#include<bits/stdc++.h>
using namespace std;
const int N=1005;
const int INF=0x3f3f3f3f;
int n,a[N],up[N],down[N],ans,f;
int main(){
    cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		up[i]=1;
		down[i]=1;

	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<i;j++){
			if(a[j]<a[i])
			    up[i]=max(up[i],up[j]+1);
		}
	}
	for(int i=n;i>=1;i--){
		for(int j=i+1;j<=n;j++){
			if(a[j]<a[i])
			    down[i]=max(down[i],down[j]+1);
		}
	}
	for(int i=1;i<=n;i++){
		ans=max(ans,up[i]-1+down[i]);
	}
	cout<<ans;
	return 0;
}