#include <fstream>
using namespace std;

#define int long long

int n,s[100005],trie[4200000];
char ch[21];

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

signed main(){
    int i,j,nod,rasp=-1,st=0,dr=0;
    cin>>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++){
        cin>>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){
            rasp=s[i]^s[j];
            st=j+1;
            dr=i;
        }
        nod=1;
        for(j=0;j<21;j++){
            nod=nod*2+c[j];
            trie[nod]=i;
        }
    }
    cout<<rasp<<" "<<st<<" "<<dr<<"\n";
    return 0;
}