skyscraper.cpp: In function 'void dij()':
skyscraper.cpp:27:13: error: 'b' was not declared in this scope
27 | q.push({b[1], 1});
| ^
skyscraper.cpp:27:21: error: no matching function for call to 'std::priority_queue<std::pair<long long int, long long int> >::push(<brace-enclosed initializer list>)'
27 | q.push({b[1], 1});
| ^
In file included from /usr/include/c++/10/queue:64,
from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:86,
from skyscraper.cpp:1:
/usr/include/c++/10/bits/stl_queue.h:640:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = std::pair<long long int, long long int>; _Sequence = std::vector<std::pair<long long int, long long int> >; _Compare = std::less<std::pair<long long int, long long int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<long long int, long long int>]'
640 | push(const value_type& __x)
| ^~~~
/usr/include/c++/10/bits/stl_queue.h:640:30: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type&' {aka 'const std::pair<long long int, long long int>&'}
640 | push(const value_type& __x)
| ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/10/bits/stl_queue.h:648:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(std::priority_queue<_Tp, _Sequence, _Compare>::value_type&&) [with _Tp = std::pair<long long int, long long int>; _Sequence = std::vector<std::pair<long long int, long long int> >; _Compare = std::less<std::pair<long long int, long long int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<long long int, long long int>]'
648 | push(value_type&& __x)
| ^~~~
/usr/include/c++/10/bits/stl_queue.h:648:25: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::priority_queue<std::pair<long long int, long long int> >::value_type&&' {aka 'std::pair<long long int, long long int>&&'}
648 | push(value_type&& __x)
| ~~~~~~~~~~~~~^~~
skyscraper.cpp: At global scope:
skyscraper.cpp:42:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
42 | main() {
| ^~~~