#include <iostream>
#include <fstream>
using namespace std;
int a[100001],n,mx[100001],l,k;
///int ord[100001];
ifstream in ("scmax.in");
ofstream out ("scmax.out");
void dbg()
{
    int i;
    cout<<endl;
    for(i=1; i<=n; i++)
        cout<<mx[i]<<" ";
    cout<<endl;
}
int main()
{
    int i;
    in>>n;
    for(i=1; i<=n; i++)
        in>>a[i];

    i=n;
    mx[i]=1;
    ///ord[i]=n;
    for(i=n-1; i>0; i--)
    {
        mx[i]=1; ///ord[i]=i;
        for(int j=i+1; j<=n; j++)
        {
            if(a[j]>a[i]&&mx[i]<=mx[j])
            {
                mx[i]=1+mx[j];
               /// ord[i]=j;
            }
        }
        if(l<mx[i])
        {
            l=mx[i];
            k=i;
        }
    }

    out<<mx[k]<<"\n";//dbg();
out<<k<<" ";
    for(i=k+1; i<=n; i++)
    {
        if(mx[i]==mx[k]-1)
        {
            if(a[i]!=a[k])
            {
                out<<a[i]<<" ";
                k=i;
            }
        }
    }


    return 0;
}