#include <bits/stdc++.h>
#define fi first
#define se second
#define int long long
using namespace std;
using ll = long long;
using ii = pair<int,int>;
using pii = pair<int,ii>;
using aa = array<int,3>;
const int N = 2e5+5;
const int M = 1e5+5;
const int INF = 1e9;
const int MOD = 1e9+7;
int n, t, x, s, res = 0, a[N];
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
cin >> n >> t;
for (int i = 1; i <= n; i++) cin >> a[i];
if (a[1] > t){
res++;
a[1] = t;
for (int i = 1; i < n; i++){
if (a[i+1] - a[i] > t){
a[i+1] = a[i] + t;
res++;
}
}
cout << res << '\n';
return 0;
}
for (int i = 1; i < n; i++){
if (a[i+1] - a[i] > t){
res++;
}
}
cout << res;
return 0;
}
