#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,m,p, v[100001], pos[100001], l[100001];
void read()
{
    fin>>n;
    for(int i=1;i<=n;i++)
        fin>>v[i];
}
void sir()
{
    for(int i=n;i>=1;i--)
    {
        l[i]=1;
        pos[i]=0;
        for(int j=i+1;j<=n;j++)
            if(v[j]>v[i] && l[j]>=l[i])
            {
                pos[i]=j;
                l[i]=l[j]+1;
                if(l[i]>m)
                {
                    m=l[i];
                    p=i;
                }
            }
    }
}

int main()
{
    read();
    sir();
    fout<<m<<endl;
     while(pos[p]!=0)
    {
        fout<<v[p]<<" ";
        p=pos[p];
    }
    fout<<v[p];

    return 0;
}