#include <fstream>
#include <cstring>

using namespace std;

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

int n,i,j,v[100001],trie[1<<22],pos,fsb[25],st=1,dr=1,rasp;

int main()
{
    f>>n;
    for(i=1;i<=n;++i)
    {
        f >> v[i];
        v[i] ^= v[i-1];
        for(j=20;j>=0;--j)
            fsb[20-j]=v[i]&(1<<j)?1:0;
        pos = 1;
        for(j=0;j<=20;++j)
        {
            pos = pos<<1;
            if(trie[pos|!fsb[j]])
                pos = pos | !fsb[j];
            else pos = pos | fsb[j];
        }
        if ((v[trie[pos]] ^ v[i]) > rasp)
        {
            rasp = v[trie[pos]] ^ v[i];
            st = trie[pos] + 1;
            dr = i;
        }
        pos = 1;
        for(j=0;j<=20;++j)
        {
            pos = (pos<<1) | fsb[j];
            trie[pos] = i;
        }
    }

    g<<rasp << " " << st << " " << dr;

    return 0;
}