Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<bits/stdc++.h>
#include<cmath>
#include<bitset>
#include<queue>
#define ll long long
#define itn int
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define FFOR(i,a,b) for(int i=(a);i<=(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define RREP(i,n)  FFOR(i,1,n)
#define SORT(V) sort((V).begin(),(V).end())
#define REVERSE(V) reverse((V).begin(),(V).end())
#define INF ((1LL<<62)-(1LL<<31))
#define MOD 1000000007
using namespace std;

int main(){
  int N,K,ans=INF;
  cin>>N>>K;
  ll X[N];
  REP(i,N) cin>>X[i];
  
  for(int i=0; i<=N-K; ++i){
    ans=min(ans,X[i+K]-X[i]-min(abs(X[i+K]),abs(X[i])));
  }
  
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:23: warning: overflow in conversion from 'long long int' to 'int' changes value from '4611686016279904256' to '-2147483648' [-Woverflow]
   17 | #define INF ((1LL<<62)-(1LL<<31))
      |             ~~~~~~~~~~^~~~~~~~~~~
a.cc:22:15: note: in expansion of macro 'INF'
   22 |   int N,K,ans=INF;
      |               ^~~
a.cc:28:12: error: no matching function for call to 'min(int&, long long int)'
   28 |     ans=min(ans,X[i+K]-X[i]-min(abs(X[i+K]),abs(X[i])));
      |         ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 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:28:12: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   28 |     ans=min(ans,X[i+K]-X[i]-min(abs(X[i+K]),abs(X[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,
                 from a.cc:4:
/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:28:12: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   28 |     ans=min(ans,X[i+K]-X[i]-min(abs(X[i+K]),abs(X[i])));
      |         ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~