#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");

const int NMAX = 1e5 + 5;

int dp[NMAX];

int v[NMAX];
int ant[NMAX];

void afisare(int i)
{
    if(i == -1)
        return;
    else
    {
        afisare(ant[i]);
        fout<<v[i]<<' ';
    }
}

int main()
{
    int n, i, j;
    ant[1] = -1;
    fin>>n;
    for(i=1; i<=n; i++)
    {
        fin>>v[i];
        dp[i] = 1;
        for(j=1; j<i; j++)
        {
            int aux = dp[j] + (v[j]<v[i]);
            if(aux > dp[i])
            {
                dp[i] = aux;
                ant[i] = j;
            }

        }
    }

    fout<<dp[n]<<'\n';
    afisare(n);

    fin.close();
    fout.close();
    return 0;

}