#include <stdio.h>
#include <string.h>
#define Max ((1<<21)-1)
#define Dim 4000
#define pow(x) ((unsigned)1<<(x))
#define am(x) (ok[(x)/32] & pow((x)&31))
#define set(x) ok[x/32] |= pow(x&31)
#define cit(x) x=0; while (lin[poz]>='0'){x=10*x+lin[poz++]-'0';     \
        if (poz==Dim) fread(lin, 1, Dim, stdin), poz=0; }            \
        poz++; if (poz==Dim) fread(lin, 1, Dim, stdin), poz=0; 

int n, a[100100];
unsigned ok[1<<16];
char bun[1<<21];

int main()
{
    freopen("xormax.in", "r", stdin);
    freopen("xormax.out", "w", stdout);
    scanf("%d\n", &n); n++;
    char lin[Dim+10];
    fread(lin, 1, Dim, stdin);
    int i, j, poz=0, pow=0;
    ok[0]=1;
    for (i=1; i<n; set(a[i]), ++i){
        cit(j); a[i]=a[i-1]^j;
        pow |= a[i];
        if (am(Max-a[i]))
           for (j=i-1; j>=0; j--)
               if ((a[j]^a[i])==Max){
                  printf("%d %d %d\n", Max, j+1, i);
                  return 0;
               }
    }
    bun[0]=1;
    for (i=0; i<n; bun[a[i]]=1, ++i)
        if (bun[pow-a[i]])
           for (j=i-1; j>=0; j--)
               if ((a[j]^a[i])==pow){
                  printf("%d %d %d\n", pow, j+1, i);
                  return 0;
               }
    int best=-1, p=0, u=0;
    memset(bun, 0, pow+1); bun[0]=1;
    #define LIM 130
    for (i=1; i<n; i++){
        bool ok = 0;
        for (j=(pow-a[i])+LIM; j>(pow-a[i])-LIM && j>=0; j--)
            if (bun[j] && a[i]^j>best)
               ok = 1;
        if (!ok) continue;
        for (j=i-1; j>=0; j--)
            if ((a[j]^a[i]) > best) best=(a[j]^a[i]), p=j, u=i;
    }
    printf("%d %d %d\n", best, p+1, u);
    return 0;
}