#include <fstream>

using namespace std;
ifstream f ("scmax.in");
ofstream g ("scmax.out");
int n,i,j,lMax,L[100002],a[100002],P,Max,ult;
int main()
{
    f>>n;
    for (i=1;i<=n;i++)
        f>>a[i];
    L[n]=1;
    lMax=0;
    for (i=n-1;i>=1;i--)
    {
        Max=0;
        for (j=i+1;j<=n;j++)
            if (a[i]<a[j] && Max<L[j]) Max=L[j];
        L[i]=Max+1;
        if (lMax<L[i]) {
            lMax=L[i];
            P=i;
        }
    }
    g<<lMax<<'\n';
    ult=a[P]-1;
    for (i=P;i<=n;i++)
        if (a[i]>ult && L[i]==lMax)
        {
            g<<a[i]<<" ";
            ult=a[i];
            lMax--;
        }
    return 0;
}