Language: C++

#include <bits/stdc++.h>

using namespace std;

#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define itn int

typedef long long ll;
typedef pair<ll,ll> p;


int main()
{
  int n, k;
  cin >> n >> k;
  vector<int> v(n, 0);
  ll res = INT_MAX;
  int index = 0;
  bool flag = true;
  for (int i = 0; i < n; i++)
  {
    cin >> v[i];
    if(v[i] > 0 && flag)
    {
      index = i;
      flag = false;
    }
  }

  for (int i = 0; i <= n-k; i++)
  {
    if(i + k -1 == n || i == index + 1) break;
    if(i + k - 1 < index) res = min(res, abs(v[i]));
    else if(i == index) res = min(res, v[i+k-1]);
    else
    {
      int minv = abs(v[i]);
      int maxv = v[i+k-1];
      res = min(res, min(minv, maxv)*2 + max(minv, maxv));
    }
  }

  cout << res << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:36: error: no matching function for call to 'min(ll&, int)'
   35 |     if(i + k - 1 < index) res = min(res, abs(v[i]));
      |                                 ~~~^~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:35:36: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   35 |     if(i + k - 1 < index) res = min(res, abs(v[i]));
      |                                 ~~~^~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:35:36: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   35 |     if(i + k - 1 < index) res = min(res, abs(v[i]));
      |                                 ~~~^~~~~~~~~~~~~~~~
a.cc:36:34: error: no matching function for call to 'min(ll&, __gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type&)'
   36 |     else if(i == index) res = min(res, v[i+k-1]);
      |                               ~~~^~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:36:34: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'})
   36 |     else if(i == index) res = min(res, v[i+k-1]);
      |                               ~~~^~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:36:34: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   36 |     else if(i == index) res = min(res, v[i+k-1]);
      |                               ~~~^~~~~~~~~~~~~~~
a.cc:41:16: error: no matching function for call to 'min(ll&, int)'
   41 |       res = min(res, min(minv, maxv)*2 + max(minv, maxv));
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:41:16: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   41 |       res = min(res, min(minv, maxv)*2 + max(minv, maxv));
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:41:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   41 |       res = min(res, min(minv, maxv)*2 + max(minv, maxv));
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~