#include <fstream>
#define lmax 5001
#define inf 100000000

using namespace std;

ifstream f("subsir2.in");
ofstream g("subsir2.out");

long long i,j,n,mi=inf,mii,sol,ma,maa=inf,poz,nr;
long long a[lmax],b[lmax],ok[lmax],urm[lmax];

int main()
{
    f>>n;

    for (i=1;i<=n;i++)
     {
        f>>a[i];
        if (a[i]<mi)
         {
             mi=a[i];
             ok[i]=1;
         }
     }
     sol=lmax;
    for (i=n;i>=1;i--)
     {
        mi=inf;
        b[i]=inf;
        urm[i]=-1;

        for (j=i+1;j<=n;j++)
          {
           if (a[i]<=a[j])
              {
                if (a[j]<mi && (b[i]>b[j]+1 || (b[i]==b[j]+1 && a[j]<a[urm[i]])))
                 {
                    urm[i]=j;
                    b[i]=b[j]+1;
                 }

                 if (a[j]<mi)
                   mi=a[j];

              }
            }
           if (b[i]==inf)
            {
                b[i]=1;
                urm[i]=i;
            }

          if(ok[i]&&(sol>b[i]||(sol==b[i]&&a[i]<a[poz])))
            {
                poz=i;
                sol=b[i];
            }
    }

     g<<sol<<'\n';

      while (1)
       {
           g<<poz<<" ";

          if (urm[poz]==poz)
            break;
          poz=urm[poz];
       }


    f.close();
    g.close();
}