Language: C++

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

#define REP(i, n) for(int i=0; i<n;i++)
#define REPR(i, n) for(int i=n-1 ; i>=0; i--)
#define FOR(i, m, n) for(int i=m; i<n; i++)

#define INF 2e9
#define ll long long

int main(){
    string s, t;
    cin>>s>>t;

    int i, j;

    for(i=0; i<s.length(); i++){
        if(s==t){
            cout<<"Yes"<<endl;
            return 0;
        }
        s = s.back + s.substr(0, s.size()-1);
    }

    cout<<"No"<<endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:20: error: no match for 'operator+' (operand types are '<unresolved overloaded function type>' and 'std::__cxx11::basic_string<char>')
   22 |         s = s.back + s.substr(0, s.size()-1);
      |             ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~
      |               |              |
      |               |              std::__cxx11::basic_string<char>
      |               <unresolved overloaded function type>
In file included from /usr/include/c++/14/bits/stl_algobase.h:67,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:627:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_Iterator> std::operator+(typename reverse_iterator<_Iterator>::difference_type, const reverse_iterator<_Iterator>&)'
  627 |     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:627:5: note:   template argument deduction/substitution failed:
a.cc:22:44: note:   'std::__cxx11::basic_string<char>' is not derived from 'const std::reverse_iterator<_Iterator>'
   22 |         s = s.back + s.substr(0, s.size()-1);
      |                                            ^
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename move_iterator<_IteratorL>::difference_type, const move_iterator<_IteratorL>&)'
 1798 |     operator+(typename move_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note:   template argument deduction/substitution failed:
a.cc:22:44: note:   'std::__cxx11::basic_string<char>' is not derived from 'const std::move_iterator<_IteratorL>'
   22 |         s = s.back + s.substr(0, s.size()-1);
      |                                            ^
In file included from /usr/include/c++/14/string:54,
                 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/basic_string.h:3598:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3598 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3598:60: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'const std::__cxx11::basic_string<char>&'
 3598 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3616:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3616 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3616:29: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'const char*'
 3616 |     operator+(const _CharT* __lhs,
      |               ~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3635:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3635 |     operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3635:22: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'char'
 3635 |     operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
      |               ~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3652:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3652 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3652:5: note:   template argument deduction/substitution failed:
a.cc:22:44: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'const __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type& (std::__cxx11::basic_string<char>::*)() const noexcept' {aka 'const char& (std::__cxx11::basic_string<char>::*)() const noexcept'}
   22 |         s = s.back + s.substr(0, s.size()-1);
      |                                            ^
a.cc:22:44: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type& (std::__cxx11::basic_string<char>::*)() noexcept' {aka 'char& (std::__cxx11::basic_string<char>::*)() noexcept'}
a.cc:22:44: note:   mismatched types 'const _CharT*' and 'std::__cxx11::basic_string<char>'
/usr/include/c++/14/bits/basic_string.h:3670:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
 3670 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3670:5: note:   template argument deduction/substitution failed:
a.cc:22:44: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'const __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type& (std::__cxx11::basic_string<char>::*)() const noexcept' {aka 'const char& (std::__cxx11::basic_string<char>::*)() const noexcept'}
   22 |         s = s.back + s.substr(0, s.size()-1);
      |                                            ^
a.cc:22:44: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type& (std::__cxx11::basic_string<char>::*)() noexcept' {aka 'char& (std::__cxx11::basic_string<char>::*)() noexcept'}
a.cc:22:44: note:   couldn't deduce template parameter '_Traits'
/usr/include/c++/14/bits/basic_string.h:3682:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3682 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3682:55: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::__cxx11::basic_string<char>&&'
 3682 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3689:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3689 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3689:60: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'const std::__cxx11::basic_string<char>&'
 3689 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3696:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3696 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3696:55: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::__cxx11::basic_string<char>&&'
 3696 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3719:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3719 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3719:29: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'const char*'
 3719 |     operator+(const _CharT* __lhs,
      |               ~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3726:5: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 3726 |     operator+(_CharT __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3726:22: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'char'
 3726 |     operator+(_CharT __lhs,
      |               ~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:3733:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::bas