#include <iostream>
#include <fstream>

using namespace std;

int n, x[100001], xmax, start, stop;

int main()
    {
    ifstream f("xormax.in");
    ofstream g("xormax.out");
    int a;
    f>>n;
    for(int i = 1; i <= n; i++)
        {
        f >> a;
        x[i] = x[i - 1] ^ a;
        }
    xmax=x[1];
    start=1;
    stop=1;
    for(int k = 2; k <= n; k++)
        {
        for(int p = k-1; p >=0; p--)
            if((x[k]^x[p]) > xmax)
            {
            xmax = x[k]^x[p];
            start = p+1;
            stop = k;
            }
        }
    g<<xmax<<' '<<start<<' '<<stop;
    f.close();
    g.close();
    return 0;
    }