Problem	area_noi
User	ZhangBowen
Submission Time	2025-04-16 17:13:22
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

area_noi.cpp: In function ‘int main()’:
area_noi.cpp:3:15: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
3 | long long n; cin>>n;
| ^~~
| std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from area_noi.cpp:1:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
area_noi.cpp:6:7: error: ‘i’ was not declared in this scope
6 | for (i=0;i<n;i++){
| ^
area_noi.cpp:10:7: error: ‘i’ was not declared in this scope
10 | for (i=0;i<n;i++){
| ^
area_noi.cpp:16:2: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
16 | cout<<ans;
| ^~~~
| std::cout
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,