Language: C++

#include<bits/stdc++.h>
using  namespace std;
#define int long long
#define repr(i,n) for(int i=(n);i>=0;i--)
#define rep(i,n) for(int i=0;i<(n);i++)

signed main(){
	int n,k;cin>>n>>k;
	vector<int>a(n);
	for(auto&& u:a)cin>>u;
	string s=to_string(k);
	int m=s.size();
	bool flg=true;
	int ret=0;
	repr(i,m){
	 int tmp=0;
	for(auto&& u:a)tmp+=(a>>i&1);
	int d=max(tmp,n-tmp);
	if(tmp>=n-tmp &&(k>>i&1))flg=false;
	if(!flg||(k>>i&1))ret+=d<<i;
	else ret+=tmp<<i;
	}
	cout<<ret<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:31: error: no match for 'operator>>' (operand types are 'std::vector<long long int>' and 'long long int')
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                              ~^~~
      |                              |  |
      |                              |  long long int
      |                              std::vector<long long int>
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:41,
                 from a.cc:1:
/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:17:30: note:   cannot convert 'a' (type 'std::vector<long long int>') to type 'std::byte'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                              ^
In file included from /usr/include/c++/14/string:55,
                 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.tcc:835:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
  835 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.tcc:835:5: note:   template argument deduction/substitution failed:
a.cc:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/usr/include/c++/14/bitset:1597:5: note: candidate: 'template<class _CharT, class _Traits, long unsigned int _Nb> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, bitset<_Nb>&)'
 1597 |     operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
      |     ^~~~~~~~
/usr/include/c++/14/bitset:1597:5: note:   template argument deduction/substitution failed:
a.cc:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
In file included from /usr/include/c++/14/istream:1109,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<char, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<char, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<char, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<char, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:
/usr/include/c++/14/istream: In substitution of 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = std::vector<long long int>&; _Tp = long long int&]':
a.cc:17:26:   required from here
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/usr/include/c++/14/istream:1099:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
 1099 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/14/complex:509:5: note: candidate: 'template<class _Tp, class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, complex<_Tp>&)'
  509 |     operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
      |     ^~~~~~~~
/usr/include/c++/14/complex:509:5: note:   template argument deduction/substitution failed:
a.cc:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:143:
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/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:17:33: note:   'std::vector<long long int>' is not derived from 'std::basic_istream<_CharT, _Traits>'
   17 |         for(auto&& u:a)tmp+=(a>>i&1);
      |                                 ^
/usr/include/c++/14/iomanip:207:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _Setprecision)'
  207 |     operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f)
      |     ^~~~~~~~
/usr/include/c++/14/