#include <bits/stdc++.h>

using namespace std;

int main() {
    int n, k;
    cin >> n >> k;
    int *s = new int[n];
    for (int i = 0; i < n; ++i) {
        cin >> s[i];
    }
    //排序
    sort(s, s + n);

    int max = INT32_MIN;
    for (int i = 0; i < n - 1; ++i) {
        for (int j = i + 1; j < n; ++j) {
            if (s[j] - s[i] <= k) {
                if (j - i + 1 > max)max = j - i + 1;
            } else {
                break;
            }
        }
    }
    //输出最多的个数
    cout << max << endl;
    //删除动态数组指针
    delete[]s;
    return 0;
}