Problem	1821
User	LiuZq
Submission Time	2023-07-08 18:13:03
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

1821.cpp:2:16: error: expected identifier before ‘;’ token
2 | using namespace;
| ^
1821.cpp: In function ‘int main()’:
1821.cpp:5:2: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
5 | cout << 0 << 0;
| ^~~~
| std::cout
In file included from 1821.cpp:1:
/usr/include/c++/9/iostream:61:18: note: ‘std::cout’ declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~