#include<bits/stdc++.h>
using namespace std;
int a[10010],dp[10010];
int n,ans; 
int main(){
	scanf("%d",&n);
	for(int i=1;i<=n;i++){
		scanf("%d",&a[i]);
	}
	for(int i=1;i<=n;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: chenyongtian
	Language: C++
	Result: Accepted
	Time:291 ms
	Memory:2152 kb
****************************************************************/