Language: C++

#include <iostream>
#include <vector>
#include <algorithm>

int main(){
  std::vector<int> size[3];
  int x, n, r;
  
  std::cin >> x;
  size.insert(0, x);
  std::cin >> x;
  size.insert(1, x);
  std::cin >> x;
  size.insert(2, x);
  size.sort(size.begin(), size.end());
  
  while(d!=0 && w!=0 && h!=0){
    std::cin >> n;
    for(int i=0; i<n; i++){
      std;;cin >> r;
      if(r>size[1]){
        std::cout << "OK" << std::endl;
      }else{
        std::cout << "NA" << std::endl;
      }
    }
  }
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: request for member 'insert' in 'size', which is of non-class type 'std::vector<int> [3]'
   10 |   size.insert(0, x);
      |        ^~~~~~
a.cc:12:8: error: request for member 'insert' in 'size', which is of non-class type 'std::vector<int> [3]'
   12 |   size.insert(1, x);
      |        ^~~~~~
a.cc:14:8: error: request for member 'insert' in 'size', which is of non-class type 'std::vector<int> [3]'
   14 |   size.insert(2, x);
      |        ^~~~~~
a.cc:15:8: error: request for member 'sort' in 'size', which is of non-class type 'std::vector<int> [3]'
   15 |   size.sort(size.begin(), size.end());
      |        ^~~~
a.cc:15:18: error: request for member 'begin' in 'size', which is of non-class type 'std::vector<int> [3]'
   15 |   size.sort(size.begin(), size.end());
      |                  ^~~~~
a.cc:15:32: error: request for member 'end' in 'size', which is of non-class type 'std::vector<int> [3]'
   15 |   size.sort(size.begin(), size.end());
      |                                ^~~
a.cc:17:9: error: 'd' was not declared in this scope
   17 |   while(d!=0 && w!=0 && h!=0){
      |         ^
a.cc:17:17: error: 'w' was not declared in this scope
   17 |   while(d!=0 && w!=0 && h!=0){
      |                 ^
a.cc:17:25: error: 'h' was not declared in this scope
   17 |   while(d!=0 && w!=0 && h!=0){
      |                         ^
a.cc:20:10: error: expected primary-expression before ';' token
   20 |       std;;cin >> r;
      |          ^
a.cc:20:12: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   20 |       std;;cin >> r;
      |            ^~~
      |            std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:21:11: error: no match for 'operator>' (operand types are 'int' and 'std::vector<int>')
   21 |       if(r>size[1]){
      |          ~^~~~~~~~
      |          |       |
      |          int     std::vector<int>
In file included from /usr/include/c++/14/string:48,
                 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:
/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:21:18: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/string:51:
/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:21:18: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54:
/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:21:18: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   'std::vector<int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
/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:21:18: note:   mismatched types 'const _CharT*' and 'int'
   21 |       if(r>size[1]){
      |                  ^
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:21:18: note:   mismatched types 'const std::tuple<_UTypes ...>' and 'int'
   21 |       if(r>size[1]){
      |                  ^
In file included from /usr/include/c++/14/vector:66,
                 from a.cc:2:
/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:21:18: note:   mismatched types 'const std::vector<_Tp, _Alloc>' and 'int'
   21 |       if(r>size[1]){
      |                  ^