惯性聚合 高效追踪和阅读你感兴趣的博客、新闻、科技资讯
阅读原文 在惯性聚合中打开

推荐订阅源

K
Kaspersky official blog
IT之家
IT之家
小众软件
小众软件
T
Tailwind CSS Blog
博客园 - 聂微东
V
Visual Studio Blog
博客园 - 三生石上(FineUI控件)
Hugging Face - Blog
Hugging Face - Blog
D
Docker
爱范儿
爱范儿
云风的 BLOG
云风的 BLOG
Google DeepMind News
Google DeepMind News
MongoDB | Blog
MongoDB | Blog
N
News and Events Feed by Topic
U
Unit 42
The Register - Security
The Register - Security
宝玉的分享
宝玉的分享
J
Java Code Geeks
H
Heimdal Security Blog
OSCHINA 社区最新新闻
OSCHINA 社区最新新闻
Stack Overflow Blog
Stack Overflow Blog
Hacker News - Newest:
Hacker News - Newest: "LLM"
酷 壳 – CoolShell
酷 壳 – CoolShell
雷峰网
雷峰网
T
The Blog of Author Tim Ferriss
博客园 - Franky
A
About on SuperTechFans
Webroot Blog
Webroot Blog
Exploit-DB.com RSS Feed
Exploit-DB.com RSS Feed
Recent Commits to openclaw:main
Recent Commits to openclaw:main
I
Intezer
Threat Intelligence Blog | Flashpoint
Threat Intelligence Blog | Flashpoint
Project Zero
Project Zero
V
V2EX
博客园 - 司徒正美
cs.AI updates on arXiv.org
cs.AI updates on arXiv.org
The GitHub Blog
The GitHub Blog
cs.CL updates on arXiv.org
cs.CL updates on arXiv.org
A
Arctic Wolf
罗磊的独立博客
Forbes - Security
Forbes - Security
PCI Perspectives
PCI Perspectives
SecWiki News
SecWiki News
大猫的无限游戏
大猫的无限游戏
Simon Willison's Weblog
Simon Willison's Weblog
The Cloudflare Blog
freeCodeCamp Programming Tutorials: Python, JavaScript, Git & More
F
Fortinet All Blogs
博客园 - 【当耐特】
Microsoft Azure Blog
Microsoft Azure Blog

Shiroha白羽的博客

Golang 踩坑 —— interface 为参数的时候传 nil 指针 Codeforces Round 925 (Div. 3) Codeforces Round 924 (Div. 2) Codeforces Round 923 (Div. 3) Codeforces Round 922 (Div. 2) Codeforces Round 921 (Div. 2) Educational Codeforces Round 161 (Rated for Div. 2) Codeforces Round 920 (Div. 3) Codeforces Round 919 (Div. 2) Hello 2024 Good Bye 2023 Codeforces Round 918 (Div. 4) 个人备份的常用 macOS 清理命令 Codeforces Round 917 (Div. 2) Pinely Round 3 (Div. 1 + Div. 2) Educational Codeforces Round 160 (Rated for Div. 2) Codeforces Round 915 (Div. 2) Codeforces Round 914 (Div. 2) Codeforces Round 913 (Div. 3) Educational Codeforces Round 159 (Rated for Div. 2) Codeforces Round 912 (Div. 2) Codeforces Round 911 (Div. 2) CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Educational Codeforces Round 158 (Rated for Div. 2) Codeforces Round 910 (Div. 2) Codeforces Round 909 (Div. 3) Codeforces Round 908 (Div. 2) Educational Codeforces Round 157 (Rated for Div. 2) C++自定义的字面量 Codeforces Round 907 (Div. 2) Codeforces Round 916 (Div. 3) 关于 LRU map 的一些灵感 2023 杭州站 ICPC 现场赛 反复横跳的 Clang-Tidy(cert-dcl21-cpp) Codeforces Round 906 (Div. 2) 一段奇怪的 CPP 代码 Codeforces Round 905 (Div. 3) Codeforces Round 904 (Div. 2) Codeforces Round 903 (Div. 3) Educational Codeforces Round 156 (Rated for Div. 2) Codeforces Round 902 (Div. 2, based on COMPFEST 15 - Final Round) Codeforces Round 901 (Div. 2) Codeforces Round 900 (Div. 3) Codeforces Round 899 (Div. 2) Educational Codeforces Round#155 (Div. 2) Codeforces Round 898 (Div. 4) CodeTON Round 6 (Div. 2) Codeforces Round 897 (Div. 2) Codeforces Round 896 (Div. 2) Codeforces Round 887 (Div. 2) Codeforces Round 895 (Div. 3) 左值-右值-将亡值 blog.mauve.icu Pinely Round 2 (Div. 1 + Div. 2) Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) Codeforces Round 894 (Div. 3) Codeforces Round 888 (Div. 3) Educational Codeforces Round#153 (Div. 2) Codeforces Round 893 (Div. 2) OTPAUTH,两步验证中的通用协议 Codeforces Round 892 (Div. 2) Codeforces Round 891 (Div. 3) Codeforces Round 890 (Div. 2) Educational Codeforces Round#152 (Div. 2) blog.mauve.icu Java Script 的 null 和 undefined 随想 记一次 SQL LEFT JOIN 没有得到预期结果的错误 Codeforces Round#789(Div. 2) GCC/G++ 预编译头性能优化 使用 Junit5 和 Mockito 实现 SpringBoot 的单元测试最优美的解决方案 centOS 防火墙 docker-compse 的问题 C++ 语言实现动态变化的线程池 Codeforces Round#744 (Div. 3) 计算机图形学 Windows 通过网络访问 WSL2 原生 JavaScript 实现图片裁剪 面试复习(计算机图形学) 面试复习(算法) Codeforces Round#706(Div. 2)-Let's Go Hiking 面试复习(Java) 面试复习(Git) 面试复习(Linux) 面试复习(数据库) 面试复习(计算机网络) 面试复习(操作系统) 面试复习(C++) Codeforces Round#699 (Div. 2) 清理 WSL2 的磁盘占用 Codeforces Round#697 (Div. 3) Windows 下的 NTFS 驱动器索引 BUG 计算机网络复习 记一次 Navicat 连接 MySQL 一直报认证错误(Access denied) 计算机网络实验复习 WSL1 使用 Docker 一直无法启动 2020牛客暑期多校训练营(第三场)D-Points Construction Problem——构造 2020牛客暑期多校训练营(第三场)E-Two Matchings——复杂思维与简单dp 2020牛客暑期多校训练营(第二场)I-Interval——最大流转对偶图求最短路 Educational Codeforces Round 80 D. Minimax Problem——二分+二进制处理 Codeforces Round 606 E. Two Fairs——图论 Codeforces Round 612 (Div. 2) C. Garland——DP
2019年-西北大学集训队选拔赛——D温暖的签到题
Shiroha · 2019-07-11 · via Shiroha白羽的博客
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
#include <bits/stdc++.h>

#define NUM
#define ll long long
using namespace std;

int n, m;

struct node {
int l;
int sta;//第一个值
int r;//长度

ll sum(int l, int r) { // 区间求和
if (l < this->l) l = this->l;
if (r > this->r) r = this->r;
return (((l - this->l) + sta + (r - this->l) + sta)) * ((ll) r - l + 1) / 2;
}
};

map<int, node> mp; // 利用map自动排序,形成一个一维的块链,每一个块为一个给定规则的数据组成

ll cal(int l, int r) { // 计算区间和,直接调用块内的自定义函数求和
map<int, node>::iterator itl = mp.upper_bound(l);
itl--;
map<int, node>::iterator itr = mp.upper_bound(r);
ll ans = 0;
while (itl != itr) {
ans += (*itl).second.sum(l, r);
itl++;
}
return ans;
}

void update(int l, int r) { // 更新块,删除被覆盖的块,形成新块
if (r == 1)
return;
map<int, node>::iterator itl = mp.upper_bound(l);
itl--;
map<int, node>::iterator itr = mp.upper_bound(r);
itr--;
node templ = (*itl).second;
node tempr = (*itr).second;
tempr.sta = tempr.sta + (r + 1 - tempr.l);
templ.r = l - 1;
tempr.l = r + 1;
itr++;
while (itl != itr) {
auto tmp = itl++;
mp.erase(tmp);
}
node newnode;
newnode.l = l;
newnode.r = r;
newnode.sta = 1;
mp[l] = newnode;
if (templ.l <= templ.r) {
mp[templ.l] = templ;
}
if (tempr.l <= tempr.r) {
mp[tempr.l] = tempr;
}
}

int main() {
scanf("%d%d", &n, &m);
int opt, l, r;
node tot;
tot.l = 1;
tot.r = n;
tot.sta = 1;
mp[1] = tot;
while (m--) {
scanf("%d%d%d", &opt, &l, &r);
if (opt == 1)
update(l, r);
else
printf("%lld\n", cal(l, r));
}
return 0;
}