#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 42
#endif
const int inf = 2e9;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, d;
cin >> n >> d;
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
}
vector<int> dp(n + 1, inf);
dp[0] = -inf;
vector<int> res(n);
for (int i = n - 1; i >= 0; i--) {
int p = lower_bound(dp.begin(), dp.end(), -a[i]) - dp.begin();
res[i] = p;
dp[p] = -a[i];
}
int ans = 0;
fill(dp.begin(), dp.end(), inf);
dp[0] = -inf;
for (int i = 0; i < n; i++) {
int x = a[i] + d;
int p = lower_bound(dp.begin(), dp.end(), x) - dp.begin() - 1;
ans = max(ans, p + res[i]);
p = lower_bound(dp.begin(), dp.end(), a[i]) - dp.begin();
dp[p] = a[i];
}
cout << ans << '\n';
return 0;
}
