#include<bits/stdc++.h>
using namespace std;
/*
10
3 18 7 14 10 12 23 41 16 24
*/
int n,ans,a[10001],dp[10001];
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i]; 
		for(int j=i-1;j>=1;j--){
			if(a[j]<=a[i]) dp[i]=max(dp[i],dp[j]+1);
			ans=max(ans,dp[i]);
			
		}
	}
	cout<<ans+1;
	return 0;
}

/**************************************************************
	Problem: 1794
	User: huangsheng
	Language: C++
	Result: Accepted
	Time:292 ms
	Memory:2152 kb
****************************************************************/