#include<iostream>
#include<fstream>
using namespace std;
ifstream in("scmax.in");
ofstream out("scmax.out");
int i,j,p,maxim,v[100010],d[100010],poz[100010],n;
int main()
{

    in>>n;
    for(i=1;i<=n;i++)
        in>>v[i];

    d[n]=1;
    poz[n]=0;
    for(i=n-1;i>=1;i--)
    {
        maxim=0;
        p=0;
        for(j=i+1;j<=n;j++)
            if(d[j]>maxim && v[i]<v[j])
            {
            maxim=d[j];
            p=j;
            }
            d[i]=1+maxim;
            poz[i]=p;
            }
        p=1;
        for(i=2;i<=n;i++)
            if(d[i]>d[p]) p=i;
        out<<d[p]<<endl;
        while(p>0)
        {
        out<<v[p]<<" ";
        p=poz[p];
        }
    return 0;
    }