#include <bits/stdc++.h>

#define NMAX 5005
using namespace std;

ifstream fin("subsir2.in");
ofstream fout("subsir2.out");

int dp[NMAX], p[NMAX], v[NMAX], b[NMAX];

int main()
{
    int n;
    fin >> n;

    for(int i = 1; i <= n; ++i){
        fin >> v[i];
        dp[i] = (1 << 30);
    }

    for(int i = n; i >= 1; --i){
        int val = (1 << 30);
        for(int j = i + 1; j <= n; ++j){
            if(v[i] <= v[j]){
                b[j] = 1;

                if(v[j] < val){
                    if(dp[i] >= dp[j] + 1){
                        dp[i] = dp[j] + 1;
                        p[i] = j;
                    }
                    val = v[j];
                }
            }
        }
        if(dp[i] > n)
            dp[i] = 1;
    }

    int rez = 0;
    dp[0] = (1 << 30);
    for(int i = 1; i <= n; ++i)
        if(b[i] == 0 && (dp[rez] > dp[i] || (dp[rez] == dp[i] && v[rez] > v[i])))
            rez = i;

    fout << dp[rez] << '\n';
    for(; rez != 0; rez = p[rez])
        fout << rez << ' ';
    return 0;
}