#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int main()
{
    int v[101], L[101], poz[101],poz1=0, n, i, j, max1=-20000000, maxL=-20000000;
    cin>>n;
    for (i=1;i<=n;i++)
    {
        cin>>v[i];
         if (i==1)
            L[i]=0;
        else
            {
            for(j=1;j<i;++j)
            {
                if(v[i]>=v[j] && L[j]>max1)
                    {
                        max1=L[j];
                        poz[i]=j;
                    }
            }
            L[i]=max1+1;

        }
        if (maxL<L[i])
        {
            maxL=L[i];
            poz1=i;
        }

    }
        cout<<maxL;


}