#include <iostream>
#include <vector> 
#define rep(i,n) for(i=0;i<n;i++)
using namespace std;
class past_memory{
public: 
  vector<int> o; // order
  int v; // value
};
int main(void)
{
  int i,j,k,l;
  int n;
  past_memory past[4];
  cin >> n;
  rep(i,4) {
    past[i].v = 0;
  }
  for(i=1;i<n+1;i++) {
    int v;
    int e;
    int maxV;
    cin >> v;
    e = 1;
    maxV = past[1].v;
    rep(j,2) {
      if(maxV < past[j+2].v + v) {
        maxV = past[j+2].v + v;
        e = j+2;
      }
    }
    past[0].v = maxV;
    past[0].o = past[e].o;
    if(e != 1) past[0].o.push_back(i);

    rep(j,3) {
      past[3-j] = past[3-j-1];
    }
  }
  int e = 1;
  if(past[1].v < past[2].v) e = 2;
  cout << past[e].v << endl;
  printf("%d",past[e].o[0]);
  for(i=1;i<past[e].o.size();i++) {
    printf(" %d",past[e].o[i]);
  }
  puts("");
  return 0;
}