{"id":38,"date":"2022-11-27T14:17:22","date_gmt":"2022-11-27T06:17:22","guid":{"rendered":"https:\/\/www.vcoco.top\/?p=38"},"modified":"2026-03-14T20:53:31","modified_gmt":"2026-03-14T12:53:31","slug":"%e7%ac%ac%e5%8d%81%e5%b1%8a%e8%93%9d%e6%a1%a5%e6%9d%af%e7%9c%81%e8%b5%9b%e7%bc%96%e7%a8%8b%e9%a2%98%e9%a2%98%e8%a7%a3%ef%bc%88ca%e7%bb%84%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.vcoco.top\/index.php\/2022\/11\/27\/%e7%ac%ac%e5%8d%81%e5%b1%8a%e8%93%9d%e6%a1%a5%e6%9d%af%e7%9c%81%e8%b5%9b%e7%bc%96%e7%a8%8b%e9%a2%98%e9%a2%98%e8%a7%a3%ef%bc%88ca%e7%bb%84%ef%bc%89\/","title":{"rendered":"\u7b2c\u5341\u5c4a\u84dd\u6865\u676f\u7701\u8d5b\u7f16\u7a0b\u9898\u9898\u89e3\uff08C++A\u7ec4\uff09"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">\u5b8c\u5168\u4e8c\u53c9\u6811\u7684\u6743\u503c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57fa\u672c\u601d\u60f3\uff1a\u5b8c\u5168\u4e8c\u53c9\u6811\u7684\u5c42\u5e8f\u904d\u5386<\/li>\n\n\n\n<li>\u7531\u4e8e\u662f\u5b8c\u5168\u4e8c\u53c9\u6811\uff0c\u6bcf\u5c42\u7ed3\u70b9\u90fd\u662f\u6309\u987a\u5e8f\u7684\uff0c\u8be5\u5c42\u7684\u7ed3\u70b9\u6570\uff1a<br>$0&lt;=x&lt;=2^{n-1}$,\uff08n\u4e3a\u5c42\u6570\uff09<br>\u5982\u679c\u8be5\u5c42\u7ed3\u70b9\u6570 $x&lt;2^{n-1}$\uff0c\u5219\u4e3a\u6700\u540e\u4e00\u5c42<br>\u8bbe\u6bcf\u4e00\u5c42\u6709 <code>num<\/code> \u4e2a\u7ed3\u70b9\uff0c<code>k<\/code> \u4e3a\u5f53\u524d\u5c42\u7ea7<\/li>\n\n\n\n<li>\u626b\u63cf\u4e00\u904d\u5e8f\u5217\u5373\u53ef\uff0c\u7531\u4e8e\u7ed3\u70b9\u7edd\u5bf9\u503c\u6700\u5927\u4e3a $10^5$\uff0c\u6700\u591a\u6709 $10^5$\u4e2a\u70b9\uff0c\u6700\u540e\u4e00\u5c42\u548c\u53ef\u80fd\u7206 <code>int<\/code>\uff0c\u6240\u4ee5\u8fd9\u91cc\u7528 <code>long long<\/code>.<\/li>\n\n\n\n<li>\u4ee3\u7801\u5982\u4e0b<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\n\nusing namespace std;\n\nconst int N=100010;\n\nint a&#91;N];\nint n;\n\nint main()\n{\n    cin&gt;&gt;n;\n    for(int i=0;i&lt;n;i++) scanf(\"%d\",&amp;a&#91;i]);\n\n    int d=0;\n    long long res=-0x3f3f3f3f;\n    for(int i=0,k=1,num=1;i&lt;n;i+=num,k++,num*=2)\n    {\n        long long sum=0;\n        for(int j=i;j&lt;i+num&amp;&amp;j&lt;n;j++) sum+=a&#91;j];\/\/\u5c42\u5e8f\u904d\u5386\n        if(sum&gt;res) res=sum,d=k;\n    }\n\n    cout&lt;&lt;d&lt;&lt;endl;\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5916\u5356\u5e97\u4f18\u5148\u7ea7<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u540c\u7406\uff0c\u76f4\u63a5\u66b4\u529b\u4f1aTLE<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b97\u6cd5\u6b65\u9aa4\uff1a<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6839\u636e\u8ba2\u5355\u65f6\u95f4\u5bf9\u6240\u6709\u8ba2\u5355\u6392\u5e8f\uff0c\u4e3a\u4ec0\u4e48\u8981\u6392\u5e8f\u5462\uff0c\u56e0\u4e3a\u6392\u5e8f\u540e\u5904\u7406\u6bcf\u4e00\u4e2a\u5916\u5356\u5e97\u90fd\u662f\u5f80\u540e\u7684\u65f6\u95f4\uff0c\u53ef\u4ee5\u8f7b\u6613\u5f97\u5230\u4e0a\u4e00\u6b21\u5916\u5356\u5e97\u7684\u8ba2\u5355\u65f6\u95f4<\/li>\n\n\n\n<li>\u6839\u636e\u4e0a\u4e00\u6b21\u7684\u8ba2\u5355\u65f6\u95f4\u8ba1\u7b97\u4f18\u5148\u7ea7\uff0c\u7528\u6570\u7ec4 <code>a<\/code> \u8868\u793a\u5f53\u524d\u4f18\u5148\u7ea7\u6570\u91cf\uff0c\u6570\u7ec4 <code>b<\/code> \u8868\u793a\u4e0a\u4e00\u6b21\u7684\u8ba2\u5355\u65f6\u95f4\uff0c<code>st<\/code> \u6807\u8bb0\u8be5\u5916\u5356\u70b9\u662f\u5426\u5728\u7f13\u5b58\u4e2d<\/li>\n\n\n\n<li>\u904d\u5386\u6240\u6709\u8ba2\u5355\uff0c\u518d\u5904\u7406\u6700\u540e\u4e00\u6b21\u65f6\u95f4<code>T<\/code>\u4ea7\u751f\u7684\u4f18\u5148\u7ea7\u51cf\u5c11<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4ee3\u7801\u5982\u4e0b<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\n#include &lt;algorithm&gt;\n\nusing namespace std;\n\ntypedef pair&lt;int,int&gt;PII;\n#define t first\n#define id second\n\nconst int N=100010;\n\nint a&#91;N],b&#91;N];\nint n,m,T;\nPII s&#91;N];\nbool st&#91;N];\n\nint main()\n{\n    cin&gt;&gt;n&gt;&gt;m&gt;&gt;T;\n    for(int i=0;i&lt;m;i++)\n    {\n        int a,b;\n        scanf(\"%d%d\",&amp;a,&amp;b);\n        s&#91;i]={a,b};\n    }\n    sort(s,s+m);\n\n    for(int i=0;i&lt;m;i++)\n    {\n        int k=s&#91;i].id;\n\n        if(b&#91;k]!=s&#91;i].t)\/\/\u4e0d\u662f\u540c\u4e00\u65f6\u95f4\u7684\u8ba2\u5355\n        {\n            a&#91;k]=max(0,a&#91;k]-(s&#91;i].t-b&#91;k]-1));\n            if(a&#91;k]&lt;=3) st&#91;k]=false;\n            \/\/\u8fd9\u91cc\u8981\u6ce8\u610f\u5224\u65ad\u4e00\u5b9a\u8981\u52a0\u5728\u4e0b\u4e00\u4e2a\u8bed\u53e5\u524d\u9762\uff0c\u4e0d\u8981\u5728\u540e\u9762\n        }\n\n        a&#91;k]+=2;\n        if(a&#91;k]&gt;5) st&#91;k]=true;\n\n        b&#91;k]=s&#91;i].t;\n    }\n\n    for(int i=1;i&lt;=n;i++)\n    {\n        a&#91;i]-=T-b&#91;i];\n        if(a&#91;i]&lt;=3) st&#91;i]=false;\n    }\n\n    int res=0;\n    for(int i=1;i&lt;=n;i++) res+=st&#91;i];\n\n    cout&lt;&lt;res&lt;&lt;endl;\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fee\u6539\u6570\u7ec4<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u9898\u5bb9\u6613\u60f3\u5230\u7684\u662f\u76f4\u63a5\u6a21\u62df\u4e00\u904d\uff0c\u7528\u4e00\u4e2a<code>st<\/code>\u6570\u7ec4\u6807\u8bb0\u662f\u5426\u7528\u8fc7\u8be5\u6570\uff0c\u4f9d\u6b21\u626b\u63cf\u8f93\u5165\u7684\u6570\u5f80\u4e0b\u9012\u63a8\uff0c\u4f46\u662f\u8fd9\u6837\u662f\u59a5\u59a5\u5730 TLE.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u56e0\u6b64\u6211\u4eec\u8003\u8651\u7528\u53e6\u4e00\u79cd\u65b9\u6cd5\u2014\u5e76\u67e5\u96c6<\/h4>\n\n\n\n<h5 class=\"wp-block-heading\">\u7b97\u6cd5\u6b65\u9aa4\uff1a<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57fa\u672c\u601d\u8def\uff1a\u7528 <code>p[x]<\/code> \u50a8\u5b58\u8fd9\u4e2a<code>x<\/code>\u7684\u4e0b\u4e00\u4e2a\u53ef\u7528\u7684\u6570<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5bf9\u5e76\u67e5\u96c6\u521d\u59cb\u5316\uff0c<code>p[i]=i;<\/code><\/li>\n\n\n\n<li>\u5bf9\u8f93\u5165\u7684\u6570\u8fdb\u884c\u5224\u65ad\uff0c\u901a\u8fc7 <code>find(x)<\/code> \u627e\u5230\u8be5\u6570\u7684\u4e0b\u4e00\u4e2a\u53ef\u7528\u7684\u6570\uff0c\u6700\u540e\u8fd9\u4e2a\u6570\u7684 <code>p[x]=x+1<\/code>\uff0c\u8868\u793ax\u5df2\u7ecf\u7528\u8fc7\u4e86\uff0c\u4e0b\u4e00\u4e2a\u53ea\u80fd\u7528 <code>x+1<\/code>.<\/li>\n\n\n\n<li>\u6bcf\u8f6e\u64cd\u4f5c\u90fd\u8f93\u51fa\u6570\u5373\u53ef\uff0c\u4e5f\u53ef\u4ee5\u7528\u79bb\u7ebf\u505a\u6cd5<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\n\nusing namespace std;\n\nconst int N=100010,M=1100010;\n\nint n;\nint p&#91;M];\n\nint find(int x)\n{\n    if(x==p&#91;x]) return x;\n    return p&#91;x]=find(p&#91;x]);\/\/\u5e76\u67e5\u96c6\u80fd\u884c\u4f18\u5316\u5f97\u76ca\u4e8e\u8fd9\u91cc\n}\n\nint main()\n{\n    cin&gt;&gt;n;\n    for(int i=1;i&lt;=M;i++) p&#91;i]=i;\/\/init();\n    for(int i=0;i&lt;n;i++)\n    {\n        int x; scanf(\"%d\",&amp;x);\n        x=find(x);\n        printf(\"%d \",x);\n        p&#91;x]=x+1;\n    }\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7cd6\u679c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7cd6\u679c\u79cd\u6570\u5c11\uff0c\u6bcf\u79cd\u7cd6\u679c\u53ea\u6709\u9009\u4e86\u548c\u672a\u9009\u4e24\u79cd\u72b6\u6001\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u72b6\u538bdp\uff0c\u7ecf\u8fc7\u9a8c\u8bc1\uff0c\u53ef\u884c\uff01<\/li>\n\n\n\n<li>\u59821000011\u8868\u793a\u8fd9\u79cd\u72b6\u6001\u5df2\u7ecf\u6709\u4e86\u7b2c1,2,7\u8fd9\u4e09\u79cd\u7cd6\u679c\uff0c\u7528<code>a<\/code>\u6570\u7ec4\u4fdd\u5b58<br>\u65e2\u7136\u662fdp\u9898\uff0c\u6211\u4eec\u5c31\u76f4\u63a5\u4e0a\u5904\u7406\u65b9\u6cd5<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">\u72b6\u6001\u8868\u793a\uff1a$f[i]$ \u8868\u793a\u72b6\u6001 <code>i<\/code> \u4e0b\u7684\u6700\u5c11\u65b9\u6848\u6570<\/h5>\n\n\n\n<h5 class=\"wp-block-heading\">\u72b6\u6001\u8f6c\u79fb\u65b9\u7a0b\uff1a$$f[t]=min(f[t],f[j]+1)$$<\/h5>\n\n\n\n<h5 class=\"wp-block-heading\">\u7ed3\u679c\u8868\u793a\uff1a$f[(1&lt;&lt;m)-1]$<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4ee3\u7801\u5982\u4e0b\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;iostream&gt;\n#include &lt;cstring&gt;\n\nusing namespace std;\n\nconst int M=1&lt;&lt;20;\n\nint a&#91;M],f&#91;M];\nint n,m,k;\n\nint main()\n{\n    cin&gt;&gt;n&gt;&gt;m&gt;&gt;k;\n    for(int i=1;i&lt;=n;i++)\n    {\n        for(int j=0;j&lt;k;j++)\/\/\u72b6\u6001\u96c6\u5408\u5230a&#91;i];\n        {\n            int x; scanf(\"%d\",&amp;x);\n            a&#91;i]|=1&lt;&lt;x-1;\/\/\u8be5\u5305\u7cd6\u679c\u7684\u79cd\u7c7b\u6570\u7d2f\u8ba1\n        }\n    }\n\n    memset(f,0x3f,sizeof f);\n    f&#91;0]=0;\n    for(int i=1;i&lt;=n;i++)\n    {\n        for(int j=0;j&lt;1&lt;&lt;m;j++)\n        {\n            int t=j|a&#91;i];\n            f&#91;t]=min(f&#91;t],f&#91;j]+1);\n        }\n    }\n\n    if(f&#91;(1&lt;&lt;m)-1]==0x3f3f3f3f) cout&lt;&lt;-1&lt;&lt;endl;\n    else cout&lt;&lt;f&#91;(1&lt;&lt;m)-1]&lt;&lt;endl;\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ec4\u5408\u6570\u95ee\u9898\u3010\u5f85\u8865\u3011<\/h3>\n\n\n\n<p>\u672a\u5b8c\u5f85\u7eed\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b8c\u5168\u4e8c\u53c9\u6811\u7684\u6743\u503c \u5916\u5356\u5e97\u4f18\u5148\u7ea7 \u7b97\u6cd5\u6b65\u9aa4\uff1a \u4fee\u6539\u6570\u7ec4 \u56e0\u6b64\u6211\u4eec\u8003\u8651\u7528\u53e6\u4e00\u79cd\u65b9\u6cd5\u2014\u5e76\u67e5\u96c6 \u7b97\u6cd5\u6b65\u9aa4\uff1a \u7cd6\u679c \u72b6\u6001 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":165,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[44,51,45,49,46,43],"class_list":["post-38","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lanqiao","tag-c","tag-51","tag-45","tag-49","tag-46","tag-43"],"_links":{"self":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/comments?post=38"}],"version-history":[{"count":8,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts\/38\/revisions"}],"predecessor-version":[{"id":704,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts\/38\/revisions\/704"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/media\/165"}],"wp:attachment":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/media?parent=38"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/categories?post=38"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/tags?post=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}