#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using namespace std;
#define rep(i,n) for(int i=0;i<(n);i++)
#define Inf 1000000001



int main(){
	
	int n;
	cin>>n;
	vector<int> v(n);
	rep(i,n)cin>>v[i];
	
	vector<pair<int,int>> dp(n+2,make_pair(-Inf,-1));
	dp[0] = make_pair(0,-1);
	rep(i,n){
		dp[i+1] = max(dp[i+1],dp[i]);
		dp[i+2] = max(dp[i+2],make_pair(dp[i].first+v[i],i));
	}
	
	auto ans = max(dp[n],dp[n+1]);
	
	cout<<ans.first<<endl;
	vector<int> t;
	int cur = ans.second;
	while(cur!=-1){
		t.push_back(cur);
		cur = dp[cur].second;
	}
	reverse(t.begin(),t.end());
	rep(i,t.size()){
		if(i!=0)cout<<' ';
		cout<<t[i]+1;
	}
	cout<<endl;
	
	return 0;
}