Language: C++

#include <algorithm>
#include <array>
#include <cmath>
#include <iostream>
#include <vector>
using namespace std;

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);

  int64_t N, K;
  cin >> N >> K;

  vector<int64_t> x(N);
  int64_t sum = 0;

  for (int64_t i = 0; i < N; i++) {
    int64_t tmp = 0;
    if (abs(x.at(i) - K) > x) {
      sum += x;
    } else {
      sum += abs(x.at(i) - K);
    }
  }

  cout << sum * 2;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:26: error: no match for 'operator>' (operand types are 'long int' and 'std::vector<long int>')
   20 |     if (abs(x.at(i) - K) > x) {
      |         ~~~~~~~~~~~~~~~~ ^ ~
      |            |               |
      |            long int        std::vector<long int>
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_pair.h:1058:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1058 |     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1058:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::pair<_T1, _T2>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:462:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  462 |     operator>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:462:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/bits/stl_iterator.h:507:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  507 |     operator>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:507:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1714 |     operator>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1774 |     operator>(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
In file included from a.cc:2:
/usr/include/c++/14/array:349:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> bool std::operator>(const array<_Tp, _Nm>&, const array<_Tp, _Nm>&)'
  349 |     operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two)
      |     ^~~~~~~~
/usr/include/c++/14/array:349:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::array<_Tp, _Nm>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54,
                 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:4:
/usr/include/c++/14/string_view:695:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  695 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:695:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/string_view:702:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  702 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:702:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/string_view:710:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  710 |     operator> (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:710:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   'std::vector<long int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/bits/basic_string.h:3915:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3915 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3915:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/bits/basic_string.h:3929:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3929 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3929:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
/usr/include/c++/14/bits/basic_string.h:3942:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3942 |     operator>(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3942:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const _CharT*' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/tuple:2619:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator>(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2619 |     operator>(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2619:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::tuple<_UTypes ...>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
In file included from /usr/include/c++/14/vector:66,
                 from a.cc:5:
/usr/include/c++/14/bits/stl_vector.h:2102:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator>(const vector<_Tp, _Alloc>&, const vector<_Tp, _Alloc>&)'
 2102 |     operator>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:2102:5: note:   template argument deduction/substitution failed:
a.cc:20:28: note:   mismatched types 'const std::vector<_Tp, _Alloc>' and 'long int'
   20 |     if (abs(x.at(i) - K) > x) {
      |                            ^
a.cc:21:11: error: no match for 'operator+=' (operand types are 'int64_t' {aka 'long int'} and 'std::vector<long int>')
   21 |       sum += x;
      |       ~~~~^~~~