#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define ll long long
#define mp(x, y) make_pair(x, y)
#define sz(v) ((int) (v).size())
#define all(v) (v).begin(), (v).end()
#define MASK(i) (1LL << (i))
#define BIT(x, y) (((x) >> (y)) & 1)
#define pb push_back
#define heap priority_queue
#define max_rng *max_element
#define min_rng *min_element
#define rep(i, n) for(int i = 1, _n = (n); i <= _n; ++i)
#define forn(i, a, b) for(int i = (a), _b = (b); i <= _b; ++i)
#define ford(i, a, b) for(int i = (a), _b = (b); i >= _b; --i)
template <class X, class Y>
inline bool maximize(X &x, Y y) {
return (x < y ? x = y, true : false);
}
template <class X, class Y>
inline bool minimize(X &x, Y y) {
return (x > y ? x = y, true : false);
}
template <class X>
inline void compress(vector<X> &a) {
sort(all(a));
a.resize(unique(all(a)) - a.begin());
}
int ctz(ll x) { return __builtin_ctzll(x); }
int lg(ll x) { return 63 - __builtin_clzll(x); }
int popcount(ll x) { return __builtin_popcount(x); }
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rand(ll l, ll r) {
return l + abs((ll) rng()) % (r - l + 1);
}
const ll oo = (ll) 1e18 + 5;
const int inf = (ll) 1e9 + 7, mod = (ll) 1e9 + 7;
const int N = 3e5 + 5, LOG = 30;
void add(int &x, int y) { x += y; if (x >= mod) x -= mod; }
void sub(int &x, int y) { x -= y; if (x < 0) x += mod; }
int n, x;
int a[N], pf[N];
struct triee {
struct node {
int min_index;
int childs[2];
node() {
min_index = inf;
forn(i, 0, 1) childs[i] = -1;
}
};
vector<node> tree;
triee() { create(); }
void create() { tree.pb(node()); }
void addInt(int num, int index) {
int p = 0;
ford(i, LOG, 0) {
int bit = BIT(num, i);
if (tree[p].childs[bit] == -1) {
create();
tree[p].childs[bit] = sz(tree) - 1;
}
p = tree[p].childs[bit];
minimize(tree[p].min_index, index);
}
return;
}
int figure(int p, int h, int value) {
if (h == -1) return inf;
int bit = BIT(value, h);
int lc = tree[p].childs[bit ^ 0];
int rc = tree[p].childs[bit ^ 1];
// cout << p << ' ' << h << ' ' << value << ' ' << lc << ' ' << rc << " \n";
int ans = inf;
if (rc != -1 && MASK(h) >= x) {
minimize(ans, tree[rc].min_index);
}
if (lc != -1) minimize(ans, figure(lc, h - 1, value));
return ans;
}
};
int main(void) {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n >> x;
rep(i, n) cin >> a[i];
rep(i, n) pf[i] = pf[i-1] ^ a[i];
triee trie;
trie.addInt(0, 0);
// cout << (pf[8]) << '\n';
int pos = -1, len = -1;
rep(i, n) {
int pre = trie.figure(0, LOG, pf[i]);
// cout << i << ' ' << pre << '\n';
if (maximize(len, i - pre)) pos = pre + 1;
trie.addInt(pf[i], i);
// cout << "\n\n";
}
cout << pos << ' ' << len;
return 0;
}
