Origin for each line in 解法参考/MH-20210116.md from check-in 979c60093b:

ebdeddb639 2023-09-15  顽雨沉风: % MH-20210116
ebdeddb639 2023-09-15  顽雨沉风: 
ebdeddb639 2023-09-15  顽雨沉风: # 原解
ebdeddb639 2023-09-15  顽雨沉风: 
ebdeddb639 2023-09-15  顽雨沉风: ~~~
ebdeddb639 2023-09-15  顽雨沉风: 1 * 5 = 5
ebdeddb639 2023-09-15  顽雨沉风: 
ebdeddb639 2023-09-15  顽雨沉风: 2 * 4 = 8
ebdeddb639 2023-09-15  顽雨沉风: 
ebdeddb639 2023-09-15  顽雨沉风: 3 * 3 = 9
ebdeddb639 2023-09-15  顽雨沉风: ~~~
ebdeddb639 2023-09-15  顽雨沉风: 
c023041629 2023-09-24  顽雨沉风: # 扩展
c023041629 2023-09-24  顽雨沉风: 
979c60093b 2023-09-25  顽雨沉风: ~~~
979c60093b 2023-09-25  顽雨沉风: 6 = 3 + 3 = 3 + 3 + 1 - 1 = 3 + 1 + 3 - 1 = (3 + 1) + (3 - 1)
979c60093b 2023-09-25  顽雨沉风: 
979c60093b 2023-09-25  顽雨沉风: (3 + 1) * (3 - 1) = 3 * 3 + 3 * (-1) + 1 * 3 + 1 * (-1) = 3 * 3 + 1 * (-1) = 3 * 3 - 1 ^ 2 = 3 ^ 2 - 1 ^ 2
979c60093b 2023-09-25  顽雨沉风: 
979c60093b 2023-09-25  顽雨沉风: 3 ^ 2 > 3 ^ 2 - 1 ^ 2
979c60093b 2023-09-25  顽雨沉风: ~~~
ebdeddb639 2023-09-15  顽雨沉风: