#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: linlinzi
	Language: C++
	Result: Accepted
	Time:294 ms
	Memory:2152 kb
****************************************************************/