Language: C++

#include <bits/stdc++.h>
using namespce std;
int main() {
	int n,cnt=0;
	cin >> n;
	vector<string> s(n);
	REP(i, n) {
		cin >> s[i];
		sort(s[i].begin(),s[i].end());
	}
	REP(i, n) for (int j=1;i+j<n;j++) {
		if (s[i] == s[i+j])cnt++;
	}
	cout << cnt << endl;
	return 0;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namespce'
    2 | using namespce std;
      |       ^~~~~~~~
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |         cin >> n;
      |         ^~~
      |         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:6:9: error: 'vector' was not declared in this scope
    6 |         vector<string> s(n);
      |         ^~~~~~
a.cc:6:9: 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:6:16: error: 'string' was not declared in this scope
    6 |         vector<string> s(n);
      |                ^~~~~~
a.cc:6:16: 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:6:24: error: 's' was not declared in this scope
    6 |         vector<string> s(n);
      |                        ^
a.cc:7:13: error: 'i' was not declared in this scope
    7 |         REP(i, n) {
      |             ^
a.cc:7:9: error: 'REP' was not declared in this scope
    7 |         REP(i, n) {
      |         ^~~
a.cc:11:34: error: 'j' was not declared in this scope
   11 |         REP(i, n) for (int j=1;i+j<n;j++) {
      |                                  ^
a.cc:14:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   14 |         cout << cnt << 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:14:24: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   14 |         cout << cnt << 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)
      |     ^~~~