shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:6:2: error: 'vector' was not declared in this scope
6 | vector<int> V;
| ^~~~~~
shoes.cpp:6:2: note: suggested alternatives:
In file included from /usr/include/c++/10/vector:67,
from shoes.h:5,
from shoes.cpp:1:
/usr/include/c++/10/bits/stl_vector.h:389:11: note: 'std::vector'
389 | class vector : protected _Vector_base<_Tp, _Alloc>
| ^~~~~~
In file included from shoes.h:5,
from shoes.cpp:1:
/usr/include/c++/10/vector:86:13: note: 'std::pmr::vector'
86 | using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
| ^~~~~~
shoes.cpp:6:9: error: expected primary-expression before 'int'
6 | vector<int> V;
| ^~~
shoes.cpp:10:9: error: 'V' was not declared in this scope
10 | V.push_back(b);
| ^
shoes.cpp:12:5: error: 'V' was not declared in this scope
12 | if(V[0]<0){
| ^
shoes.cpp:13:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
13 | cout<<0;
| ^~~~
| std::cout
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:75,
from shoes.cpp:2:
/usr/include/c++/10/iostream:61:18: note: 'std::cout' declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~
shoes.cpp:15:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
15 | cout<<1;
| ^~~~
| std::cout
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:75,
from shoes.cpp:2:
/usr/include/c++/10/iostream:61:18: note: 'std::cout' declared here
61 | extern ostream cout; /// Linked to standard output
| ^~~~
shoes.cpp:7:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
7 | scanf("%d",&a);
| ~~~~~^~~~~~~~~
shoes.cpp:9:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
9 | scanf("%d",&b);
| ~~~~~^~~~~~~~~