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//Ilie Dmitru
#include<fstream>
#include<cstdio>
typedef long long int ll;
const int NMAX=100005;
const ll MOD=194767;
const int maxBIT=1<<20;
std::ifstream f("xormax.in");
std::ofstream g("xormax.out");
int trie[NMAX*21][2], trieCnt, triePos[NMAX*21];
void push(int x, int pos)
{
int i, val, index=0;
for(i=20;i>-1;--i)
{
val=(x>>i)&1;
if(!trie[index][val])
trie[index][val]=++trieCnt;
index=trie[index][val];
}
triePos[index]=pos;
}
int findMax(int x, int& startPos)
{
int i, val, res=0, index=0;
for(i=20;i>-1;--i)
{
val=!((x>>i)&1);
if(trie[index][val])
{
res|=1<<i;
index=trie[index][val];
}
else
index=trie[index][!val];
}
startPos=triePos[index];
return res;
}
char s[NMAX*8];
int v[NMAX];
int main()
{
int i, N, x=0, r, ans=0, pos, bestStart=-1, bestEnd=-1;
f>>N;
f.get();
f.getline(s, NMAX*8);
for(i=pos=0;s[i];++i)
{
if(s[i]!=' ')
x=x*10+s[i]-'0';
else
v[pos++]=x, x=0;
}
v[pos]=x;
push(0, -1);
x=0;
for(i=0;i<N;++i)
{
x^=v[i];
r=findMax(x, pos);
push(x, i);
if(r>ans)
{
ans=r;
bestStart=pos;
bestEnd=i;
}
}
g<<ans<<' '<<bestStart+2<<' '<<bestEnd+1;
f.close();
g.close();
return 0;
}