#include <iostream>
#include <fstream>
using namespace std;

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

int main()
{
	int n, a[10002], l[10002]={0}, val;
	fin >> n;
	for (int i=1; i<=n; i++)
		fin >> a[i];
	l[1]=1;
	for (int i=1; i<n; i++)
	{
		
		for (int j=i+1; j<=n; j++)
		{
			if(a[i]<=a[j] && l[i]+1>l[j])
				l[j]=l[i]+1;
			
		}
	}
	fout << l[n];
	return 0;
}


/*
12
2 5 5 6 2 8 4 0 1 3 5 8
10
6 2 5 6 5 5 4 3 5 8
*/