#include <fstream>
using namespace std;
int n,s[100005],trie[1<<22],sol=-1,st,en;
char c[21];
ifstream fin("xormax.in");
ofstream fout("xormax.out");
int main()
{
    int i,j,nod;
    fin>>n;
    for(i=2;i<1<<22;++i)
      trie[i]=-1;
    for(i=1;i<22;++i)
      trie[1<<i]=0;
    for(i=1;i<=n;++i)
    {
        fin>>s[i];
        s[i]^=s[i-1];
        for(j=0;j<21;++j)
          c[j]=(bool)(s[i]&(1<<(20-j)));
        nod=1;
        for(j=0;j<21;++j)
        {
            if(trie[(nod<<1)+!c[j]]>0)
              nod=(nod<<1)+!c[j];
            else
              nod=(nod<<1)+c[j];
        }
        j=trie[nod];
        if((s[i]^s[j])>sol)
        {
            sol=s[i]^s[j];
            st=j+1;
            en=i;
        }
        nod=1;
        for(j=0;j<21;++j)
        {
            nod=(nod<<1)+c[j];
            trie[nod]=i;
        }
    }
    fout<<sol<<" "<<st<<" "<<en<<"\n";
    return 0;
}