Language: C++

#include <iostream>
#include <map>
using namespace std;

int main(){
  int n;
  cin >> n;
  map<int, int> m;
  for(int i=0; i<n; i++){
    int num;
    cin >> num;
    m[num]++;
  }
  auto itr = m.begin();
  if(m.size() == 3){
    if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      if((*(itr + 1)).first ^ (*(itr + 2)).first == (*(itr + 3)).first){
        cout << "Yes" << endl;
        return 0;
      }
    }
  }else if(m.size() == 2 && m[0] = (*(itr + 2)).first/2){
    cout << "Yes" << endl;
    return 0;
  }else if(m.size() == 1 && (*(itr + 1)).first){
    cout << "Yes" << endl;
    return 0;
  }else{
    cout << "No" << endl;
    return 0;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:15: error: no match for 'operator+' (operand types are 'std::_Rb_tree_iterator<std::pair<const int, int> >' and 'int')
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |           ~~~ ^ ~
      |           |     |
      |           |     int
      |           std::_Rb_tree_iterator<std::pair<const int, 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,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:627:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_Iterator> std::operator+(typename reverse_iterator<_Iterator>::difference_type, const reverse_iterator<_Iterator>&)'
  627 |     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:627:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename move_iterator<_IteratorL>::difference_type, const move_iterator<_IteratorL>&)'
 1798 |     operator+(typename move_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
In file included from /usr/include/c++/14/string:54:
/usr/include/c++/14/bits/basic_string.h:3598:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3598 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3598:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   'std::_Rb_tree_iterator<std::pair<const int, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3616:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3616 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3616:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   mismatched types 'const _CharT*' and 'std::_Rb_tree_iterator<std::pair<const int, int> >'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3635:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3635 |     operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3635:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3652:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3652 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3652:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   'std::_Rb_tree_iterator<std::pair<const int, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3670:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
 3670 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3670:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   'std::_Rb_tree_iterator<std::pair<const int, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3682:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3682 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3682:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   'std::_Rb_tree_iterator<std::pair<const int, int> >' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3689:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3689 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3689:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   'std::_Rb_tree_iterator<std::pair<const int, int> >' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3696:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3696 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3696:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   'std::_Rb_tree_iterator<std::pair<const int, int> >' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3719:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3719 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3719:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   mismatched types 'const _CharT*' and 'std::_Rb_tree_iterator<std::pair<const int, int> >'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3726:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3726 |     operator+(_CharT __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3726:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/usr/include/c++/14/bits/basic_string.h:3733:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const _CharT*)'
 3733 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3733:5: note:   template argument deduction/substitution failed:
a.cc:16:17: note:   'std::_Rb_tree_iterator<std::pair<const int, int> >' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   16 |     if((*(itr + 1)).second == n/3 && (*(itr + 2)).second == n/3 && (*(itr + 3)).second == n/3){
      |                 ^
/