#include "bits/stdc++.h"
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a) for(int i=0;i<a;i++)
#define printall(n,array) {for(int i=0;i<n;i++){cout<<array[i]<<" ";}cout<<endl;}
#define U() cout<<endl;
typedef long long ll;
typedef pair<int, int> PI;
typedef pair<int, PI> V;
typedef vector<int> VE;
const ll mod = 1000000007; //10^9+7

int n;
int v[1002];
int dp[1002][2];
VE ve;

void restore(int t,int rest){
  if(t<0||rest<0)return ;
  //print("push "<<t);///
  ve.push_back(t);
  //print("rest "<<rest);///
  if(dp[t-1][1]==rest){
    //print("get1 "<<t-1);///
    rest-=v[t-1];
    restore(t-1,rest);
  }else if(dp[t-2][1]==rest){
    //print("get2 "<<t-2);///
    rest-=v[t-2];
    restore(t-2,rest);
  }else{
    //print("get3 "<<t-3);///
    rest-=v[t-3];
    restore(t-3,rest);
  }
}

int main(){
  cin>>n;
  REP(i,n)cin>>v[i];
  ////printall(n,v);///
  dp[0][0]=0;
  dp[0][1]=v[0];
  dp[1][0]=v[0];
  dp[1][1]=v[1];
  ////REP(i,n){REP(j,2)cout<<dp[i][j];cout<<endl;}///
  rep(i,2,n){
    dp[i][0]=dp[i-1][1];
    dp[i][1]=max(dp[i-2][1],dp[i-3][1])+v[i];
  }
  //REP(i,n){REP(j,2)cout<<dp[i][j];cout<<endl;}///
  int ans=max(dp[n-1][0],dp[n-1][1]);
  print(ans);
  if(dp[n-1][0]<=dp[n-1][1]){
    //print("start1 "<<n-1);///
    restore(n-1,ans-v[n-1]);
  }else{
    //print("start2 "<<n-2);///
    restore(n-2,ans-v[n-2]);
  }
  reverse(ve.begin(),ve.end());
  REP(i,ve.size())cout<<ve[i]+1<<" ";
  U();
}