编程题:An echo bug
The echo bug will repeat all the content it hears. Please write a program to be an echo bug. Whatever you receive, please output it as it is.
### Sample Input:
in
Good
### Sample Output:
out
Good
答案:若无答案欢迎评论
### Sample Input:
in
Good
### Sample Output:
out
Good
答案:若无答案欢迎评论