#include <bits/stdc++.h>
#define ll long long
using namespace std;
int main() {
ios::sync_with_stdio(0), cin.tie(0);
int n; cin >> n;
ll x; cin >> x;
ll a[n]; for (auto &e : a) cin >> e;
int dp1[n], dp2[n];
vector <int> v;
for (int i = 0; i < n; i++) {
auto it = lower_bound(v.begin(), v.end(), a[i]);
if (it == v.end()) v.emplace_back(a[i]), dp1[i] = v.size();
else *it = a[i], dp1[i] = it - v.begin() + 1;
}
v.clear();
for (int i = n-1; i >= 0; i--) {
dp2[i] = lower_bound(v.begin(), v.end(), -a[i] + x) - v.begin();
auto it = lower_bound(v.begin(), v.end(), -a[i]);
if (it == v.end()) v.emplace_back(-a[i]);
else *it = -a[i];
}
int mx = 0;
for (int i = 0; i < n; i++) mx = max(mx, dp1[i] + dp2[i]);
cout << mx << '\n';
}
