Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (int)(n); i++)
using namespace std;
using ll = long long;
using vint = vector<int>;
using vvint = vector<vector<int>>;
const ll inf = 1e18;

int main() {
    int n, k;
    cin >> n >> k;
    vint x(n);
    rep(i,n) cin >> x[i];
    vint tmp;
    int border = lower_bound(x.begin(),x.end(),0) - x.begin();
    for (int i = -k; i <= k-1; i++) {
        if (border+i >= 0 && border+i < n) tmp.push_back(x[border+i]);
    }
    ll ans = inf;
    for (int i = 0; i <= tmp.size()-k; i++) {
        if (tmp[i+k-1] < 0) ans = min(-tmp[i],ans);
        if (tmp[i] >= 0) ans = min(tmp[i+k-1],ans);
        else ans = min(tmp[i+k-1]-tmp[i]+min(tmp[i+k-1],-tmp[i]),ans);
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:38: error: no matching function for call to 'min(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type, ll&)'
   21 |         if (tmp[i+k-1] < 0) ans = min(-tmp[i],ans);
      |                                   ~~~^~~~~~~~~~~~~
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:21:38: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   21 |         if (tmp[i+k-1] < 0) ans = min(-tmp[i],ans);
      |                                   ~~~^~~~~~~~~~~~~
/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:21:38: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   21 |         if (tmp[i+k-1] < 0) ans = min(-tmp[i],ans);
      |                                   ~~~^~~~~~~~~~~~~
a.cc:22:35: error: no matching function for call to 'min(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type&, ll&)'
   22 |         if (tmp[i] >= 0) ans = min(tmp[i+k-1],ans);
      |                                ~~~^~~~~~~~~~~~~~~~
/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:22:35: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   22 |         if (tmp[i] >= 0) ans = min(tmp[i+k-1],ans);
      |                                ~~~^~~~~~~~~~~~~~~~
/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:22:35: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   22 |         if (tmp[i] >= 0) ans = min(tmp[i+k-1],ans);
      |                                ~~~^~~~~~~~~~~~~~~~
a.cc:23:23: error: no matching function for call to 'min(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type, ll&)'
   23 |         else ans = min(tmp[i+k-1]-tmp[i]+min(tmp[i+k-1],-tmp[i]),ans);
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:23:23: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   23 |         else ans = min(tmp[i+k-1]-tmp[i]+min(tmp[i+k-1],-tmp[i]),ans);
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:23:23: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   23 |         else ans = min(tmp[i+k-1]-tmp[i]+min(tmp[i+k-1],-tmp[i]),ans);
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~