Problem	trivialexam
User	Xiaoyang
Submission Time	2023-03-27 15:39:41
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

trivialexam.cpp: In function ‘int main()’:
trivialexam.cpp:19:7: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
19 | ll n;cin>>n;
| ^~~
| std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from trivialexam.cpp:1:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
60 | extern istream cin; /// Linked to standard input
| ^~~