//https://infoarena.ro/problema/scmax
#include <iostream>
#include <cstdio>
using namespace std;

int n,a[100000],i,lg[100000],ind;

int main()
{
freopen("scmax.in","r",stdin);
freopen("scmax.out","w",stdout);
scanf("%d",&n);
for(i=1;i<=n;i++)
    scanf("%d",&a[i]);
lg[n]=1;
int max=0;
ind=n;
for(i=n-1;i>0;i--)
    {
        for(int j=i+1;j<=n;j++)
            if(max<lg[j] && a[i]<=a[ind])
                {
                    max=lg[j];
                    ind=j;
                }
        if(a[i]<=a[ind])
            lg[i]=max+1;
    }
printf("%d\n",max);



    return 0;
}