{"id":295,"date":"2012-12-08T22:36:00","date_gmt":"2012-12-08T14:36:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/200"},"modified":"2012-12-08T22:36:00","modified_gmt":"2012-12-08T14:36:00","slug":"cf_253b_queue_maintains_two_pointer_backward","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=295","title":{"rendered":"CF 253B(\u961f\u5217\u4e0a\u7ef4\u62a42\u4e2a\u6307\u9488\u540e\u79fb)"},"content":{"rendered":"
\n
\n
\n
\n
\n
B. \u5b9e\u9a8c\u8bef\u5dee<\/div>\n
\n
\ntime limit per test<\/div>\n

1 second<\/p><\/div>\n

\n
\nmemory limit per test<\/div>\n

256 megabytes<\/p><\/div>\n

\n
\ninput<\/div>\n

input.txt<\/p><\/div>\n

\n
\noutput<\/div>\n

output.txt<\/p><\/div>\n<\/div>\n

\n

\n\u5c0f\u660e\u505a\u5b9e\u9a8c\uff0c\u6d4b\u4e86n\u6b21\u7ed3\u679c\uff0c\u56e0\u4e3a\u8bef\u5dee\uff0c\u8fd9\u4e9b\u7ed3\u679c\u4e0d\u4e00\u6837\u3002<\/p>\n

\n\u81f3\u5c11\u4fee\u6539\u591a\u5c11\u7ed3\u679c\uff0c\u624d\u80fd\u4f7f\u6700\u5927\u7684\u7ed3\u679c\u4e0d\u8d85\u8fc7\u6700\u5c0f\u7684\u7ed3\u679c\u76842\u500d\uff1f<\/p>\n<\/div>\n

\n
\nInput<\/div>\n

\n\u7b2c\u4e00\u884c\u4e00\u4e2a\u6574\u6570 n<\/em><\/span> (2\u2009\u2264\u2009n<\/em>\u2009\u2264\u2009105<\/sup><\/span>)\uff0c\u7b2c\u4e8c\u884c\u6709n\u4e2a\u6570c<\/span>1<\/sub>,\u2009<\/span>c<\/span>2<\/sub>,\u2009...,\u2009<\/span>c<\/span>n<\/em><\/sub>\u8868\u793a\u7ed3\u679c(<\/span>1\u2009\u2264\u2009c<\/em>i<\/em><\/sub>\u2009\u2264\u20095000<\/span>)<\/span><\/p>\n<\/div>\n

\n
\nOutput<\/div>\n

\n\u8f93\u51fa\u4e00\u4e2a\u6574\u6570\uff0c\u8868\u793a\u6700\u5c0f\u4fee\u6539\u6b21\u6570\u3002<\/p>\n<\/div>\n

\n
\nSample test(s)<\/div>\n
\n
\n
\ninput<\/div>\n
6\n4 5 3 8 3 7\n<\/pre>\n<\/div>\n
\n
\noutput<\/div>\n
2\n<\/pre>\n<\/div>\n
\n
\ninput<\/div>\n
4\n4 3 2 4\n<\/pre>\n<\/div>\n
\n
\noutput<\/div>\n
0\n<\/pre>\n<\/div>\n<\/div>\n<\/div>\n
\n
\nNote<\/div>\n
\n\u7b2c1\u4e2a\u6570\u636e\u5220\u96648\uff0c7\uff0c\u7b2c\u4e8c\u4e2a\u6570\u636e\u672c\u8eab\u5c31\u6ee1\u8db3\u6761\u4ef6\u3002<\/p>\n
\n\n<\/p>\n
\n\u6392\u5e8f\uff0c\u4ece\u5c0f\u5230\u5927\u679a\u4e3e\u6700\u5c0f\u6570\uff0c\u5e76\u628a\u540e\u6307\u9488\u632a\u5411\u6700\u5927\u7684\u4e0d\u7528\u4fee\u6539\u7684\u6570\u8fdb\u884c\u7edf\u8ba1\u5373\u53ef\u3002<\/span><\/p>\n
\n
\n<\/span><\/p>\n
\n<\/span><\/p>\n
#include<cstdio>\n#include<functional>\n#include<algorithm>\n#include<cstdlib>\n#include<cstring>\n#include<iostream>\nusing namespace std;\n#define MAXN (100000+100)\nint a[MAXN];\nint n;\nint main()\n{\n\tfreopen("input.txt","r",stdin);\n\tfreopen("output.txt","w",stdout);\n\n\tscanf("%d",&n);\n\tfor (int i=1;i<=n;i++) scanf("%d",&a[i]);\n\tsort(a+1,a+n+1);\n\ta[n+1]=1000000;\n\/\/\tfor (int i=1;i<=n;i++) cout<<a[i]<<' ';cout<<endl;\n\tint t=1,ans=0;\n\tfor (int h=1;h<=n;h++)\n\t{\n\t\twhile (a[h]*2>=a[t+1]) t++;\n\t\tans=max(ans,t-h+1);\n\t}\n\tcout<<n-ans<<endl;\n\n}\n<\/pre>\n<\/p>\n
\n
\n<\/span><\/p>\n
\n
\n<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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