#include <fstream>

using namespace std;
ifstream f("xormax.in");
ofstream g("xormax.out");
int a[100001],sum[100001],sum1,MAX=0,n,i,j,in,stop;
int main()
{
    f>>n;
    for (i=1;i<=n;i++)
      f>>a[i];
     for (i=1;i<=n;i++)
      sum[i]=(sum[i-1]^a[i]);
     for (i=n-1;i>=1;i--){
     sum1=a[i];
     for (j=i+1;j<=n;j++){
      sum1=(sum1^a[j]);
      if (sum1>MAX) in=i,stop=j,MAX=sum1;
     }
     }
     g<<MAX<<' '<<in<<' '<<stop;
    return 0;
}