Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define se second
#define fi first
#define pb push_back
const int N = 2e5 +5;
int a[N], b[N], na[N], nb[N];

int main(){

//	freopen("in.txt","r",stdin);

	int n;
	scanf("%d",&n);
	for (int i=0; i<n; i++)scanf("%d", a +i);
	for (int i=0; i<n; i++)scanf("%d", b +i);

	int ans =0;
	for (int i=0; i<29; i++){

		for (int j=0; j<n; j++)na[j] = a[j] % (1 <<(i +1));
		for (int j=0; j<n; j++)nb[j] = b[j] % (1 <<(i +1));

		sort (nb, nb +n);

		int sum =0, d = (1 <<i);
		for (int j=0; j<n; j++){
			sum += max (0,lower_bound (nb, nb +n, 2*d - na[j]) - lower_bound (nb, nb +n, d - na[j]));
			sum += max (0,lower_bound (nb, nb +n, 4*d - na[j]) - lower_bound (nb, nb +n, 3*d - na[j]));
		}
		if (sum &1)ans |= 1<<i;
	}
	cout <<ans <<endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:36: error: no matching function for call to 'max(int, long int)'
   29 |                         sum += max (0,lower_bound (nb, nb +n, 2*d - na[j]) - lower_bound (nb, nb +n, d - na[j]));
      |                                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included 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_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:29:36: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long int')
   29 |                         sum += max (0,lower_bound (nb, nb +n, 2*d - na[j]) - lower_bound (nb, nb +n, d - na[j]));
      |                                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:29:36: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   29 |                         sum += max (0,lower_bound (nb, nb +n, 2*d - na[j]) - lower_bound (nb, nb +n, d - na[j]));
      |                                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:30:36: error: no matching function for call to 'max(int, long int)'
   30 |                         sum += max (0,lower_bound (nb, nb +n, 4*d - na[j]) - lower_bound (nb, nb +n, 3*d - na[j]));
      |                                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:30:36: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long int')
   30 |                         sum += max (0,lower_bound (nb, nb +n, 4*d - na[j]) - lower_bound (nb, nb +n, 3*d - na[j]));
      |                                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:30:36: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   30 |                         sum += max (0,lower_bound (nb, nb +n, 4*d - na[j]) - lower_bound (nb, nb +n, 3*d - na[j]));
      |                                ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~