#include <bits/stdc++.h>
#pragma GCC optimize(3)
using namespace std;
bool Finish_read;
template <class T>
inline void read(T &x) {
  Finish_read = 0;
  x = 0;
  int f = 1;
  char ch = getchar();
  while (!isdigit(ch)) {
    if (ch == '-') f = -1;
    if (ch == EOF) return;
    ch = getchar();
  }
  while (isdigit(ch)) x = x * 10 + ch - '0', ch = getchar();
  x *= f;
  Finish_read = 1;
}
template <class T>
inline void print(T x) {
  if (x / 10 != 0) print(x / 10);
  putchar(x % 10 + '0');
}
template <class T>
inline void writeln(T x) {
  if (x < 0) putchar('-');
  x = abs(x);
  print(x);
  putchar('\n');
}
template <class T>
inline void write(T x) {
  if (x < 0) putchar('-');
  x = abs(x);
  print(x);
}
int n, v[105];
int main() {
  read(n);
  int d;
  read(d);
  for (int i = 1; i <= n; i++) read(v[i]);
  sort(v + 1, v + n + 1);
  int ans = 0;
  for (int i = 1; i <= n; i++)
    for (int j = i; j <= n; j++)
      if (v[j] - v[i] <= d) ans = max(ans, j - i + 1);
  printf("%d\n", n - ans);
  return 0;
}
