Language: C++

#include <bits/stdc++.h>
using namespace std;
long long hh(int n){
  int ans;
  if(n==1) return 0;
  
  return ans=hh(n-1)+n-1;
}
int main(){
  int n;
  cin>>n;
  vector<string> a(n);
  for(int i=0;i<n;i++){
    cin>>a[i];
    sort(a[i].begin(),a.end());
    
  }
  sort(a.begin(),a.end());
  a.push_back("####");
  long long ans=0;
  int cut=1;
  for(int i=0;i<n;i++){
    if(a[i]==a[i+1]){
      cut++;
    }
    else if(a[i]!=a[i+1]){
      ans+=hh(cut);
    }
         

Compiler output:
a.cc: In function 'int main()':
a.cc:15:9: error: no matching function for call to 'sort(std::__cxx11::basic_string<char>::iterator, std::vector<std::__cxx11::basic_string<char> >::iterator)'
   15 |     sort(a[i].begin(),a.end());
      |     ~~~~^~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:4762:5: note: candidate: 'template<class _RAIter> void std::sort(_RAIter, _RAIter)'
 4762 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4762:5: note:   template argument deduction/substitution failed:
a.cc:15:9: note:   deduced conflicting types for parameter '_RAIter' ('__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >' and '__gnu_cxx::__normal_iterator<std::__cxx11::basic_string<char>*, std::vector<std::__cxx11::basic_string<char> > >')
   15 |     sort(a[i].begin(),a.end());
      |     ~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4793:5: note: candidate: 'template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare)'
 4793 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4793:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator, class _Compare> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare)'
  292 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note:   candidate expects 4 arguments, 2 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator)'
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note:   candidate expects 3 arguments, 2 provided
a.cc:28:6: error: expected '}' at end of input
   28 |     }
      |      ^
a.cc:22:23: note: to match this '{'
   22 |   for(int i=0;i<n;i++){
      |                       ^
a.cc:28:6: error: expected '}' at end of input
   28 |     }
      |      ^
a.cc:9:11: note: to match this '{'
    9 | int main(){
      |           ^