Apartments

input/code.cpp: In function 'int main()':
input/code.cpp:40:22: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   40 |     while (apartment < apartments & applicant < applicants)
      |            ~~~~~~~~~~^~~~~~~~~~~~
input/code.cpp:42:33: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   42 |         if (requests[applicant] >= sizes[apartment] - k & requests[applicant] <= sizes[apartment] + k)

#include <iostream>
#include <algorithm>
#include <vector>
typedef long long ll;

using namespace std;

int main()
{

    int applicants, apartments, k;

    cin >> applicants >> apartments >> k;

    vector<int> requests(applicants, 0);
    vector<int> sizes(apartments, 0);

    int input;
    for (int i = 0; i < applicants; ++i)
    {   
        cin >> input;
        requests[i] = input;
    }


    for (int i = 0; i < apartments; ++i)
    {   
        cin >> input;
        sizes[i] = input;
    }

    int matches = 0;

    int apartment = 0;
    int applicant = 0;

    std::sort(requests.begin(), requests.end());
    std::sort(sizes.begin(), sizes.end());

    while (apartment < apartments & applicant < applicants)
    {   
        if (requests[applicant] >= sizes[apartment] - k & requests[applicant] <= sizes[apartment] + k)
        {
            ++matches;
            ++apartment;
            ++applicant;
        }
        else if (requests[applicant] > sizes[apartment] + k)
        {
            ++apartment;
        }
        else
        {
            ++applicant;
        }
    }

    cout << matches << '\n';

    return 0;

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED