#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) trie[nod=(nod<<1)+c[j]]=i;
    }
    fout<<sol<<" "<<st<<" "<<en<<"\n";
    return 0;
}