Language: C++

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

int main(){
  int n,mx=0;
  map<int,string>S;
  string s;
  cin>>n;
  for(int i=0;i<n;i++){
    cin>>s;
    if(S.count[s]){
      S[s]++;
    }else{
      S[s]=0;
    }
  }
  for(auto m:S){
    mx=max(mx,m.first);
  }
  for(auto m:S){
    if(m.first==mx)cout<<m.second<<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:15: error: no match for 'operator[]' (operand types are '<unresolved overloaded function type>' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   11 |     if(S.count[s]){
      |               ^
a.cc:12:8: error: no match for 'operator[]' (operand types are 'std::map<int, std::__cxx11::basic_string<char> >' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   12 |       S[s]++;
      |        ^
In file included from /usr/include/c++/14/map:63,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:152,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_map.h:504:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = int; _Tp = std::__cxx11::basic_string<char>; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, std::__cxx11::basic_string<char> > >; mapped_type = std::__cxx11::basic_string<char>; key_type = int]'
  504 |       operator[](const key_type& __k)
      |       ^~~~~~~~
/usr/include/c++/14/bits/stl_map.h:504:34: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const std::map<int, std::__cxx11::basic_string<char> >::key_type&' {aka 'const int&'}
  504 |       operator[](const key_type& __k)
      |                  ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_map.h:524:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](key_type&&) [with _Key = int; _Tp = std::__cxx11::basic_string<char>; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, std::__cxx11::basic_string<char> > >; mapped_type = std::__cxx11::basic_string<char>; key_type = int]'
  524 |       operator[](key_type&& __k)
      |       ^~~~~~~~
/usr/include/c++/14/bits/stl_map.h:524:29: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::map<int, std::__cxx11::basic_string<char> >::key_type&&' {aka 'int&&'}
  524 |       operator[](key_type&& __k)
      |                  ~~~~~~~~~~~^~~
a.cc:14:8: error: no match for 'operator[]' (operand types are 'std::map<int, std::__cxx11::basic_string<char> >' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   14 |       S[s]=0;
      |        ^
/usr/include/c++/14/bits/stl_map.h:504:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = int; _Tp = std::__cxx11::basic_string<char>; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, std::__cxx11::basic_string<char> > >; mapped_type = std::__cxx11::basic_string<char>; key_type = int]'
  504 |       operator[](const key_type& __k)
      |       ^~~~~~~~
/usr/include/c++/14/bits/stl_map.h:504:34: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const std::map<int, std::__cxx11::basic_string<char> >::key_type&' {aka 'const int&'}
  504 |       operator[](const key_type& __k)
      |                  ~~~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_map.h:524:7: note: candidate: 'std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](key_type&&) [with _Key = int; _Tp = std::__cxx11::basic_string<char>; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, std::__cxx11::basic_string<char> > >; mapped_type = std::__cxx11::basic_string<char>; key_type = int]'
  524 |       operator[](key_type&& __k)
      |       ^~~~~~~~
/usr/include/c++/14/bits/stl_map.h:524:29: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::map<int, std::__cxx11::basic_string<char> >::key_type&&' {aka 'int&&'}
  524 |       operator[](key_type&& __k)
      |                  ~~~~~~~~~~~^~~