#include <iostream>
#include <vector> 
#define rep(i,n) for(i=0;i<n;i++)
using namespace std;
struct h{
  vector<int> o; // order
  int v; // value
};
int main(void)
{
  int i,j,k,l;
  int n;
  h f[4];
  int v,e;
  cin >> n;
  rep(i,4) {
    f[i].v = 0;
  }
  for(i=1;i<n+1;i++) {
    int g;
    cin >> v;
    e = 1; g = f[1].v;
    rep(j,2) {
      if(g < f[j+2].v + v) {
        g = f[j+2].v + v;
        e = j+2;
      }
    }
    f[0].v = g;
    f[0].o = f[e].o;
    if(e != 1) f[0].o.push_back(i);
    rep(j,3) {
      f[3-j] = f[3-j-1];
    }
  }
  e = 1;
  if(f[1].v < f[2].v) e = 2;
  cout << f[e].v <<endl;
  cout << f[e].o[0];
  for(i=1;i<f[e].o.size();i++) {
    cout << " " << f[e].o[i];
  }
  puts("");
}