Language: C++

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

int main(){
  int N, L;
  cin>>N>>L;
  vector<string> S(N);
  for(int i=0;i<N;i++)	cin>>S[i];
  sort(S.begin(), S.end());
  string ans = "";
  for(int i=0;i<N;i++)	ans+=S[i];
  cout<<ans;
  return 0;
}


Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namepsace'
    2 | using namepsace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin>>N>>L;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 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:7:3: error: 'vector' was not declared in this scope
    7 |   vector<string> S(N);
      |   ^~~~~~
a.cc:7:3: 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:7:10: error: 'string' was not declared in this scope
    7 |   vector<string> S(N);
      |          ^~~~~~
a.cc:7:10: 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:
/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:7:18: error: 'S' was not declared in this scope
    7 |   vector<string> S(N);
      |                  ^
a.cc:9:3: error: 'sort' was not declared in this scope; did you mean 'std::sort'?
    9 |   sort(S.begin(), S.end());
      |   ^~~~
      |   std::sort
In file included from /usr/include/c++/14/algorithm:86,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: 'std::sort' declared here
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
a.cc:10:9: error: expected ';' before 'ans'
   10 |   string ans = "";
      |         ^~~~
      |         ;
a.cc:11:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
   11 |   for(int i=0;i<N;i++)  ans+=S[i];
      |                         ^~~
      |                         abs
a.cc:12:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   12 |   cout<<ans;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:12:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   12 |   cout<<ans;
      |         ^~~
      |         abs