counting atcoder another 259h

【atcoder beginner 308E - MEX】

前缀和 二分查找 打表枚举 代码如下 import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.StreamTokenizer; import ......
beginner atcoder 308E 308 MEX

AtCoder Grand Contest 021 E Ball Eat Chameleons

[洛谷传送门](https://www.luogu.com.cn/problem/AT_agc021_e "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/agc021/tasks/agc021_e "AtCoder 传送门") 容易发现一个变色龙 ......
Chameleons AtCoder Contest Grand Ball

AtCoder Beginner Contest 307(E,F,G)

# AtCoder Beginner Contest 307(E,F,G) ## E(dp) [E](https://atcoder.jp/contests/abc307/tasks/abc307_e) 这个题大意就是我们需要组成一个长度为$n$的数组,满足两个相邻的数字不可以相等,其中,$a_1$ ......
Beginner AtCoder Contest 307

Arrangement排列•Combination组合•Counting计数•Binomial Theorem二项式定理

**符号** **C**-Combination 组合数 [1] **A**-Arrangement(旧教材为 P-Permutation) **N**-Number 元素的总个数(自然数集合). **M**- 参与选择的元素个数(M不大于N, 两者都是自然数集合). **!**- **Factor ......

vue-props-为count组件声明props自定义属性

# 组件的`props` props时组件的`自定义属性`,在`封装通用组件`的时候,合理地使用props可以极大的`提高组件的复用性`! ```JS Count 组件 count的值是:{{init}} +1 ``` ......
props 组件 vue-props 属性 count

AtCoder Beginner Contest 280 ABCDE

# [AtCoder Beginner Contest 280](https://atcoder.jp/contests/abc280) ## **A - Pawn on a Grid** ### Problem Statement 题意:给你$N$行$M$列的网格,问你有多少个# ### Solu ......
Beginner AtCoder Contest ABCDE 280

AtCoder Beginner Contest(abc) 297

*** ## B - [chess960](https://atcoder.jp/contests/abc297/tasks/abc297_b) #### 题目大意 >给定一串字符串, 里面一定包含2个' B ', 2个' R ', 1个' K ', 问该字符串是否满足以下两个条件, 一是两个'B' ......
Beginner AtCoder Contest 297 abc

AtCoder Beginner Contest 296 Ex Unite

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc296_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc296/tasks/abc296_h "AtCoder 传送门") 不错的 dp。 考 ......
Beginner AtCoder Contest Unite 296

AtCoder Beginner Contest 227 H Eat Them All

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc227_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc227/tasks/abc227_h "AtCoder 传送门") 好奇特的题。 考虑 ......
Beginner AtCoder Contest Them 227

AtCoder Beginner Contest 306(ABC 306) E~F补题

# E ### 题目大意 给定数字\$k\$,规定数组 $A$ 的函数 $f(A)$ :$A$ 数组前 $k$ 大数字的和 - 如 $A=[1,~3,~7,~4]$ ,$k=2$ ,则 $f(A)=7+4=11$ 现在给定最大数组长度 $n$ ,有 $q$ 组操作,每次将第 $x$ 个数字修改为 $ ......
306 Beginner AtCoder Contest ABC

Pond fish count - how to get it

- # calculate the fish in pond, we can't use the function of average immediately. Due to the fish is swimming everywhere. > - first, we need to get 50 ......
count Pond fish how get

AtCoder Beginner Contest 228 G Digits on Grid

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc228_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc228/tasks/abc228_g "AtCoder 传送门") ?这啥啊,不会。 ......
Beginner AtCoder Contest Digits Grid

AtCoder Beginner Contest 072

# A - Sandglass2 ```cpp #include using namespace std; #define int long long int32_t main() { int a , b; cin >> a >> b; cout using namespace std; #defi ......
Beginner AtCoder Contest 072

AtCoder Beginner Contest 238 Ex Removing People

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc238_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc238/tasks/abc238_h "AtCoder 传送门") 考虑期望转计数,方 ......
Beginner Removing AtCoder Contest People

AtCoder Beginner Contest 307 Ex Marquee

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc307_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc307/tasks/abc307_h "AtCoder 传送门") 一开始看错题了,看 ......
Beginner AtCoder Contest Marquee 307

AtCoder Beginner Contest(abc) 307

*** ## A - [Weekly Records](https://atcoder.jp/contests/abc307/tasks/abc307_a) #### 题目大意 >小莫每天跑步, 输入n周每天的步数, 输出每周跑的总步数; #### 解题思路 >签到题不多嗦了; #### 神秘代码 ......
Beginner AtCoder Contest 307 abc

read: arg count

在 ubuntu 环境下使用 read 出现,read: arg count 原因: read 没有接收输入的变量 解决方法: 给 read 设置一个 从标准输入读取输入并赋值给变量。 ```bash read num ``` num 是接收变量 输入: 123456 ```bash echo $n ......
count read arg

AtCoder Beginner Contest 307 G Approximate Equalization

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc307_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc307/tasks/abc307_g "AtCoder 传送门") 考虑我们如果确定了 ......

AtCoder Beginner Contest 245 Ex Product Modulo 2

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc245_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc245/tasks/abc245_h "AtCoder 传送门") 很好的题。 下文令 ......
Beginner AtCoder Contest Product Modulo

AtCoder Beginner Contest 307 ABCDE

# [AtCoder Beginner Contest 307](https://atcoder.jp/contests/abc307) ## **A - Weekly Records** ### Problem Statement 题意:告诉你有几个礼拜,问你每个礼拜走的路程和。 ### Solu ......
Beginner AtCoder Contest ABCDE 307

AtCoder Beginner Contest 267 ABCDE

# [AtCoder Beginner Contest 267](https://atcoder.jp/contests/abc267) ## **A - Saturday** ### Problem Statement 题意:问你给定的天到礼拜六还要几天。 思路:直接算。 ```c++ #incl ......
Beginner AtCoder Contest ABCDE 267

AtCoder Beginner Contest 252 Ex K-th beautiful Necklace

[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc252_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc252/tasks/abc252_h "AtCoder 传送门") ~~不知道为什么可 ......
beautiful Beginner Necklace AtCoder Contest

AtCoder Beginner Contest 307

## [A - Weekly Records (abc307 A)](https://atcoder.jp/contests/abc307/tasks/abc307_a) ### 题目大意 给定$n$周每天的散步量,求每周七天的散步量的和。 ### 解题思路 累计求和即可。 神奇的代码 ```cpp ......
Beginner AtCoder Contest 307

AtCoder Beginner Contest 212(E,F)

# AtCoder Beginner Contest 212(E,F) ## E(dp) [E](https://atcoder.jp/contests/abc212/tasks/abc212_e) 题目大意为有$n$个点,我们需要找到$k+1$个点,用数组$A$表示,其中,$A_i$和$A_{i+ ......
Beginner AtCoder Contest 212

AtCoder Beginner Contest(abc) 299

*** ## A - [Treasure Chest](https://atcoder.jp/contests/abc299/tasks/abc299_a) #### 题目大意 >给定一个由' | ' ' * '和' . '组成的字符串, 并且保证一定有1个' * '和2个' | ', 检查' * ......
Beginner AtCoder Contest 299 abc

AtCoder Regular Contest 154 E Reverse and Inversion

[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc154_e "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc154/tasks/arc154_e "AtCoder 传送门") 好题! 考虑如何更 ......
Inversion AtCoder Regular Contest Reverse

AtCoder Regular Contest 154 D A + B > C ?

[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc154_d "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc154/tasks/arc154_d "AtCoder 传送门") **看到这种题,应 ......
AtCoder Regular Contest 154 gt

AtCoder Regular Contest 154 C Roller

[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc154_c "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc154/tasks/arc154_c "AtCoder 传送门") 被这题干爆了![] ......
AtCoder Regular Contest Roller 154

【题解】AtCoder-ABC306G Return to 1

这也太强了! 容易想到的是用若干环拼出这个 $10^{10^{100}}$,也就是这些环的 $\gcd \mid 10$。 之后就不会了。 先正图反图两次 DFS,只留下 $1$ 所在强连通分量里的边,对正图跑 DFS 生成树,定义其深度从 $0$ 开始,然后有一个结论是:对于任何正整数 $a$,图 ......
题解 AtCoder-ABC AtCoder Return ABC

AtCoder Beginner Contest 174

# A - Air Conditioner ```cpp #include using namespace std; int main() { int x; cin >> x; if( x >= 30 ) cout using namespace std; #define int long long ......
Beginner AtCoder Contest 174