2 1
1 1
 4 1
2 2 1 1
 10 1
2 6 3 4 2 4 4 3 2 1
 2 1
999152 999153
 8 1000000
1 1 5 1000000 1000000 2 2 2
 9 2
1 6 1 5 5 8 6 8 7
 15 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
 1 4
8
 10 1
6 3 1 3 6 4 1 3 6 4
 10 1
1 2 3 5 6 8 10 11 9 4
 7 2
1 5 5 8 9 8 8
 2 1000000
1 1000000
 8 2
3 13 9 8 3 13 9 14
 1 1
1
 2 1
1 2

2
 2
 4
 1
 2
 4
 15
 1
 7
 2
 4
 1
 5
 1
 1

#include <bits/stdc++.h>
using namespace std;
void codeforces_edu_45_A() {
  long long n, m, a, b;
  scanf("%lld %lld %lld %lld", &n, &m, &a, &b);
  if (n % m == 0) {
    printf("0");
    return;
  } else {
    long long i = m - n % m;
    long long j = n % m;
    if (a * i < b * j) {
      printf("%lld", a * i);
    } else {
      printf("%lld", b * j);
    }
  }
}
void codeforces_edu_45_B() {
  int n, k;
  scanf("%d %d", &n, &k);
  int a[1000005];
  for (int i = 0; i < 1000005; i++) {
    a[i] = 0;
  }
  for (int i = 0; i < n; i++) {
    int t;
    scanf("%d", &t);
    a[t]++;
  }
  int ans = 0;
  int minmin = 100000000;
  for (int i = 1000000; i > 0; i--) {
    if (a[i] == 0) {
      continue;
    } else {
      if (i < minmin) {
        ans += a[i];
      }
      minmin = i - k;
    }
  }
  printf("%d", ans);
}
void codeforces_edu_45_C() {}
void codeforces_edu_45_D() {}
void codeforces_edu_45_E() {}
void codeforces_edu_45_F() {}
int main() {
  codeforces_edu_45_B();
  codeforces_edu_45_C();
  codeforces_edu_45_D();
  codeforces_edu_45_E();
  codeforces_edu_45_F();
}
