#include <fstream>
using namespace std;
ifstream f ("scmax.in");
ofstream fout("scmax.out");
long long v[100001], d[100001], p[100001], n, k;
void citire ()
{
int i;

f>>n;
for (i=1;i<=n;i++) f>>v[i];
}
void afisare (int k)
{
while (k>0)
{
fout<<k<<" ";
k=p[k];
}
}
void dinamica ()
{
int i, j, Max, max2=n, poz;
d[n]=1;
p[n]=0;
for (i=n-1; i>=1; i--)
{
poz=0; Max=0;
for (j=i+1; j<=n; j++)
if (v[i]<v[j] && d[j]>Max)
{
Max=d[j];
poz=j;
}
d[i]=1+Max;
p[i]=poz;
if (d[i]>d[max2]) max2=i;
}
fout<<d[max2]<<endl;
afisare (max2);
}
int main()
{
citire();
dinamica();
return 0;
}