Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <random>
#include <string>
#include <cmath>
#include <map>


using namespace std;
typedef long long ll;


int main(){

    string S, T;
    cin >> S >> T;
    map<char, vector<char > > s;
    map<char, vector<char > > t;

    sort(S.begin(), S.end());
    sort(T.begin(), T.end());
    //cout << S << endl;
    //cout << T << endl;

    for(ll i = 0; i < S.length(); i++){
        if(s[S[i]].size() == 0){
            s[S[i]].push_back(T[i]);
            if(T[i] != S[i]){
                s[T[i]].push_back(S[i]);
            }
        }else{
            bool f = 0;
            for(ll j = 0; j < s[S[i]].size(); j++){
                if(s[S[i]][j] == T[i]){
                    f = 1;
                    break;
                }
            }
            if(f == 0){
                s[S[i]].push_back(T[i]);
            }
        }
    }

    //1対1か一方通行で対応していれば変換できる
    //対応していなければ無理
    for (const auto& [key, value] : s){
        if(value > 1){
            cout << "No" << endl;
            return 0;
        }
    }

    /* 
    for(ll i = 0; i < S.length(); i++){
        //cout << s[S[i]].size() << endl;
        if(s[S[i]].size() > 1){
            cout << "No" << endl;
            return 0;
        }
    }  
    */
   
    cout << "Yes" << endl;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:49:18: error: no match for 'operator>' (operand types are 'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' and 'int')
   49 |         if(value > 1){
      |            ~~~~~ ^ ~
      |            |       |
      |            |       int
      |            std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type
In file included from /usr/include/c++/14/string:48,
                 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,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:462:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  462 |     operator>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:462:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::reverse_iterator<_Iterator>'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/bits/stl_iterator.h:507:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  507 |     operator>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:507:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::reverse_iterator<_Iterator>'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1714 |     operator>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::move_iterator<_IteratorL>'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1774 |     operator>(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::move_iterator<_IteratorL>'
   49 |         if(value > 1){
      |                    ^
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:1058:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1058 |     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1058:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::pair<_T1, _T2>'
   49 |         if(value > 1){
      |                    ^
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:695:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  695 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:695:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::vector<char>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/string_view:702:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  702 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:702:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::vector<char>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/string_view:710:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  710 |     operator> (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:710:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/bits/basic_string.h:3915:5: 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>&)'
 3915 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3915:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/bits/basic_string.h:3929:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3929 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3929:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   49 |         if(value > 1){
      |                    ^
/usr/include/c++/14/bits/basic_string.h:3942:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3942 |     operator>(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3942:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   mismatched types 'const _CharT*' and 'std::vector<char>'
   49 |         if(value > 1){
      |                    ^
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/tuple:2619:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator>(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2619 |     operator>(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2619:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::tuple<_UTypes ...>'
   49 |         if(value > 1){
      |                    ^
In file included from /usr/include/c++/14/vector:66,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_vector.h:2102:5: note: candidate: 'template<class _Tp, class _Alloc> bool std::operator>(const vector<_Tp, _Alloc>&, const vector<_Tp, _Alloc>&)'
 2102 |     operator>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:2102:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   mismatched types 'const std::vector<_Tp, _Alloc>' and 'int'
   49 |         if(value > 1){
      |                    ^
In file included from /usr/include/c++/14/map:63,
                 from a.cc:7:
/usr/include/c++/14/bits/stl_map.h:1564:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> bool std::operator>(const map<_Key, _Tp, _Compare, _Allocator>&, const map<_Key, _Tp, _Compare, _Allocator>&)'
 1564 |     operator>(const map<_Key, _Tp, _Compare, _Alloc>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_map.h:1564:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::map<_Key, _Tp, _Compare, _Allocator>'
   49 |         if(value > 1){
      |                    ^
In file included from /usr/include/c++/14/map:64:
/usr/include/c++/14/bits/stl_multimap.h:1186:5: note: candidate: 'template<class _Key, class _Tp, class _Compare, class _Alloc> bool std::operator>(const multimap<_Key, _Tp, _Compare, _Allocator>&, const multimap<_Key, _Tp, _Compare, _Allocator>&)'
 1186 |     operator>(const multimap<_Key, _Tp, _Compare, _Alloc>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_multimap.h:1186:5: note:   template argument deduction/substitution failed:
a.cc:49:20: note:   'std::tuple_element<1, const std::pair<const char, std::vector<char> > >::type' is not derived from 'const std::multimap<_Ke