#include <iostream>
#include <fstream>

using namespace std;

const int MAXN = 100005;

int v[MAXN];
int N;

int main()
{
    ifstream in ("xormax.in");
    ofstream out ("xormax.out");
    in>>N;
    int maxim = 0, curr, st, dr;
    for (int i = 0; i <= N; ++i)
        in>>v[i];

    for (int i = 0; i < N; ++i)
        for(int j = i + 1; j <= N; ++j)
        {
            curr = 0;
            for(int k = i; k <= j; ++k)
                curr = curr ^ v[k];
            if(curr > maxim)
            {
                maxim = curr;
                st = i;
                dr = j;
            }
        }
    out<<maxim<<" "<<st + 1<<" "<<dr + 1;
}