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# 220219 Class Notes - Jack
###### tags: `Jack` `Tutor` `Programming` `Mathematics`

## Class Notes

### 師大資科特招

### Zero Judge

- [x] [a006: 一元二次方程式](https://zerojudge.tw/ShowProblem?problemid=a006)
- [ ] [b515: 摩斯電碼-商競103](https://zerojudge.tw/ShowProblem?problemid=b515)

#### Python: format
- [How to use format](https://www.w3schools.com/python/ref_string_format.asp)
- [How to find element's position in a list](https://www.kite.com/python/answers/how-to-find-the-position-of-an-element-in-an-array-in-python)
#### b515: 摩斯電碼-商競103

- [Question text](https://zerojudge.tw/ShowProblem?problemid=b515)

- 列對照表
- 對照

## OMAK

### Kuang

#### My improvements

#### Others good deeds

#### Others good qualities

### Jack

#### My improvements
#### Others good deeds
#### Others good qualities

## Homework

### 師大附中特招


382 + 213 = 810 => 382 + 313 =710

# 2 + 3 = 0 
1. 5 + 5 = 0 (有一個進位, 5) ; 1->0(1)
2. 0 + 0 = 0 (不進位, 5) ; 1->0->9(2)


# 380 + 320 = 700 (9 STEPS)
1. 2 -> 3 (213 -> 313)
2. 8 -> 7 (810 -> 710)
3. 1 -> 0 (710 -> 700)
4. 2 -> 1 -> 0 (382 -> 380)
5. 3 -> 2 -> 1 -> 0 (313 -> 310)
6. 1 -> 2 (310 -> 320)

# 385 + 315 = 700 (8 STEPS)
1. 2 -> 3 (213 -> 313)
2. 8 -> 7 (810 -> 710)
3. 1 -> 0 (710 -> 700)
4. 2 -> 3 -> 4 -> 5 (382 -> 385)
5. 3 -> 4 -> 5  (313 -> 315)

# 580 + 230 = 810

### Zero Judge

- [b515: 摩斯電碼-商競103](https://zerojudge.tw/ShowProblem?problemid=b515)