#include <iostream>
#include <fstream>
using namespace std;

ifstream fin("scmax.in");
ofstream fout("scmax.out");

int v[100000] , vd[100000] , vp[100000] , nou[100000];

int main()
{
    int n;
    fin >> n;
    for(int i = 1; i <= n ; ++i)
        fin >> v[i];

    int maxim = 0 , p_max;
    for(int i = 1; i <= n; ++i)
    {
        vd[i] = 1;
        for( int j = i ; j >= 1 ; --j)
        {
            if( v[i] > v[j] && vd[i] <= vd[j])
            {
                vd[i] = vd[j]+1;
                vp[i] = j;
                if(vd[i] > maxim)
                {
                    p_max = i;
                    maxim = vd[i];
                }
            }
        }
    }
    fout << vd[p_max] << '\n';
    nou[vd[p_max]] = v[p_max];
    for( int i = p_max , j = 1 ; j < vd[p_max] ; ++j)
    {
        nou[vd[p_max]-j] = v[vp[i]];
        --i;
    }
    for( int i = 1 ; i <= vd[p_max] ; ++i )
        fout << nou[i] << " ";
}