codeforces round 860 div

Codeforces Round 871 (Div. 4) ABCDEF

> 很久没写题目了,划点水题 ###A. Love Story ``` #include using namespace std; typedef long long LL; typedef pair PII; const LL MAXN = 1e18; const LL N = 1e6, M = ......
Codeforces ABCDEF Round 871 Div

「解题报告」Codeforces Round #884 (Div. 1 + Div. 2) Editorial

比赛地址:[Dashboard - Codeforces Round 884 (Div. 1 + Div. 2) - Codeforces](https://codeforces.com/contest/1844) 个人评价:这场是**构造**专场! ## A. Subtraction Game [ ......
Codeforces Div Editorial 报告 Round

CodeForces Gym 102900B Mine Sweeper II

[CF 传送门](https://codeforces.com/gym/102900/problem/B "CF 传送门") 感觉像脑筋急转弯。 考虑所有数字之和就是相邻的 $(\text{雷}, \text{空地})$ 对数,因此翻转后这个对数不会改变。 然后由于抽屉原理,$b \to a$ 和 ......
CodeForces 102900B Sweeper 102900 Mine

CodeForces 1364D Ehab's Last Corollary

[洛谷传送门](https://www.luogu.com.cn/problem/CF1364D "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1364/D "CF 传送门") 简单题。 特判掉 $m = n - 1$ 的情况 ......
CodeForces Corollary 1364D 1364 Ehab

UESTC 2023 Summer Training #02 Div.2

# Preface 都给我丑完了这怎么办啊, 被血虐了苦路西 这场本来前面感觉都还可以,但是当中期看了眼C的题意后准备开C后就不对劲了起来 最后1h扔掉一直T的C题去做H,结果因为被卡自然溢出的Hash一直挂到比赛结束,直接红温 感觉这场策略问题挺大的,比如没有跟榜去写更加简单的E题(比赛的时候题目 ......
Training Summer UESTC 2023 Div

Codeforces Round #771 (Div. 2) A-E

# A ## 代码 ```c++ #include using namespace std; using ll = long long; int p[507]; bool solve() { int n; cin >> n; for (int i = 1;i > p[i]; int pos1 = 0 ......
Codeforces Round 771 A-E Div

CodeForces 1525F Goblins And Gnomes

[洛谷传送门](https://www.luogu.com.cn/problem/CF1525F "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1525/F "CF 传送门") 套路地,将 DAG 的最小不交路径覆盖转化为点数 ......
CodeForces Goblins Gnomes 1525F 1525

D. Bag of mice -- (概率Dp)codeforces 148

###原题链接:[https://codeforces.com/contest/148/submission/213227373](https://codeforces.com/contest/148/submission/213227373) ###题意:捉老鼠游戏,谁捉到白鼠就是胜利,我们求公主 ......
概率 codeforces mice Bag 148

E. Two Chess Pieces -- (codeforces) 树形DP

###原题链接:[https://codeforces.com/contest/1774/problem/E](https://codeforces.com/contest/1774/problem/E) ###题意:两颗棋子,给出两颗棋子必须要去的顶点,且给出两颗棋子的相隔距离不能大于d,算出两颗 ......
树形 codeforces Pieces Chess Two

SMU Summer 2023 Contest Round 2

# [SMU Summer 2023 Contest Round 2](https://codeforces.com/group/L9GOcnr1dm/contest/450889) ## [A. Treasure Hunt](https://codeforces.com/group/L9GOcnr ......
Contest Summer Round 2023 SMU

Educational Codeforces Round 23

# A. Treasure Hunt ```cpp #include using namespace std; int read() { int x = 0, f = 1, ch = getchar(); while ((ch '9') && ch != '-') ch = getchar(); i ......
Educational Codeforces Round 23

Codeforces Round 883 (Div. 3)

# Codeforces Round 883 (Div. 3) 题目链接:[Codeforces Round 883 (Div. 3)](https://codeforces.com/contest/1846 "Codeforces Round 883 (Div. 3)") ## A. Rudolp ......
Codeforces Round 883 Div

JQuery 控制 Div 显示和隐藏

页面上有两个 Div 用 JQuery 控制 Div 显示和隐藏。实现Div间切换的需求 <div class="IndConK Huans overH" id="divExtTelList"> 11111111111111111111 <div> <div class="IndConB flex" ......
JQuery Div

Educational Codeforces Round 96 (Rated for Div. 2)E

You are given a string s. You have to reverse it — that is, the first letter should become equal to the last letter before the reversal, the second le ......
Educational Codeforces Round Rated Div

div小窗的拖动

最近要做一个置顶聊天框的功能,想着要给他做成可以拖动的 一开始使用的是@mousedown+@mousemove+@mouseup来进行小窗口的拖动,但是出现拖动的时候小窗会闪烁,并且位置距离也不好把控,效果不好。然后借鉴了网上大神的帖子,使用v-drage和directives对div进行拖动 首 ......
小窗 div

SMU Summer 2023 Contest Round 1

# [SMU Summer 2023 Contest Round 1](https://codeforces.com/group/L9GOcnr1dm/contest/450888) ## [A. The Contest](https://codeforces.com/group/L9GOcnr1d ......
Contest Summer Round 2023 SMU

Educational Codeforces Round 29

# Educational Codeforces Round 29 https://codeforces.com/contest/863 复健训练 太久没练直接变身傻逼(难道原来就不是吗,笑) ## A. Quasi-palindrome 直接去除后缀0即可(WA了两发评价为弱智) ```CC #i ......
Educational Codeforces Round 29

牛客周赛 Round 2 A~D

A #include <iostream> #include <cstring> #include <string> #include <algorithm> #include <cmath> #include <set> #include <utility> #include <vector> # ......
Round

CodeForces 1508C Complete the MST

[洛谷传送门](https://www.luogu.com.cn/problem/CF1508C "洛谷传送门") [AtCoder 传送门](https://codeforces.com/problemset/problem/1508/C "AtCoder 传送门") 比较需要观察的题。 设 $v ......
CodeForces Complete 1508C 1508 the

CodeForces 920E Connected Components?

[洛谷传送门](https://www.luogu.com.cn/problem/CF920E "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/920/E "CF 传送门") 考虑直接暴力 dfs。设搜到点 $u$,把 $u$ ......
CodeForces Components Connected 920E 920

Educational Codeforces Round 22

# A. The Contest 想一想就知道,提交的时间无所谓,所以我们选择全部做完后的第一个时间间隔提交即可 ```cpp #include using namespace std; #define int long long int read() { int x = 0, f = 1, ch ......
Educational Codeforces Round 22

CodeForces 1847F The Boss's Identity

[洛谷传送门](https://www.luogu.com.cn/problem/CF1847F "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1847/F "CF 传送门") 我们首先观察 $a$ 的形态。令题面中给出的 $ ......
CodeForces Identity 1847F 1847 Boss

Codeforces Round 882 题解

## [Codeforces Round 882 (Div. 2)](https://codeforces.com/contest/1847 "Codeforces Round 882 (Div. 2)") ## [A. The Man who became a God](https://codef ......
题解 Codeforces Round 882

Codeforces Round #883 (Div. 3) A-G

[比赛链接](https://codeforces.com/contest/1846) # A ## 代码 ```c++ #include using namespace std; using ll = long long; bool solve() { int n; cin >> n; int c ......
Codeforces Round 883 A-G Div

Codeforces Round 771 (Div.2) C

刚开始c题用dp做的,一直没做出来 ## B. Odd Swap Sort [Problem - B - Codeforces](https://codeforces.com/contest/1638/problem/B) ### 题意 给定一个序列$a$,如果$a_i$与$a_{i+1}$的和为奇 ......
Codeforces Round 771 Div

CodeForces 997C Sky Full of Stars

[洛谷传送门](https://www.luogu.com.cn/problem/CF997C "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/997/C "CF 传送门") 考虑容斥,钦定 $i$ 行 $j$ 列放同一种颜色, ......
CodeForces Stars 997C Full 997

Codeforces Global Round 14

这场貌似很典很好啊。 ### A. Phoenix and Gold > 给定一个长度为 $ n $ 的数组 $ w $ 和一个数 $ x $,数组中的数**各不相同**,要求**重新排列**这个数组,使得对于每一个 $ i $ $ (1 \le i \le n) $,都有 $ \sum\limit ......
Codeforces Global Round 14

round 函数

# round 函数 要求**四舍五入**的情况,用round函数就很方便。 ## 一、用法 ### 1.基本用法 对于小数而言,round()函数**仅仅保留到整数位**,仅对小数点后一位进行四舍五入。 比如:round(1.5) = 2.000000,round(1.57) = 2.000000 ......
函数 round

内置函数round

1 ''' 2 内置函数round对参数进行四舍五入/ 3 语法: round(number, ndigits) 4 其中,number是要进行四舍五入的数字,而ndigits是可选参数,表示保留小数的位数,默认为0。 5 number:要进行四舍五入的数字。 6 ndigits:保留小数的位数。如 ......
函数 round

Codeforces Round 862 (div.2) C

vp时c题用自已的方法过了,赛后补下正解 ## C.Place for a Selfie [Problem - C - Codeforces](https://codeforces.com/contest/1805/problem/C) ### 题意 给定一些抛物线和过原点的直线,对于每个抛物线,是 ......
Codeforces Round 862 div