---
disqus: hackmd
---

# 寫教學的標準化流程
常用程式
## markdown語法
用標籤來分類

---
tags: teach
disqus: hackmd  <-不過這個是什麼
---

#include <iostream>
using namespace std;
int main(){
	int n;
	cin >> n;
	while(n--){
		int a,b,c,d;
		cin >> a >> b >> c >> d;
		if(d/c==c/b&&c/b==b/a)
			cout << a << " " << b << " " << c << " " << d << " " << d*d/c;
		else
			cout << a << " " << b << " " << c << " " << d << " " << d+(d-c);
                /* d/c == c/b && c/b == b/a ? cout << a << " " << b << " " << c << " " << d << " " << d*d/c : cout << a << " " << b << " " << c << " " << d << " " << d+(d-c); */
	cout << '\n';
	}
return 0;
}

## latex

[符號們](http://bcc16.ncu.edu.tw/7/latex/math_tex/)
$a_{i}$與$a_{i+1}$

$\in$
## CSS???

color=red
color=orange
color=yellow
color=green
color=blue
color=indigo
color=purple
color=rainbow (為什麼彩虹色是綠的QQ)
color=white
color=gray
color=black

color: #0f0f0;

## html
<pre>
<code>
<span>print('hello world')</span>

</code>
</pre>
<font color="#f00">hello, World</font>
[HEX顏色參考](https://www.ginifab.com.tw/tools/colors/cmyk_to_hex.html)
###### tags: `寫東東先來看`