Problem	1821
User	weiheng
Submission Time	2026-01-16 13:22:39
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

1821.cpp:1:6: error: ‘cout’ in namespace ‘std’ does not name a type
1 | std::cout << "0 0";
| ^~~~
1821.cpp:1:1: note: ‘std::cout’ is defined in header ‘<iostream>’; did you forget to ‘#include <iostream>’?
+++ |+#include <iostream>
1 | std::cout << "0 0";