\u8f93\u51fa &#8220;NO&#8221;\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u51fa\u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff0c\u4f8b\u5982 &#8220;yEs&#8221;\u3001&#8221;yes&#8221;\u3001&#8221;Yes&#8221; \u548c &#8220;YES&#8221; \u90fd\u4f1a\u88ab\u8bc6\u522b\u4e3a\u80af\u5b9a\u56de\u7b54\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8f93\u5165\u8f93\u51fa\u6837\u4f8b #1<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u5165 #1<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>12\n4\n0100\n3\n000\n8\n11011011\n5\n00100\n1\n1\n5\n01011\n2\n01\n7\n0101011\n7\n1101010\n5\n11001\n4\n1101\n9\n001101100\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa #1<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>YES\nYES\nNO\nYES\nYES\nYES\nYES\nYES\nYES\nYES\nNO\nNO\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u8bf4\u660e\/\u63d0\u793a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/codeforces.com\/assets\/contests\/2147\/C_2iM9A1dE03B4IrDfFG54.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u53ef\u89c6\u5316\u5de5\u5177\u94fe\u63a5<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u7b2c\u4e00\u4e2a\u6d4b\u8bd5\u7528\u4f8b\u4e2d\uff0c\u4e00\u79cd\u53ef\u884c\u7684\u65b9\u6848\u4e3a\uff1a\u7b2c 1 \u4e2a\u82b1\u76c6\u653e\u4e00\u53ea\u671d\u53f3\u7684\u5154\u5b50\uff0c\u7b2c 3 \u4e2a\u82b1\u76c6\u653e\u4e00\u53ea\u671d\u5de6\u7684\u5154\u5b50\uff0c\u7b2c 4 \u4e2a\u82b1\u76c6\u653e\u4e00\u53ea\u671d\u5de6\u7684\u5154\u5b50\u3002\u6ca1\u6709\u5154\u5b50\u4f1a\u8df3\u52a8\uff0c\u56e0\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c 1 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u4e0d\u4f1a\u8df3\u53bb\u7b2c 2 \u4e2a\u82b1\u76c6\uff0c\u56e0\u4e3a\u7b2c 3 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u6b63\u671d\u5de6\uff1b<\/li>\n\n\n\n<li>\u7b2c 3 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u4e0d\u4f1a\u8df3\u5230\u7b2c 2 \u4e2a\u82b1\u76c6\uff0c\u56e0\u4e3a\u7b2c 1 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u6b63\u671d\u53f3\uff1b<\/li>\n\n\n\n<li>\u7b2c 4 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u4e0d\u4f1a\u8df3\u5230\u7b2c 3 \u4e2a\u82b1\u76c6\uff0c\u56e0\u4e3a\u90a3\u91cc\u5df2\u7ecf\u6709\u5154\u5b50\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.luogu.com.cn\/upload\/vjudge_pic\/CF2147C\/7fb4aa1b144e018e63aa535ad0ea1ae5f45eef624f417e06cf577679aec1840b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.luogu.com.cn\/upload\/vjudge_pic\/CF2147C\/7fb4aa1b144e018e63aa535ad0ea1ae5f45eef624f417e06cf577679aec1840b.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u7b2c\u4e8c\u4e2a\u6d4b\u8bd5\u7528\u4f8b\u4e2d\uff0c\u4e00\u79cd\u53ef\u884c\u7684\u65b9\u6848\u4e3a\uff1a\u7b2c 1 \u4e2a\u82b1\u76c6\u653e\u4e00\u53ea\u671d\u5de6\u7684\u5154\u5b50\uff0c\u7b2c 2 \u4e2a\u82b1\u76c6\u653e\u4e00\u53ea\u671d\u53f3\u7684\u5154\u5b50\uff0c\u7b2c 3 \u4e2a\u82b1\u76c6\u653e\u4e00\u53ea\u671d\u5de6\u7684\u5154\u5b50\u3002\u6ca1\u6709\u5154\u5b50\u4f1a\u8df3\u52a8\uff0c\u56e0\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c 1 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u4e0d\u4f1a\u8df3\uff0c\u56e0\u4e3a\u5de6\u8fb9\u662f\u8fb9\u754c\uff1b<\/li>\n\n\n\n<li>\u7b2c 2 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u4e0d\u4f1a\u8df3\u5230\u7b2c 3 \u4e2a\u82b1\u76c6\uff0c\u56e0\u4e3a\u90a3\u91cc\u5df2\u6709\u5154\u5b50\uff1b<\/li>\n\n\n\n<li>\u7b2c 3 \u4e2a\u82b1\u76c6\u7684\u5154\u5b50\u4e0d\u4f1a\u8df3\u5230\u7b2c 2 \u4e2a\u82b1\u76c6\uff0c\u56e0\u4e3a\u90a3\u91cc\u5df2\u6709\u5154\u5b50\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/cdn.luogu.com.cn\/upload\/vjudge_pic\/CF2147C\/fea0108ea6780494af907cb2e89061442d09eab72449a1df7daea0ff950cfeb3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/cdn.luogu.com.cn\/upload\/vjudge_pic\/CF2147C\/fea0108ea6780494af907cb2e89061442d09eab72449a1df7daea0ff950cfeb3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"\/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u8bc1\u660e\uff0c\u7b2c\u4e09\u4e2a\u6d4b\u8bd5\u7528\u4f8b\u4e0d\u5b58\u5728\u4efb\u4f55\u6709\u6548\u65b9\u6848\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u591a\u4e2a0\u76f8\u90bb\u90a3\u4e48\u4e0d\u7528\u7ba1\uff0c\u5de6\u53f3\u5154\u5b50\u5c01\u4f4f\uff0c\u5bf9\u7740\u5bf9\u65b9\u5c31\u53ef\u4ee5\u4e86<br>\u5982\u679c0\u4e4b\u95f4\u4e2d\u95f4\u95f4\u9694\u4e861\uff0c\u90a3\u4e48\u9700\u8981\u4e24\u4e2a\u5154\u5b50\uff1b\u770b\u7740\u540c\u4e00\u4e2a\u82b1\u76c6\uff0c\u4e00\u5de6\u4e00\u53f3\uff0c\u56e0\u4e3a\u8981\u4e00\u5de6\u4e00\u53f3\uff0c\u6240\u4ee5\u6211\u4eec\u770b\u4f5c10\u4e3a\u4e00\u8282\uff0c\u6700\u540e\u904d\u5386\u7ed3\u679c\u662f0 10 10 \uff0c\u5982\u679c\u8fd9\u4e2a\u8282\u70b9\u5206\u4e86\u4e09\u6bb5\uff0c\u90a3\u4e48\u5fc5\u7136\u6709\u4e00\u6bb5\u4f1a\u53ea\u80fd\u81ea\u5df1\u4e00\u4e2a\u5bf9\u7740\u82b1\u76c6<br>\u4f46\u8fd9\u5e76\u4e0d\u610f\u5473\u7740\u4e0d\u53ef\u884c\uff0c\u5982\u679c\u4ed6\u5bf9\u7740\u5154\u5b50\u662f\u4e0d\u80fd\u8df3\u7684\uff0c\u5982\u679c\u4ed6\u5bf9\u7740\u5899\u662f\u4e0d\u80fd\u8df3\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u5224\u65ad\u5de6\u53f3\u4e24\u7aef\uff0c\u91cd\u65b0\u5206\u914d<br>\u5982\u679c\u8fd8\u4e0d\u80fd\u5206\u914d\u5c31\u771f\u4e0d\u884c\u4e86<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ee3\u7801<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>void solve() {\n\n&nbsp; &nbsp; int n;string s;\n\n&nbsp; &nbsp; cin&gt;&gt;n&gt;&gt;s;\n\n  \n  \n\n&nbsp; &nbsp; for(int i=0;i&lt;n;i++){\n\n&nbsp; &nbsp; &nbsp; &nbsp; if(s&#91;i]=='1')continue;\n\n  \n\n&nbsp; &nbsp; &nbsp; &nbsp; int cnt=0;\n\n&nbsp; &nbsp; &nbsp; &nbsp; int j=i;\n\n&nbsp; &nbsp; &nbsp; &nbsp; while(j+2&lt;n&amp;&amp;s&#91;j+1]=='1'&amp;&amp;s&#91;j+2]=='0'){\n\n&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; j+=2;\n\n&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cnt++;\n\n&nbsp; &nbsp; &nbsp; &nbsp; }\n\n  \n\n&nbsp; &nbsp; &nbsp; &nbsp; bool l=(i&gt;0&amp;&amp;s&#91;i-1]=='1');\n\n&nbsp; &nbsp; &nbsp; &nbsp; bool r=(j&lt;n-1&amp;&amp;s&#91;j+1]=='1');\n\n  \n\n&nbsp; &nbsp; &nbsp; &nbsp; if(l&amp;&amp;r&amp;&amp;cnt%2==0){\n\n&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cout&lt;&lt;\"NO\"&lt;&lt;endl;\n\n&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return ;\n\n&nbsp; &nbsp; &nbsp; &nbsp; }\n\n&nbsp; &nbsp; &nbsp; &nbsp; i=j;\n\n&nbsp; &nbsp; }\n\n&nbsp; &nbsp; cout&lt;&lt;\"YES\"&lt;&lt;endl;\n\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>CF2147C Rabbits \u9898\u76ee\u63cf\u8ff0 \u4f60\u6709 n \u4e2a\u82b1\u76c6\u4f9d\u6b21\u6392\u6210\u4e00\u884c\uff0c\u4ece\u5de6\u5230\u53f3\u7f16\u53f7\u4e3a 1 \u5230 n\u3002\u6709\u4e9b\u82b1\u76c6\u91cc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":107,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,10],"tags":[],"class_list":["post-155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-codeforces","category-10"],"_links":{"self":[{"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/posts\/155","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/comments?post=155"}],"version-history":[{"count":1,"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/posts\/155\/revisions"}],"predecessor-version":[{"id":156,"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/posts\/155\/revisions\/156"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/media\/107"}],"wp:attachment":[{"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/media?parent=155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/categories?post=155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huxiaole.cloud\/index.php\/wp-json\/wp\/v2\/tags?post=155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}