Language: C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    int N, K;
    cin >> N;
    cin >> K;
    priority_queue<pair<double, double>> A(N);
    int i;
    double input;
    for (i = 0; i < N; i++)
    {
        cin >> input;
        A.push(make_pair(input, 1));
    }
    pair<double, double> divided;
    for (i = 0; i < K; i++)
    {
        divided = A.top();
        A.pop();
        A.push(make_pair(divided.first * divided.second / (divided.second + 1), divided.second + 1));
    }
    cout << A.top().first << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:45: error: no matching function for call to 'std::priority_queue<std::pair<double, double> >::priority_queue(int&)'
    9 |     priority_queue<pair<double, double>> A(N);
      |                                             ^
In file included from /usr/include/c++/14/queue:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:157,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_queue.h:691:9: note: candidate: 'template<class _InputIterator, class _Alloc, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(_InputIterator, _InputIterator, const _Compare&, _Sequence&&, const _Alloc&) [with _Alloc = _InputIterator; _Requires = _Alloc; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  691 |         priority_queue(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:691:9: note:   candidate expects 5 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:679:9: note: candidate: 'template<class _InputIterator, class _Alloc, class, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(_InputIterator, _InputIterator, const _Compare&, const _Sequence&, const _Alloc&) [with _Alloc = _InputIterator; <template-parameter-2-3> = _Alloc; _Requires = <template-parameter-1-3>; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  679 |         priority_queue(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:679:9: note:   candidate expects 5 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:671:9: note: candidate: 'template<class _InputIterator, class _Alloc, class, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(_InputIterator, _InputIterator, const _Compare&, const _Alloc&) [with _Alloc = _InputIterator; <template-parameter-2-3> = _Alloc; _Requires = <template-parameter-1-3>; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  671 |         priority_queue(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:671:9: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:663:9: note: candidate: 'template<class _InputIterator, class _Alloc, class, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(_InputIterator, _InputIterator, const _Alloc&) [with _Alloc = _InputIterator; <template-parameter-2-3> = _Alloc; _Requires = <template-parameter-1-3>; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  663 |         priority_queue(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:663:9: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:649:9: note: candidate: 'template<class _InputIterator, class> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(_InputIterator, _InputIterator, const _Compare&, _Sequence&&) [with <template-parameter-2-2> = _InputIterator; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  649 |         priority_queue(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:649:9: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:638:9: note: candidate: 'template<class _InputIterator, class> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(_InputIterator, _InputIterator, const _Compare&, const _Sequence&) [with <template-parameter-2-2> = _InputIterator; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  638 |         priority_queue(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:638:9: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:629:9: note: candidate: 'template<class _InputIterator, class> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(_InputIterator, _InputIterator, const _Compare&) [with <template-parameter-2-2> = _InputIterator; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  629 |         priority_queue(_InputIterator __first, _InputIterator __last,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:629:9: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:594:9: note: candidate: 'template<class _Alloc, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(std::priority_queue<_Tp, _Sequence, _Compare>&&, const _Alloc&) [with _Requires = _Alloc; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  594 |         priority_queue(priority_queue&& __q, const _Alloc& __a)
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:594:9: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:590:9: note: candidate: 'template<class _Alloc, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const std::priority_queue<_Tp, _Sequence, _Compare>&, const _Alloc&) [with _Requires = _Alloc; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  590 |         priority_queue(const priority_queue& __q, const _Alloc& __a)
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:590:9: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:585:9: note: candidate: 'template<class _Alloc, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&, const _Alloc&) [with _Requires = _Alloc; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  585 |         priority_queue(const _Compare& __x, _Sequence&& __c, const _Alloc& __a)
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:585:9: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:579:9: note: candidate: 'template<class _Alloc, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, const _Sequence&, const _Alloc&) [with _Requires = _Alloc; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  579 |         priority_queue(const _Compare& __x, const _Sequence& __c,
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:579:9: note:   candidate expects 3 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:573:9: note: candidate: 'template<class _Alloc, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, const _Alloc&) [with _Requires = _Alloc; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  573 |         priority_queue(const _Compare& __x, const _Alloc& __a)
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:573:9: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:569:9: note: candidate: 'template<class _Alloc, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Alloc&) [with _Requires = _Alloc; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  569 |         priority_queue(const _Alloc& __a)
      |         ^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:569:9: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_queue.h: In substitution of 'template<class _Tp, class _Sequence, class _Compare> template<class _Alloc> using std::priority_queue<_Tp, _Sequence, _Compare>::_Uses = typename std::enable_if<std::uses_allocator<_Sequence, _Alloc>::value>::type [with _Alloc = int; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]':
/usr/include/c++/14/bits/stl_queue.h:567:33:   required from here
  567 |       template<typename _Alloc, typename _Requires = _Uses<_Alloc>>
      |                                 ^~~~~~~~
/usr/include/c++/14/bits/stl_queue.h:513:15: error: no type named 'type' in 'struct std::enable_if<false, void>'
  513 |         using _Uses = typename
      |               ^~~~~
/usr/include/c++/14/bits/stl_queue.h:554:9: note: candidate: 'template<class _Seq, class _Requires> std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue() [with _Requires = _Seq; _Tp = std::pair<double, double>; _Sequence = std::vector<std::pair<double, double>, std::allocator<std::pair<double, double> > >; _Compare = std::less<std::pair<double, double> >]'
  554 |