#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
struct SegTree {
int n;
vector<int> st;
SegTree(int _n) : n(_n), st(4 * n, INT_MIN) {
}
void update(int p, int val) {
update(1, 0, n - 1, p, val);
}
int query(int L, int R) {
return query(1, 0, n - 1, L, R);
}
void update(int node, int l, int r, int p, int val) {
if (l == r) {
st[node] = max(st[node], val);
return;
}
int mid = (l + r) >> 1;
if (p <= mid) {
update(node << 1, l, mid, p, val);
}
else {
update(node << 1 | 1, mid + 1, r, p, val);
}
st[node] = max(st[node << 1], st[node << 1 | 1]);
}
int query(int node, int l, int r, int L, int R) {
if (r < L || R < l) return INT_MIN;
if (L <= l && r <= R) return st[node];
int mid = (l + r) >> 1;
return max(query(node << 1, l, mid, L, R), query(node << 1 | 1, mid + 1, r, L, R));
}
};
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
vector<ll> arr(n);
for (int i = 0; i < n; i++) {
cin >> arr[i];
}
vector<ll> vals = arr;
vals.push_back(0);
sort(vals.begin(), vals.end());
vals.erase(unique(vals.begin(), vals.end()), vals.end());
auto idx = [&](ll x) {
return int(lower_bound(vals.begin(), vals.end(), x) - vals.begin());
};
int v = vals.size();
SegTree st(v);
st.update(idx(0), 0);
int best = 0;
for (int i = 0; i < n; i++) {
ll needed = arr[i] - m;
int lo = int(lower_bound(vals.begin(), vals.end(), needed) - vals.begin());
if (lo < 0) lo = 0;
int bestPrev = st.query(lo, v - 1);
int curDp = bestPrev + 1;
best = max(best, curDp);
st.update(idx(arr[i]), curDp);
}
cout << (n - best) << endl;
return 0;
}
