#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
#define mp make_pair
#define CHECK(x) if(!(x)) return false;
#define CHECKRET(x, y) if(!(x)) return (y);
#define SKIP(x) if((x)) continue;
typedef pair<int, int> pii;

#ifdef INFOARENA
#define ProblemName "xormax"
#else
#define ProblemName "fis"
#endif

#define InFile ProblemName ".in"
#define OuFile ProblemName ".out"

const int MAXBUF = 30000000;
char parseBuf[MAXBUF];
char *head;
bool isDigit[255];

void parseInit() {
  int a = fread(parseBuf, 1, MAXBUF, stdin);
  parseBuf[a] = 0;
  head = parseBuf;
  memset(isDigit, 0, sizeof isDigit);
  for (int i = '0'; i <= '9'; ++i)
    isDigit[i] = true;
}

int nextInt() {
  int ans = 0;
  for (; !isDigit[*head]; ++head);
  for (; isDigit[*head]; ++head)
    ans = ans * 10 + (*head) - '0';
  return ans;
}

const int MAXN = 100010;
const int MAXBITS = 21;
int N;

int solx = -1, sols = -1, solstop = -1;

int auxx, auxs;

struct trie {
  trie *nxt[2];
  int stp;
  void insert(int x, int bit, int stop);
  void querymax(int with, int bit, int fin);
} phys[MAXN * MAXBITS / 3];
int nxtNode = 0;

void trie::insert(int x, int bit, int stop) {
  trie *t = this;
  for (; bit >= 0; --bit) {
    int tar = (x & (1 << bit)) ? 1 : 0;
    if (t->nxt[tar] == NULL) t->nxt[tar] = &phys[nxtNode++];
    t = t->nxt[tar];
  }
  t->stp = stop;
}

void trie::querymax(int with, int bit, int fin) {
  trie *t = this;
  for (; bit >= 0; --bit) {
    int tar = (t->nxt[0] == NULL) ? 1 :
      ((t->nxt[1] == NULL) ? 0 : ((with & (1 << bit)) ? 0 : 1));
    auxx += (tar << bit);
    t = t->nxt[tar];
  }
  auxs = t->stp + 1;
}

int main() {
  assert(freopen(InFile, "r", stdin));
  assert(freopen(OuFile, "w", stdout));
  parseInit();
  trie *T = &phys[nxtNode++];
  N = nextInt();
  T->insert(0, MAXBITS - 1, -1);
  int pref = 0;
  for (int i = 0; i < N; ++i) {
    int x = nextInt();
    pref ^= x;
    auxx = 0;
    T->querymax(pref, MAXBITS - 1, i);
    T->insert(pref, MAXBITS - 1, i);
    auxx ^= pref;
    SKIP(auxx <= solx);
    solx = auxx, sols = auxs, solstop = i;
  }
  printf("%d %d %d\n", solx, sols + 1, solstop + 1);

  return 0;
}