#include<iostream>
using namespace std;
#include<stdio.h>
FILE *f,*g;
long n,i,j,maxim,l[100003],maximfinal,memorare[100003],m=1,p,b[100];
long long a[100003];
int main()
{
    f=fopen("subsir2.in","r");
    g=fopen("subsir2.out","w");
    fscanf(f,"%ld",&n);
    for(i=1;i<=n;i++)
        fscanf(f,"%lld",&a[i]);
    l[n]=1;
    for(i=n-1;i>=1;i--)
    {
        maxim=0;
        for(j=i+1;j<=n;j++)
            if(a[i]<a[j]&&l[j]>maxim)
            {maxim=l[j];
            p=j;
            }
            b[p]=1;
        l[i]=maxim+1;
    }
    for(i=n;i>=1;i--)
        if(b[i]==0)
    {p=i;break;}fprintf(g,"%ld\n",l[p]);
    maximfinal=l[p];
    for(i=p;i<=n;i++)
    {
        if(l[i]==maximfinal)
            {fprintf(g,"%ld ",i);
        maximfinal--;}
    }

}