#include <iostream>
using namespace std;
const int N=3e5+10;
int a[N],dp[N];
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n,d;
cin>>n>>d;
for(int i=1;i<=n;i++)cin>>a[i],dp[i]=1;
for(int i=1;i<=n;i++)
{
int cu=0;
for(int j=i-1;j>=1;j--)
{
if(a[j]>a[i])
{
cu++;
}
else
{
if(cu>=d)
{
break;
}
cu=0;
dp[i]=max(dp[i],dp[j]+(a[j]!=a[i]));
}
}
}
int ans=0;
for(int i=1;i<=n;i++)
{
ans=max(ans,dp[i]);
}
cout<<ans<<endl;
}
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