#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define F first
#define S second
#define coy cout<<"YES\n"
#define con cout<<"NO\n"
#define co1 cout<<"-1\n"
#define sc(x) scanf("%lld",&x)
#define all(x) x.begin(),x.end()
#define fast ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
const int SI=3e5+7;
ll INF=8e18+7;
int dx[] = {1 , -1 , 0 , 0};
int dy[] = {0 , 0 , 1 , -1};
int MOD=1e9+7;
ll n,x,a[SI],pr[SI];
int main()
{
fast
cin>>n>>x;
for (int i=0;i<n;i++)
cin>>a[i];
vector <ll> dp(n,INF);
for (int i=0;i<n;i++)
{
ll j=lower_bound(dp.begin(),dp.end(),a[i])-dp.begin();
dp[j]=a[i];
pr[i]=j+1;
}
ll ans=0;
vector <ll> dp2(n,INF);
for (int i=n-1;i>=0;i--)
{
ll j=lower_bound(dp2.begin(),dp2.end(),-a[i]+x)-dp2.begin();
ans=max(ans,pr[i]+j);
j=lower_bound(dp2.begin(),dp2.end(),-a[i])-dp2.begin();
dp2[j]=-a[i];
}
cout <<ans<<"\n";
// use scanf not cin
return 0;
}
