#include <bits/stdc++.h>
#define Nmax 5002
using namespace std;
ifstream fin("subsir2.in");
ofstream fout("subsir2.out");
int N;
int dp[Nmax], a[Nmax], T[Nmax];
int i, j;
int pos;
int stop;
void display(int pos)
{
    if(T[pos])
        display(T[pos]);
    fout << pos << " ";
}
int main()
{
    fin >> N;
    dp[0] = Nmax;
    for(i = 1; i <= N; i++)
    {
        fin >> a[i];
        int mx = -1000000004;
        for(j = i - 1, pos = 0; j >= 1; j--)
            if(a[i] >= a[j])
                if(mx < a[j])
                {
                    mx = a[j];
                    if(dp[j] < dp[pos] || (dp[j] == dp[pos] && a[j] < a[pos]))
                        pos = j;
                }
        if(pos == 0)
            dp[i] = 1, T[i] = 0;
        else dp[i] = 1 + dp[pos], T[i] = pos;
    }
    int mx = a[N];
    int stop = N;
    for(i = N - 1; i >= 1; i--)
    {
        if(mx < a[i])
        {
            mx = a[i];
            if(dp[stop] > dp[i])
                stop = i;
        }
    }
    fout << dp[stop] << "\n";
    display(stop);
    fout << "\n";
    return 0;
}