Language: C++

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define vll vector<ll>
#define vvll vector<vll>
#define rep(i, n) for(i = 0; i < n; i++)

int main(){
    ll N;
    ll i;
    ll A;
    map<ll, ll> count;
    cin >> N;
    rep(i, N){
        cin >> A;
        if (count.find(A) == count.end()) {
            count[A] = 1;
        } else {
            count[A]++;
        }
    }

    if (count.size() == 1 && count.find(0) != count.end()) {
        cout << "Yes\n";
    } else if (count.size() == 2){
        if (count.find(0) == count.end()) {
            cout << "No\n";
            return 0;
        } else {
            if (count[0] * 2 == *(++count.begin())){
                cout << "Yes\n";
            } else {
                cout << "No\n"
            }
            return 0;
        }
    } else if (count.size() == 3) {
        ll t = -1;
        ll xored = 0;
        for (auto p: count) {
            xored ^= p.first;
            if (t == -1){
                t = p.second;
            } else if (t != p.second) {
                cout << "No\n";
                return 0;
            }
        }
        cout << ((xored == 0) ? "Yes" : "No") << '\n';
    } else{
        cout << "No\n";
    }

    

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:30: error: no match for 'operator==' (operand types are 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'} and 'std::pair<const long long int, long long int>')
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                              ^~ ~~~~~~~~~~~~~~~~~~
      |                                 |
      |                                 std::pair<const long long int, long long int>
In file included from /usr/include/c++/14/regex:68,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:181,
                 from a.cc:1:
/usr/include/c++/14/bits/regex.h:1103:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const sub_match<_BiIter>&)'
 1103 |     operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1103:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/regex.h:1199:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const sub_match<_BiIter>&)'
 1199 |     operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1199:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/regex.h:1274:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(const sub_match<_BiIter>&, __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1274 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1274:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/regex.h:1366:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)'
 1366 |     operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1366:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   'std::pair<const long long int, long long int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/regex.h:1441:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1441 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1441:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/regex.h:1534:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)'
 1534 |     operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1534:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   'std::pair<const long long int, long long int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/regex.h:1613:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1613 |     operator==(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:1613:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/regex.h:2186:5: note: candidate: 'template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator==(const match_results<_BiIter, _Alloc>&, const match_results<_BiIter, _Alloc>&)'
 2186 |     operator==(const match_results<_Bi_iter, _Alloc>& __m1,
      |     ^~~~~~~~
/usr/include/c++/14/bits/regex.h:2186:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::__cxx11::match_results<_BiIter, _Alloc>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_pair.h:1033:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator==(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1033 |     operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1033:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::pair<_T1, _T2>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:67:
/usr/include/c++/14/bits/stl_iterator.h:441:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  441 |     operator==(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:441:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/stl_iterator.h:486:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  486 |     operator==(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:486:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/stl_iterator.h:1667:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator==(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1667 |     operator==(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1667:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
/usr/include/c++/14/bits/stl_iterator.h:1737:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator==(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1737 |     operator==(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1737:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'std::map<long long int, long long int>::mapped_type' {aka 'long long int'}
   31 |             if (count[0] * 2 == *(++count.begin())){
      |                                                  ^
In file included from /usr/include/c++/14/bits/char_traits.h:42,
                 from /usr/include/c++/14/string:42,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/usr/include/c++/14/bits/postypes.h:192:5: note: candidate: 'template<class _StateT> bool std::operator==(const fpos<_StateT>&, const fpos<_StateT>&)'
  192 |     operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/postypes.h:192:5: note:   template argument deduction/substitution failed:
a.cc:31:50: note:   mismatched types 'const std::fpos<_StateT>'