#include <fstream>
#include <vector>
#include <unordered_map>
#define fr first
#define sc second

using namespace std;

ifstream in("xormax.in");
ofstream out("xormax.out");

const int NRB=20;
int n;
unordered_map<int, int> poz;
vector<pair<int, int>> tr;

void add_node(int i, int val)
{
    int u=0;
    for(int b=NRB;b>=0;b--)
        if((val&(1<<b))==0)
        {
            if(tr[u].fr==-1)
            {
                tr[u].fr=tr.size();
                tr.push_back({-1, -1});
            }
            u=tr[u].fr;
        }
        else
        {
            if(tr[u].sc==-1)
            {
                tr[u].sc=tr.size();
                tr.push_back({-1, -1});
            }
            u=tr[u].sc;
        }
    poz[u]=i;
}

pair<int, int> find_max(int val)
{
    int u=0, v, ans=0;
    for(int b=NRB;b>=0;b--)
    {
        v=u;
        if((val&(1<<b))==0)
            u=(tr[u].sc==-1)?tr[u].fr:tr[u].sc;
        else
            u=(tr[u].fr==-1)?tr[u].sc:tr[u].fr;
        if(u==tr[v].sc)
            ans^=(1<<b);
    }
    return {ans, poz[u]};
}

int main()
{
    tr.push_back({-1, -1});
    in>>n;
    int xr=0, v, ans=-1, ansi=-1, ansj=-1;
    for(int i=1;i<=n;i++)
    {
        add_node(i, xr);
        in>>v; xr^=v;
        auto pans=find_max(xr);
        if((pans.fr^xr)>ans)
        {
            ans=pans.fr^xr;
            ansi=i;
            ansj=pans.sc;
        }
    }
    out<<ans<<" "<<ansj<<" "<<ansi;
    return 0;
}