Language: C++

#include <iostream>
#include <algorithm>
#include <iomanip>
#include <string>
#include <vector>
#include <math.h>
#include <queue>
#include <deque>
#include <map>
const int MOD = 1e9+7;
typedef long long ll;
using namespace std;

ll llmax(ll x, ll y){
	if (x > y) return x;
	return y;
}


int main(){
	ll n, k, ans = 0;
	cin >> n >> k;
	vector<ll> a(n);
	for (int i = 0; i < n; i++){
		cin >> a[i];
	}

	ll digit = 0;
	for (int i = 0; i < 50; i++){
		if ((1LL<<i) > k){
			digit = i;
			break;
		}
	}
	for (int i = 0; i < n; i++){
		for (int j = 0; j < 50; j++){
			if ((1LL<<j) > a[i]){
				digit = max(digit, j);
				break;
			}
		}
	}

	vector<ll> coun(digit);
	for (int i = 0; i < digit; i++){
		coun[i] = 0;
	}
	for (int i = 0; i < digit; i++){
		for (int j = 0; j < n; j++){
			if (a[j] & (1LL<<i)) coun[i]++;
		}
	}


	for (int i = 0; i < digit; i++){
		if ((1LL<<i) & k) ans += (1LL<<i)*llmax(coun[i], n-coun[i]);
		else ans += (1LL<<i)*(coun[i]);
	}
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:38:44: error: no matching function for call to 'max(ll&, int&)'
   38 |                                 digit = max(digit, j);
      |                                         ~~~^~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 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_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:38:44: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   38 |                                 digit = max(digit, 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,
                 from a.cc:2:
/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:38:44: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   38 |                                 digit = max(digit, j);
      |                                         ~~~^~~~~~~~~~