Problem	1821
User	weiheng
Submission Time	2026-01-16 13:23:09
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

1821.cpp:2:6: error: ‘cout’ in namespace ‘std’ does not name a type
2 | std::cout << "0 0";
| ^~~~
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
| ^~~~