#include<fstream>
#include<vector>
 
using namespace std;
 
ifstream in("xormax.in");
ofstream out("xormax.out");
 
int main()
{
    size_t n,x,i,j,max=0,start,stop;
    vector<size_t> v;
    v.push_back(0);
    in>>n;
    for(i=1;i<=n;i++)
    {
        in>>x;
        v.push_back(v[v.size()-1]^x);
        if(v[i]>max)
        {
            max=v[i];
            start=1;
            stop=i+1;
        }
    }
    for(i=2;i<=n;i++)
        for (j=1;j<i;j++)
        {
            x=v[i]^v[j];
            if (x>max)
            {
                max=x;
                start=j+1;
                stop=i;
            }
            else
                if (x==max)
                {
                    if(stop>i)
                    {
                        stop=i;
                        start=j+1;
                    }
                    else
                        if(stop==i&&start<j+1)
                        {
                            start=j+1;
                        }
                }
        }
    out<<max<<' '<<start<<' '<<stop;
}