1题解:https://www.luogu.com.cn/article/9jg9d7u0
该用户代码:https://www.luogu.com.cn/record/170036894
2题解:https://www.luogu.com.cn/article/1xtgen98
该用户代码:https://www.luogu.com.cn/record/170081999
3题解:https://www.luogu.com.cn/article/bgami1gy
该用户代码: https://www.luogu.com.cn/record/172073556
证据3中他除了改了变量和输入输出方式以外,码风没有变化