#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define imie(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n'
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
const int mod=1e9+7;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
int n, m;
cin >> n >> m;
vector<int> v(n);
int ans = 0;
for(int i = 0; i < n; i++) {
cin >> v[i];
}
int akt = 0;
for(int i = 0; i < n; i++) {
if(akt + m < v[i]) {
akt = m;
ans++;
} else {
akt = v[i];
}
}
cout << ans;
return 0;
}
