#include<bits/stdc++.h>
using namespace std;
#define ALL(x) x.begin(),x.end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl;
#define mod 1000000007
using ll=long long;
const int INF=1000000000;
const ll LINF=1001002003004005006ll;
int dx[]={1,0,-1,0},dy[]={0,1,0,-1};
// ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;}
template<class T>bool chmin(T &a,const T &b){if(b<a){a=b;return true;}return false;}
 
// struct IOSetup{
//     IOSetup(){
//         cin.tie(0);
//         ios::sync_with_stdio(0);
//         cout<<fixed<<setprecision(12);
//     }
// } iosetup;
 
template<typename T1,typename T2>
ostream &operator<<(ostream &os,const pair<T1,T2>&p){
    os<<p.first<<" "<<p.second;
    return os;
}
 
template<typename T>
ostream &operator<<(ostream &os,const vector<T>&v){
    for(int i=0;i<(int)v.size();i++) os<<v[i]<<(i+1==(int)v.size()?"":" ");
    return os;
}

template<typename T1,typename T2>
istream &operator>>(istream &is,pair<T1,T2>&p){
    is>>p.first>>p.second;
    return is;
}

template<typename T>
istream &operator>>(istream &is,vector<T>&v){
    for(T &x:v)is>>x;
    return is;
}


int solve(vector<int> a){
    int n=(int)a.size();
    vector<int> l(n);
    {
        stack<int> st;
        rep(i,n){
            while(!st.empty() and st.top()>=a[i]) st.pop();
            st.push(a[i]);
            l[i]=(int)st.size();
        }
    }
    vector<int> r(n);
    {
        stack<int> st;
        for(int i=n-1;i>=0;i--){
            while(!st.empty() and st.top()>=a[i]) st.pop();
            st.push(a[i]);
            r[i]=(int)st.size();
        }
    }
    int ans=0;
    rep(i,n){
        chmax(ans,min(l[i],r[i])-1);
    }
    return ans;
}

signed main(){
    int n;cin>>n;
    vector<int> a(n);
    cin>>a;
    vector<int> b(n);
    rep(i,n)b[i]=-a[i];
    cout<<max(solve(a),solve(b))<<endl;
    return 0;
}