Help me in solving NICEARRAY problem

help
,
1

My issue

on which test case does my code fails

My code

#include <iostream>

#include <vector>

#include <algorithm>

#include <string>

using namespace std;

int main() {
    int t;
    cin >> t;
    while (t--)
    {
        int n, k;
        cin >> n >> k;
        int a[n];
        long long sum = 0;
        int counter = 0;
        for (int i = 0; i < n; i++)
        {
            cin >> a[i];
            if (a[i] % k == 0)
            {
                sum += (a[i] / k);
            }
            else {
                sum += ((a[i] + k - 1) / k);
                counter++;
            }
        }
        if (sum <= counter && sum >= 0)
        {
            cout << "YES" << endl;
        }
        else cout << "NO" << endl;
    }

    return 0;
}

Problem Link: Nice Array Practice Coding Problem