Problem	exam
User	sy123
Submission Time	2023-11-11 20:54:29
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

exam.cpp: In function ‘int main()’:
exam.cpp:11:3: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
11 | cin>>A;
| ^~~
| std::cin
In file included from exam.cpp:1:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
60 | extern istream cin; /// Linked to standard input
| ^~~