#include <stdio.h>
#include <stdlib.h>

int main()
{
    freopen("xormax.in", "r", stdin);
    //freopen("xormax.out", "w", stdout);
    unsigned long int n, i, j, *ma, *also, *felso, *cs, maxi = 0, start, endd, h;
    scanf("%d", &n);
    ma = (unsigned long int*) malloc (n* sizeof(unsigned long int));
    for(i = 0; i < n; ++i)
    {
        scanf("%lu", ma+i);
    }
    if(n == 1)
    {
        printf("%lu %lu %lu", ma[0], 1,1);
        return 0;
    }
    felso = (unsigned long int*) malloc (n * sizeof(unsigned long int));
    also = (unsigned long int*) malloc (n * sizeof(unsigned long int));
    felso[0] = ma[0] ^ ma[1];
    for(i = 1; i < n - 1; ++i)
    {
        also[0] = felso[0] ^ ma[i + 1];
        if(also[0] > maxi)
        {
            maxi = also[0];
            start = i;
            endd = i+1;
        }
        //printf("%d ", also[0]);
        for(j = 1; j < i; ++j)
        {
            also[j] = also[ j-1 ] ^ ma[j + 1];
            if(also[j] >= maxi && (also[j] > maxi || endd > i+2 || endd - start > j + i + 3) )
            {
                maxi = also[j];
                start = j+1;
                endd = i+2;
            }
           // printf("%d ", also[j]);
        }
        //printf("\n");
        cs = felso;
        felso = also;
        also = cs;
    }
    printf("%lu %lu %lu", maxi, start, endd);
    return 0;
}