import java.io.*;
import java.util.*;
public class glo {
public static void main(String[] args) throws IOException {
BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer l1 = new StringTokenizer(scan.readLine()); int num = Integer.parseInt(l1.nextToken()); int x = Integer.parseInt(l1.nextToken());
int[] arr = new int[num]; StringTokenizer st = new StringTokenizer(scan.readLine());
for (int i = 0;i<num;i++) arr[i] = Integer.parseInt(st.nextToken());
int[][] pLIS = new int[num][2]; //For each i, store the LIS up to i and the smallest number it ends on
ArrayList<Integer> dp = new ArrayList<>();
for (int i = 0;i<num;i++) {
int pos = Collections.binarySearch(dp, arr[i]);
if (pos<0) pos = (-1)*pos-1;
if (pos==dp.size()) dp.add(arr[i]);
else dp.set(pos, arr[i]);
pLIS[i][0] = dp.size();
pLIS[i][1] = dp.get(dp.size()-1);
}
int[][] sLIS = new int[num][2]; //For each i, store the LIS from i->num-1 and the largest number it starts on
dp = new ArrayList<>();
for (int i = num-1;i>=0;i--) {
int pos = Collections.binarySearch(dp, arr[i], (k,j)->j-k);
if (pos<0) pos = (-1)*pos-1;
if (pos==dp.size()) dp.add(arr[i]);
else dp.set(pos, arr[i]);
sLIS[i][0] = dp.size();
sLIS[i][1] = dp.get(dp.size()-1);
}
int ans = Math.max(pLIS[0][0], sLIS[num-1][0]);
for (int i = 0;i<num-1;i++) {
if (pLIS[i][1]-x<sLIS[i+1][1]) {
ans = Math.max(ans, pLIS[i][0]+sLIS[i+1][0]);
}
}
System.out.println(ans);
}
}
