#include <bits/stdc++.h>
#include <fstream>

using namespace std;

ifstream fin("scmax.in");
ofstream fout("scmax.out");

int main(){
    int n;
    fin>>n;
    vector<int> v(1002),lg(1002);
    for(int i=1;i<=n;i++) fin>>v[i];
    lg[n]=1;
    for(int i=n-1;i>0;i--){
        lg[i]=1;
        for(int j=i+1;j<=n;j++){
            if(v[i]<=v[j]&&lg[i]<lg[j]+1){
                lg[i]=lg[j]+1;
            }
        }
    }
    int max=1;
    for(int i=1;i<=n;i++) if(lg[i]>max) max=lg[i];
    fout<<max<<endl;
    return 0;
}