Owl Get a Life

Compile Error

prefixsums.cpp: In function ‘int main()’:
prefixsums.cpp:6:2: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
6 | cin >> n >> q;
| ^~~
| std::cin
In file included from prefixsums.cpp:1:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
60 | extern istream cin; /// Linked to standard input
| ^~~
prefixsums.cpp:7:2: error: ‘vector’ was not declared in this scope
7 | vector<int> array;
| ^~~~~~
prefixsums.cpp:7:2: note: suggested alternatives:
In file included from /usr/include/c++/9/vector:67,
from prefixsums.cpp:2:
/usr/include/c++/9/bits/stl_vector.h:386:11: note: ‘std::vector’
386 | class vector : protected _Vector_base<_Tp, _Alloc>
| ^~~~~~
In file included from prefixsums.cpp:2:
/usr/include/c++/9/vector:90:13: note: ‘std::pmr::vector’
90 | using vector