Language: C++

#include<bits/stdc++.h>
int main(){
  string.S;
  cin>>S;
  int N=S.size();
  vector<char>list1((N-1)/2);
  vector<char>list2((N-1)/2);
  vector<char>list3((N-1)/2);
  vector<char>list4((N-1)/2);
  for(int i=0;i<(N-1)/2;i++){
    list1.at(i)=S.at(i);
    list3.at((N-1)/2-1-i)=S.at(i);
    list2.at(i)=S.at(N-i);
    list4.at((N-1)/2-1-i)=S.at(N-i);
  }
  if(list1==list3&&list2==list4){
    cout<<"Yes"<<endl;
  }
  else{
    cout<<"No"<<endl;
  }
}
  
    

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'string' was not declared in this scope
    3 |   string.S;
      |   ^~~~~~
a.cc:3:3: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:4:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   cin>>S;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:4:8: error: 'S' was not declared in this scope
    4 |   cin>>S;
      |        ^
a.cc:6:3: error: 'vector' was not declared in this scope
    6 |   vector<char>list1((N-1)/2);
      |   ^~~~~~
a.cc:6:3: note: suggested alternatives:
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/14/vector:93:13: note:   'std::pmr::vector'
   93 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
a.cc:6:10: error: expected primary-expression before 'char'
    6 |   vector<char>list1((N-1)/2);
      |          ^~~~
a.cc:7:10: error: expected primary-expression before 'char'
    7 |   vector<char>list2((N-1)/2);
      |          ^~~~
a.cc:8:10: error: expected primary-expression before 'char'
    8 |   vector<char>list3((N-1)/2);
      |          ^~~~
a.cc:9:10: error: expected primary-expression before 'char'
    9 |   vector<char>list4((N-1)/2);
      |          ^~~~
a.cc:11:5: error: 'list1' was not declared in this scope
   11 |     list1.at(i)=S.at(i);
      |     ^~~~~
a.cc:12:5: error: 'list3' was not declared in this scope
   12 |     list3.at((N-1)/2-1-i)=S.at(i);
      |     ^~~~~
a.cc:13:5: error: 'list2' was not declared in this scope
   13 |     list2.at(i)=S.at(N-i);
      |     ^~~~~
a.cc:14:5: error: 'list4' was not declared in this scope
   14 |     list4.at((N-1)/2-1-i)=S.at(N-i);
      |     ^~~~~
a.cc:16:6: error: 'list1' was not declared in this scope
   16 |   if(list1==list3&&list2==list4){
      |      ^~~~~
a.cc:16:13: error: 'list3' was not declared in this scope
   16 |   if(list1==list3&&list2==list4){
      |             ^~~~~
a.cc:16:20: error: 'list2' was not declared in this scope
   16 |   if(list1==list3&&list2==list4){
      |                    ^~~~~
a.cc:16:27: error: 'list4' was not declared in this scope
   16 |   if(list1==list3&&list2==list4){
      |                           ^~~~~
a.cc:17:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   17 |     cout<<"Yes"<<endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:17:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   17 |     cout<<"Yes"<<endl;
      |                  ^~~~
      |                  std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:20:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   20 |     cout<<"No"<<endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:20:17: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   20 |     cout<<"No"<<endl;
      |                 ^~~~
      |                 std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~