#include <bits/stdc++.h>
using namespace std;
int temps[200005];
int pref_longest[200005];
int main() {
int n;
int x;
cin >> n >> x;
for (int i = 0; i < n; i++) {
cin >> temps[i];
}
vector<int> dp(n, INT_MAX);
int longest = 0;
// longest increasing subsequence ending at i
for (int i = 0; i < n; i++) {
int j = lower_bound(dp.begin(), dp.end(), temps[i]) - dp.begin();
dp[j] = temps[i];
pref_longest[i] = j + 1;
longest = max(longest, pref_longest[i]);
}
dp.assign(n,INT_MAX);
// longest decreasing subsequence ending at i of reverse array
// = longest increasing subsequence starting at i
for (int i = n - 1; i >= 0; i--) {
int jj = lower_bound(dp.begin(), dp.end(), -temps[i]) - dp.begin();
dp[jj] = -temps[i];
int j = lower_bound(dp.begin(), dp.end(), -temps[i] + x) - dp.begin();
longest = max(longest, pref_longest[i] + j);
}
cout << longest << endl;
}
