#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn=3e5+5;
const int B = 31;
int n,x,sz = 1;
int dp[maxn * B];
int to[maxn * B][2];
void add(int v,int idx){
int now = 1;
dp[1] = min(dp[1],idx);
for(int i = B-1;i >= 0;i--){
int xx = (v >> i) & 1;
if(!to[now][xx]) to[now][xx] = ++sz;
dp[to[now][xx]] = min(dp[to[now][xx]],idx);
now = to[now][xx];
}
}
int tap(int v){
int now = 1;
int cp = 1e9;
bool tr = 1;
for(int i = B-1;i >= 0;i--){
int a = (v >> i) & 1;
int b = (x >> i) & 1;
if(!b and to[now][a ^ 1]) cp = min(cp,dp[to[now][a^1]]);
if(to[now][a ^ b]) now = to[now][a^b];
else {
tr = 0;
break;
}
}
if(tr) cp = min(cp,dp[now]);
return cp;
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> x;
for(int i = 1;i <= n * B;i++) dp[i] = 1e9;
int nw = 0;
int ans = 0;
int ii = -1,k = -1;
add(0,0);
for(int i = 1;i <= n;i++){
int a; cin >> a;
nw ^= a;
int ind = tap(nw);
if(ans < i - ind){
ii = ind + 1;
k = i + 1 - ii;
}
add(nw,i);
}
cout<<ii<<' '<<k;
}
