using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;

class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        int itemCount = int.Parse(Reader.ReadLine());
        this.sushi = Reader.GetInt();
        List<int> ans = this.GetAns(0);
        ans.Sort();
        Console.WriteLine(ans.Sum(a=>this.sushi[a]));
        ans = new List<int>(ans.Select(a=>a+1));
        Console.WriteLine(string.Join(" ", ans));
        

        


    }
    
    private int[] sushi ;
    
    Dictionary<int, List<int>> dic = new Dictionary<int, List<int>>();
    public List<int> GetAns(int idx) {
        if(dic.ContainsKey(idx)) {
            return dic[idx];
        }
        
        List<int> ans = new List<int>();
        int max = 0;
        if(idx >= this.sushi.Length) {
            
        } else if(idx == this.sushi.Length - 1) {
            ans.Add(idx);
        } else
        {
            List<int> tmp = new List<int>(this.GetAns(idx + 2));
            tmp.Add(idx);
            int total = tmp.Sum(a=>this.sushi[a]);
            if(total > max) {
                max = total;
                ans = tmp;
            }
            tmp = new List<int>(this.GetAns(idx + 1));
            total = tmp.Sum(a=>this.sushi[a]);
            if(total > max) {
                max = total;
                ans = tmp;
            }
        }
        this.dic.Add(idx, ans);
        return ans;
    }
    
    
    

    

    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"

7
1 2 9 10 1 1 4
ı


 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        public static int[] GetInt(char delimiter = ' ', bool trim = false)
        {
            string inptStr = ReadLine();
            if (trim)
            {
                inptStr = inptStr.Trim();
            }
            string[] inpt = inptStr.Split(delimiter);
            int[] ret = new int[inpt.Length];
            for (int i = 0; i < inpt.Length; i++)
            {
                ret[i] = int.Parse(inpt[i]);
            }
            return ret;
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}