Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
using namespace std;

int main (){
  int n;
  cin >> n;
  vector<string> vec;
  string s;
  for (int i=0;i<n;i++) {
    vector<char> vechar;
    cin >> s;
    for (int j=0;j<10;j++){
      vechar.push_back(s[j]);
    }
    sort(vechar.begin(),vechar.end());
    int j=0;
    for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      s[j]=*vechar_;
      j++;
    }
    vec.push_back(s);
  }
  sort(vec.begin(),vec.end());
  long long int count=0;
  vector<string>::iterator sx = vec.begin();
  long long int count_=0;
  int count__=0;
  for (int i=0;i<n;i++){
    if (*sx==*(sx+1)){
      if (count_==0){
        count_=1;
      }
      count_++;
    } else {
      count+=count_*(count_-1)/2;
      count_=0;
    }
    sx++;
  }
  cout << count;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:57: error: conversion from '__normal_iterator<char*,vector<char>>' to non-scalar type '__normal_iterator<std::__cxx11::basic_string<char>*,vector<std::__cxx11::basic_string<char>>>' requested
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                             ~~~~~~~~~~~~^~
a.cc:20:67: error: no match for 'operator!=' (operand types are 'std::vector<std::__cxx11::basic_string<char> >::iterator' and 'std::vector<char>::iterator')
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                            ~~~~~~~^~~~~~~~~~~~~~
      |                                                            |                  |
      |                                                            |                  __normal_iterator<char*,vector<char>>
      |                                                            __normal_iterator<std::__cxx11::basic_string<char>*,vector<std::__cxx11::basic_string<char>>>
In file included from /usr/include/c++/14/iosfwd:42,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/postypes.h:197:5: note: candidate: 'template<class _StateT> bool std::operator!=(const fpos<_StateT>&, const fpos<_StateT>&)'
  197 |     operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/postypes.h:197:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::fpos<_StateT>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44:
/usr/include/c++/14/bits/allocator.h:243:5: note: candidate: 'template<class _T1, class _T2> bool std::operator!=(const allocator<_CharT>&, const allocator<_T2>&)'
  243 |     operator!=(const allocator<_T1>&, const allocator<_T2>&)
      |     ^~~~~~~~
/usr/include/c++/14/bits/allocator.h:243:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::allocator<_CharT>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
In file included from /usr/include/c++/14/string:48:
/usr/include/c++/14/bits/stl_iterator.h:455:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  455 |     operator!=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:455:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::reverse_iterator<_Iterator>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
/usr/include/c++/14/bits/stl_iterator.h:500:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  500 |     operator!=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:500:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::reverse_iterator<_Iterator>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1686 |     operator!=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::move_iterator<_IteratorL>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1753 |     operator!=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::move_iterator<_IteratorL>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/string:51:
/usr/include/c++/14/bits/stl_pair.h:1052:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator!=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1052 |     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1052:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::pair<_T1, _T2>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54:
/usr/include/c++/14/string_view:651:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  651 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:651:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   '__gnu_cxx::__normal_iterator<std::__cxx11::basic_string<char>*, std::vector<std::__cxx11::basic_string<char> > >' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
/usr/include/c++/14/string_view:658:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  658 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:658:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   '__gnu_cxx::__normal_iterator<std::__cxx11::basic_string<char>*, std::vector<std::__cxx11::basic_string<char> > >' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
/usr/include/c++/14/string_view:666:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  666 |     operator!=(__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:666:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   '__gnu_cxx::__normal_iterator<char*, std::vector<char> >' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
/usr/include/c++/14/bits/basic_string.h:3833:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3833 |     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3833:5: note:   template argument deduction/substitution failed:
a.cc:20:80: note:   'std::vector<std::__cxx11::basic_string<char> >::iterator' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   20 |     for (vector<string>::iterator vechar_ = vechar.begin();vechar_!=vechar.end();vechar_++){
      |                                                                                ^
/usr/include/c++/14/bits/basic_string.h:3847:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3847 |     operator!=(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3847:5: note: