1#include <algorithm>2#include <cstdio>3#include <cstring>4#define ll long long5int n, k;6int a[200007];7int ans[200007];8int main() {9    scanf("%d%d", &n, &k);10    for (int i = 1; i <= n; ++i) {11        scanf("%d", &a[i]);12    }13    std::sort(a + 1, a + n + 1);14    n = std::unique(a + 1, a + n + 1) - a - 1;15    for (int i = 1, j = 0; i <= n; ++i) {16        for (; j < i && a[i] - a[j + 1] > k; ++j)17            ;18        ans[i] = ans[j] + 1;19    }20    printf("%d\n", ans[n]);21    return 0;22}