#include <bits/stdc++.h>
namespace ringo {
template <class T>
inline void read(T &x) {
  x = 0;
  register char c = getchar();
  register bool f = 0;
  while (!isdigit(c)) f ^= c == '-', c = getchar();
  while (isdigit(c)) x = x * 10 + c - '0', c = getchar();
  if (f) x = -x;
}
template <class T>
inline void print(T x) {
  if (x < 0) putchar('-'), x = -x;
  if (x > 9) print(x / 10);
  putchar('0' + x % 10);
}
template <class T>
inline void print(T x, char c) {
  print(x), putchar(c);
}
const int N = 2e5 + 10, M = 1e6 + 10;
int n, m, tn, ans;
int a[N], cnt[M];
void main() {
  read(n), read(m);
  for (int i = 1; i <= n; i++) read(a[i]);
  ans = n;
  std::sort(a + 1, a + n + 1);
  for (int i = 1; i <= n; i++) ++cnt[a[i]];
  tn = std::unique(a + 1, a + n + 1) - a - 1;
  for (int i = 2; i <= tn; i++)
    if (a[i - 1] + m >= a[i]) ans -= cnt[a[i - 1]];
  print(ans, '\n');
}
}  // namespace ringo
signed main() { return ringo::main(), 0; }
