Problem	ny_mathexam
User	TheInvadr
Submission Time	2025-03-20 16:37:58
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

ny_mathexam.cpp: In function ‘int main()’:
ny_mathexam.cpp:14:5: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
14 | cin>>x;
| ^~~
| std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from ny_mathexam.cpp:9:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
ny_mathexam.cpp:15:5: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
15 | cout<<4*20*x*x<<endl;
| ^~~~
| std::cout
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from ny_mathexam.cpp:9:
/usr/include/c++/9/iostream:61:18: note: ‘std::cout’ declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~
ny_mathexam.cpp:15