#include <iostream>
#include <fstream>

using namespace std;

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

int n,a[1001],x[1001],maxt,p;

int main()
{
    f>>n;
    for (int i=1; i<=n; i++)
        f>>a[i];
    for (int i=1; i<=n; i++)
        x[i]=1;
    for (int i=n-1; i>=1; i--)
    {
        int maxi=0;
        for (int j=i+1; j<=n; j++)
        {
            if (a[j]>a[i])
            {
                if (x[j]>maxi)
                {
                    maxi=x[j];
                }
            }
        }
        x[i]=maxi+1;
        if (x[i]>maxt)
        {
            maxt=x[i];
            p=i;
        }
    }
    g<<maxt<<'\n';
    g<<p<<" ";
    /*for (int i=1; i<=n; i++)
        cout<<x[i]<<" ";*/
    for (int i=p+1; i<=n; i++)
    {
        if (x[i]==x[p]-1)
        {
            if (a[i]!=a[p])
            {
                g<<i<<" ";
                p=i;
            }
        }
    }

    return 0;
}