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线段树入门基础题目集题解

HeartFireY 发布时间：2021-10-21 14:36:25 ，浏览量：5

※※※|-·-·-|返回总题目集合|-·-·-|※※※ 1.HDU1166 敌兵布阵单点修+区间查询+IO优化

题目要求单点修改，区间查询。按照线段树板子打下来即可。注意IO优化，关闭缓冲流后不可混用stdio和iostream，否则WA的飞起。。以及注意开四倍空间。

#include 
using namespace std;

const int N = 50000 + 10;
int n, tree[N


    
        



        
        
            
                
                
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	请求信息 : 2025-09-14 23:32:52 HTTP/2.0 GET : /home/article/detail/id/427535.html
运行时间 : 0.0679s ( Load:0.0128s Init:0.0020s Exec:0.0332s Template:0.0199s )
吞吐率 : 14.73req/s
内存开销 : 1,921.07 kb
查询信息 : 16 queries 0 writes 
文件加载 : 36
缓存信息 : 5 gets 0 writes 
配置加载 : 132
会话信息 : SESSION_ID=5e3rahid7j29r0t88jc9hqii1g
    
    
        
    
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Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000654s ]
[ app_begin ] --END-- [ RunTime:0.000733s ]
[ view_parse ] --START--
[ template_filter ] --START--
Run Behavior\ContentReplaceBehavior [ RunTime:0.000086s ]
[ template_filter ] --END-- [ RunTime:0.000154s ]
Run Behavior\ParseTemplateBehavior [ RunTime:0.014986s ]
[ view_parse ] --END-- [ RunTime:0.015062s ]
[ view_filter ] --START--
Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000340s ]
[ view_filter ] --END-- [ RunTime:0.000368s ]
[ app_end ] --START--
    
    
        
    
	[2] session_save_path(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s): (/www/wwwroot/www.chaojiit.com/:/tmp/) /www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php 第 1239 行.
[8192] Array and string offset access syntax with curly braces is deprecated /www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 59 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 40 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 101 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 101 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 102 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 102 行.
[8] Undefined variable: pinglun_list /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 111 行.
    
    
        
    
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SELECT * FROM `menu` WHERE `fid` = 2 AND `status` = 1  [ RunTime:0.0001s ]
SELECT * FROM `menu` WHERE `fid` = 3 AND `status` = 1  [ RunTime:0.0001s ]
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SHOW COLUMNS FROM `bloger` [ RunTime:0.0005s ]
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SELECT COUNT(*) AS tp_count FROM `article` WHERE `bloger_id` = 756 LIMIT 1   [ RunTime:0.0001s ]
SHOW COLUMNS FROM `article_content` [ RunTime:0.0007s ]
SELECT `content` FROM `article_content` WHERE `article_id` = 427535 LIMIT 1   [ RunTime:0.0034s ]
SELECT * FROM `article` WHERE `bloger_id` = 756 ORDER BY view_count desc LIMIT 0,10   [ RunTime:0.0048s ]
    
    
        
    
	    
    
    



0.0679s