#include <bits/stdc++.h>
#define NMAX 1005

using namespace std;

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

int n;
int a[NMAX] , b[NMAX];

int main()
{
    int i , j , maxi = 0 , lgmax = 0 , poz = 0;
    f >> n;
    for(i=1;i<=n;i++)
        f >> a[i];
    b[n] = 1;
    for(i=n-1;i>=1;i--)
    {
        maxi = 0;
        for(j=i+1;j<=n;j++)
        if(a[i] <= a[j] && b[j] > maxi)
            maxi = b[j];
        b[i] = maxi + 1;
        if(lgmax <= b[i])
        {
            lgmax = b[i];
            poz = i;
        }
    }
    g << lgmax << '\n';
    for(i=poz;i<=n;i++)
    {
        if(b[i] == lgmax)
        {
            g << i << ' ';
            lgmax--;
        }
    }
    return 0;
}