#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define Fast_IO ios::sync_with_stdio(false);
#define DEBUG fprintf(stderr,"Running on Line %d in Function %s\n",__LINE__,__FUNCTION__)
//mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
#define fir first
#define sec second
#define mod 998244353
#define ll long long
#define inf 0x3f3f3f3f
#define INF 0x3f3f3f3f3f3f3f3f
inline int read()
{
char ch=getchar(); int nega=1; while(!isdigit(ch)) {if(ch=='-') nega=-1; ch=getchar();}
int ans=0; while(isdigit(ch)) {ans=ans*10+ch-48;ch=getchar();}
if(nega==-1) return -ans;
return ans;
}
typedef pair<int,int> pii;
void print(vector<int> x){for(int i=0;i<(int)x.size();i++) printf("%d%c",x[i]," \n"[i==(int)x.size()-1]);}
#define N 200005
int a[N],n,d,b[N],f[N];
int get()
{
for(int i=1;i<=n;i++) f[i]=1;
for(int i=1;i<=n;i++)
{
for(int j=1;j<i;j++) if(b[i]>b[j]) f[i]=max(f[i],f[j]+1);
}
int ans=0;
for(int i=1;i<=n;i++) ans=max(ans,f[i]);
// for(int i=1;i<=n;i++) printf("%d%c",b[i]," \n"[i==n]);
// cout<<ans<<endl;
return ans;
}
signed main()
{
cin>>n>>d;
for(int i=1;i<=n;i++) a[i]=read();
int ans=0;
for(int i=1;i<=n;i++)
{
for(int j=1;j<i;j++) b[j]=a[j];
for(int j=i;j<=n;j++) b[j]=a[j]+d;
ans=max(ans,get());
}
cout<<ans<<endl;
return 0;
}
