Code : Median of an Array

#include <bits/stdc++.h>
using namespace std;

void solve(vector<int> &a) {
    int n = a.size();

    sort(a.begin(), a.end());
    int ceil = n / 2 + (n % 2 != 0);
    int idx = ceil - 1;

    int last = a[idx], cnt = 0;
    while (idx < n && a[idx] == last) {
        cnt++;
        idx++;
    }
    cout << cnt << endl;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int t;
    cin >> t;
    for (int zz = 0; zz < t; zz++) {
        int n;
        cin >> n;
        vector<int> a(n);
        for (int i = 0; i < n; i++) {
            cin >> a[i];
        }
        solve(a);
    }
    return 0;
}