#include <fstream>
using namespace std;
int n,s[100005],trie[1<<22],sol=-1,st,en;
char c[21];
ifstream fin("xormax.in");
ofstream fout("xormax.out");
int main()
{
	int i,j,nod;
	fin>>n;
	for(i=2;i<1<<22;++i)
		trie[i]=-1;
	for(i=1;i<22;++i)
		trie[1<<i]=0;
	for(i=1;i<=n;++i)
	{
		fin>>s[i];
		s[i]^=s[i-1];
		for(j=0;j<21;++j)
			c[j]=(bool)(s[i]&(1<<(20-j)));
		nod=1;
		for(j=0;j<21;++j)
		{
			if(trie[(nod<<1)+!c[j]]>0)
				nod=(nod<<1)+!c[j];
			else
				nod=(nod<<1)+c[j];
		}
		j=trie[nod];
		if((s[i]^s[j])>sol)
		{
			sol=s[i]^s[j];
			st=j+1;
			en=i;
		}
		nod=1;
		for(j=0;j<21;++j)
			trie[nod=(nod<<1)+c[j]]=i;
	}
	fout<<sol<<" "<<st<<" "<<en<<"\n";
	return 0;
}