Language: C++

#include <iostream>
#include <fstream>
#include <sstream>
#include <iomanip>
#include <vector>
#include <string>
#include <algorithm>
#include <queue>
#include <stack>
#include <map>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <bitset>
#include <limits>
#include <random>
#include <complex>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <tuple>
#include <cassert>
#include <memory>
using namespace std;
typedef long long ll;
template <class T> using reversed_priority_queue = priority_queue<T, vector<T>, greater<T> >;

bool check (string S)
{
    for (int i = 0; i < S.size() / 2; i++) {
        if (S[i] != S[S.size() - 1 - i]) {
            return false;
        }
    }
    return true;
}

int main ()
{
    string s1; sin >> s1;
    int N = (int)s1.size();
    string s2 = s1.substr(0, (N - 1) / 2);
    string s3 = s1.substr((N + 3) / 2 - 1, N - (N + 3) / 2 + 1);

    if (check(s1) && check(s2) && check(s3)) {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:20: error: no match for 'operator>>' (operand types are '<unresolved overloaded function type>' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
   40 |     string s1; sin >> s1;
      |                ~~~~^~~~~
In file included from /usr/include/c++/14/string:54,
                 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/basic_string.h:4064:5: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]'
 4064 |     operator>>(basic_istream<char>& __is, basic_string<char>& __str);
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:4059:48: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'std::basic_istream<char>&'
 4059 |     operator>>(basic_istream<_CharT, _Traits>& __is,
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
In file included from /usr/include/c++/14/bits/memory_resource.h:38,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/cstddef:131:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator>>(byte, _IntegerType)'
  131 |     operator>>(byte __b, _IntegerType __shift) noexcept
      |     ^~~~~~~~
/usr/include/c++/14/cstddef:131:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   cannot convert 'std::sin' (type '<unresolved overloaded function type>') to type 'std::byte'
   40 |     string s1; sin >> s1;
      |                       ^~
In file included from /usr/include/c++/14/istream:1109,
                 from /usr/include/c++/14/iostream:42:
/usr/include/c++/14/bits/istream.tcc:978:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)'
  978 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/14/bits/istream.tcc:978:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_Traits'
/usr/include/c++/14/istream:849:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)'
  849 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/14/istream:849:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_Traits'
/usr/include/c++/14/istream:854:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)'
  854 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/14/istream:854:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_Traits'
/usr/include/c++/14/istream:896:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)'
  896 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:896:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   mismatched types '_CharT*' and 'std::__cxx11::basic_string<char>'
/usr/include/c++/14/istream:939:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)'
  939 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:939:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_Traits'
/usr/include/c++/14/istream:945:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)'
  945 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:945:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_Traits'
/usr/include/c++/14/istream:1099:5: note: candidate: 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)'
 1099 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/14/istream:1099:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   couldn't deduce template parameter '_Istream'
   40 |     string s1; sin >> s1;
      |                       ^~
In file included from a.cc:4:
/usr/include/c++/14/iomanip:76:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Resetiosflags)'
   76 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f)
      |     ^~~~~~~~
/usr/include/c++/14/iomanip:76:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_CharT'
/usr/include/c++/14/iomanip:106:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setiosflags)'
  106 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f)
      |     ^~~~~~~~
/usr/include/c++/14/iomanip:106:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_CharT'
/usr/include/c++/14/iomanip:137:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setbase)'
  137 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f)
      |     ^~~~~~~~
/usr/include/c++/14/iomanip:137:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'float(float)'
   40 |     string s1; sin >> s1;
      |                       ^~
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'long double(long double)'
a.cc:40:23: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'double(double) noexcept'
a.cc:40:23: note:   couldn't deduce template parameter '_CharT'
/usr/include/c++/14/iomanip:177:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setfill<_CharT>)'
  177 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f)
      |     ^~~~~~~~
/usr/include/c++/14/iomanip:177:5: note:   template argument deduction/substitution failed:
a.cc:40:23: note:   mismat