{"id":201,"date":"2025-02-10T21:24:59","date_gmt":"2025-02-10T13:24:59","guid":{"rendered":"https:\/\/blog.seekrealthing.net\/blog\/?p=201"},"modified":"2025-02-10T21:25:01","modified_gmt":"2025-02-10T13:25:01","slug":"g-guess-one-character-%e8%a7%a3%e6%9e%90%e6%80%9d%e7%b6%ad","status":"publish","type":"post","link":"https:\/\/blog.seekrealthing.net\/blog\/?p=201","title":{"rendered":"G. Guess One Character \u89e3\u6790(\u601d\u7dad)"},"content":{"rendered":"\n<div class=\"wp-block-jetpack-markdown\"><p>\u4eca\u5929\u6211\u5011\u4f86\u770b\u770bCF2038G\n<a href=\"https:\/\/codeforces.com\/contest\/2038\/problem\/G\">\u984c\u76ee\u9023\u7d50<\/a><\/p>\n<h3>\u984c\u76ee\u63cf\u8ff0<\/h3>\n<p>\u672c\u984c\u662f\u4e00\u9053\u4ea4\u4e92\u984c\u3002\u7cfb\u7d71\u9810\u5148\u56fa\u5b9a\u4e86\u4e00\u500b$01$\u5b57\u4e32$s$\uff0c\u5176\u9577\u5ea6$n$\u6eff\u8db3 $2 \\le n \\le 50$\u3002<br>\n\u4f60\u5fc5\u9808\u5728\u4e0d\u8d85\u904e3\u6b21\u67e5\u8a62\u4e0b\uff0c\u6b63\u78ba\u731c\u51fa$s$\u4e2d\u81f3\u5c11\u4e00\u500b\u4f4d\u7f6e\u7684\u5b57\u7b26\u3002<\/p>\n<hr>\n<h3>\u4e92\u52d5\u65b9\u5f0f<\/h3>\n<ul>\n<li>\n<p><strong>\u67e5\u8a62<\/strong><br>\n\u4f60\u53ef\u4ee5\u767c\u9001\u67e5\u8a62\uff0c\u683c\u5f0f\u70ba$1\\ t$\uff0c\u5176\u4e2d$t$\u70ba\u4e00\u500b\u9577\u5ea6\u4ecb\u65bc1\u548c$n$\uff08\u542b\uff09\u4e4b\u9593\u3001\u50c5\u7531\u5b57\u7b260\u548c1\u7d44\u6210\u7684\u5b57\u7b26\u4e32\u3002\u67e5\u8a62\u7684\u56de\u61c9\u662f$t$\u4f5c\u70ba\u9023\u7e8c\u5b50\u4e32\u5728$s$\u4e2d\u51fa\u73fe\u7684\u6b21\u6578\uff08\u4f8b\u5982\uff0c\u82e5$s=111011$\u4e14$t=11$\uff0c\u5247\u56de\u61c9\u70ba 3\uff09\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u63d0\u4ea4\u7b54\u6848<\/strong><br>\n\u7576\u4f60\u6c7a\u5b9a\u731c\u6e2c\u67d0\u4e00\u5b57\u7b26\u6642\uff0c\u61c9\u4ee5\u683c\u5f0f$0\\ i\\ c$\u63d0\u4ea4\u7b54\u6848\uff0c\u5176\u4e2d$1 \\le i \\le n$\u4e14$c \\in {0,1}$\u8868\u793a\u4f60\u8a8d\u70ba$s_i = c$\u3002\u5982\u679c\u7b54\u6848\u6b63\u78ba\uff0c\u7cfb\u7d71\u5c07\u56de\u61c91\uff0c\u5426\u5247\u56de\u61c9-1\u4e26\u7d42\u6b62\u7a0b\u5e8f\u3002<\/p>\n<\/li>\n<\/ul>\n<hr>\n<h2>\u524d\u8a00<\/h2>\n<p>\u6211\u81ea\u5df1\u60f3\u7684\u6642\u5019\u6211\u771f\u5fc3\u8a8d\u70ba\u5fc5\u9808\u8981\u5148$t=01$\u518d$t=10$\uff0c\u56e0\u70ba\u5982\u679c\u9019\u5169\u500b\u7684\u6578\u91cf\u4e0d\u4e00\u6a23\u6211\u5011\u5c31\u4e00\u5b9a\u77e5\u9053\u7684\u4e00\u500b\u548c\u6700\u5f8c\u4e00\u500b\u5b57\u662f\u4ec0\u9ebc\u3002<br>\n\u7136\u800c\u5728\u9019\u5169\u500b\u7684\u6578\u91cf\u4e00\u6a23\u7684\u6642\u5019\uff0c\u6b7b\u6d3b\u627e\u4e0d\u5230\u65b9\u6cd5\u3002<\/p>\n<h3>\u60f3\u6cd5<\/h3>\n<p>\u6211\u662f\u770b\u89e3\u7b54\u7684\uff0c\u89e3\u7b54\u5f88\u7c21\u55ae\uff0c\u4e09\u500b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>$t=1$<\/li>\n<li>$t=11$<\/li>\n<li>$t=10$<\/li>\n<\/ol>\n<p>\u9019\u500b\u89e3\u6cd5\u7684\u539f\u7406\u662f\u60f3\u8981\u53bb\u770b\u6700\u5f8c\u4e00\u4f4d\u5230\u5e95\u662f$0$\u9084\u662f$1$\u3002<br>\n\u7531\u65bc\u6700\u5f8c\u4e00\u4f4d\u5982\u679c\u662f$1$\u7684\u8a71\uff0c$t=10$\u5c31\u6c92\u8fa6\u6cd5\u7d71\u8a08\u5230\u6700\u5f8c\u4e00\u4f4d\u7684$1$\uff0c\u800c\u5728\u6b64\u4e4b\u524d\u7684\u201c\u7d50\u5c3e$1$\u201d\u90fd\u53ef\u4ee5\u88ab$t=10$\u6355\u6349\u5230\u3002<br>\n\u800c\u5176\u4ed6\u4e0d\u662f\u201c\u7d50\u5c3e$1$\u201d\u7684$1$\u7684\u6578\u91cf\u90fd\u53ef\u4ee5\u88ab$t=11$\u6355\u6349\u5230\u3002<br>\n\u6240\u4ee5\u5982\u679c$t=1$\u7684\u6578\u91cf\u7b49\u65bc$t=11$\u7684\u6578\u91cf\u52a0\u4e0a$t=10$\u7684\u6578\u91cf\uff0c\u5c31\u4ee3\u8868\u7d50\u5c3e\u6c92\u6709$1$\uff0c\u56e0\u6b64\u7d50\u5c3e\u662f$0$\u3002<br>\n\u76f8\u53cd\u7684\u72c0\u6cc1\u5c31\u662f\u7d50\u5c3e\u662f$1$\u3002<\/p>\n<h3>\u7a0b\u5f0f\u78bc:<\/h3>\n<pre><code class=\"language-cpp\">const int _n = 1e5 + 10;\nint t, n, m;\nmain(void) {\n  ios_base::sync_with_stdio(0);\n  cin.tie(0);\n  cout.tie(0);\n  cin &gt;&gt; t;\n  while (t--) {\n    cin &gt;&gt; n;\n    int q1, q11, q10;\n    cout &lt;&lt; &quot;1 1&quot; &lt;&lt; endl;\n    cin &gt;&gt; q1;\n    cout &lt;&lt; &quot;1 11&quot; &lt;&lt; endl;\n    cin &gt;&gt; q11;\n    cout &lt;&lt; &quot;1 10&quot; &lt;&lt; endl;\n    cin &gt;&gt; q10;\n    if (q1 == q11 + q10) {\n      cout &lt;&lt; &quot;0 &quot; &lt;&lt; n &lt;&lt; &quot; 0&quot; &lt;&lt; endl;\n    } else {\n      cout &lt;&lt; &quot;0 &quot; &lt;&lt; n &lt;&lt; &quot; 1&quot; &lt;&lt; endl;\n    }\n    int res;\n    cin &gt;&gt; res;\n    if (res == -1) {\n      return 0;\n    }\n  }\n \n  return 0;\n}\n<\/code><\/pre>\n<p>\u6a19\u982d\u3001\u6a21\u677f\u8acb\u9edeSubmission\u770b\n<a href=\"https:\/\/codeforces.com\/contest\/2038\/submission\/305456298\">Submission<\/a><\/p>\n<\/div>\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_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},"version":2}},"categories":[3],"tags":[10,9,8],"class_list":["post-201","post","type-post","status-publish","format-standard","hentry","category-ojcode","tag-codeforce","tag-ojcode","tag-8"],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>G. 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