#include<iostream>
#include<fstream>
using namespace std;
int main ()
{
    ifstream cin("scmax.in");
    ofstream cout("scmax.out");
    int n,a[1000],lmax=1,i,l,j,st,dr;
    cin>>n;
    for(i=1;i<=n;i++)
        cin>>a[i];
    for(i=1;i<n;i++)
    {
        l=0;
        for(j=i+1;j<=n;j++)
        {
            if(a[i]<a[j]&&a[i]!=a[j])
                l++;
         }
            if(l>lmax)
            {
                lmax=l;
                st=i;
                dr=j-1;
            }

    }
    cout<<lmax<<endl;
    l=0;
    for(i=st;i<=dr;i++)
    {
        if(l<lmax)
        {
            if(a[i]==a[i+1])
            {
                i++;
                cout<<a[i]<<" ";
                l++;
            }
            else
            {
                cout<<a[i]<<" ";
                l++;
            }
        }
    }
    return 0;
    }