#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define fi first
#define se second
#define pb push_back
const ll mod = 1000000007;
void fastio(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
}
vector <ll> min_num;
ll lis(const vector <ll>& nums){
for (auto num : nums){
auto it = upper_bound(min_num.begin(), min_num.end(), num);
if (it == min_num.end()){
min_num.pb(num);
}
else {
*it = num;
}
}
return min_num.size();
}
int main(){
fastio();
ll n, m, arr[200005], cnt = 0, sec[200005], th[200005];
cin >> n >> m;
for (ll i = 1; i <= n; i++){
cin >> arr[i];
}
vector<ll> v;
for (ll i = 1; i <= n; i++){
if (i * m >= arr[i]) v.pb(arr[i]);
}
ll minus = 0;
auto it = lower_bound(min_num.begin(), min_num.end(), arr[n - 1]);
if (it == min_num.end() && arr[n] - arr[n - 1] <= m) minus = 1;
cout << n - lis(v) - minus << endl;
}
