Problem	fibo
User	hzy
Submission Time	2026-01-13 20:55:18
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

fibo.cpp: In function ‘int main()’:
fibo.cpp:5:2: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
5 | cin >> n;
| ^~~
| std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from fibo.cpp:1:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
fibo.cpp:6:2: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
6 | cout << solve(n);
| ^~~~
| std::cout
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
from fibo.cpp:1:
/usr/include/c++/9/iostream:61:18: note: ‘std::cout’ declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~
fibo.cpp:6:10: error: ‘solve’ was not declared in this scope
6 | cout <