#include using namespace std; // #define int long long #define rep(i, n) for (long long i = (long long)(0); i < (long long)(n); ++i) #define reps(i, n) for (long long i = (long long)(1); i <= (long long)(n); ++i) #define rrep(i, n) for (long long i = ((long long)(n)-1); i >= 0; i--) #define rreps(i, n) for (long long i = ((long long)(n)); i > 0; i--) #define irep(i, m, n) for (long long i = (long long)(m); i < (long long)(n); ++i) #define ireps(i, m, n) for (long long i = (long long)(m); i <= (long long)(n); ++i) #define SORT(v, n) sort(v, v + n); #define REVERSE(v, n) reverse(v, v+n); #define vsort(v) sort(v.begin(), v.end()); #define all(v) v.begin(), v.end() #define mp(n, m) make_pair(n, m); #define cout(d) cout<; using vvi = vector; using vll = vector; using vvll = vector; using pii = pair; using pll = pair; using vs = vector; using vpll = vector>; using vtp = vector>; using vb = vector; template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } const ll INF = 1e9; const ll MOD = 1e9+7; const ll LINF = 1e18; signed main() { cin.tie( 0 ); ios::sync_with_stdio( false ); ll n,x; cin>>n>>x; vll a(n); rep(i,n) cin>>a[i]; map m; map w; set same; rep(i,n){ vll b(40); vll c(40); rep(j,40){ b[j]=(a[i]>>j)&1; if((a[i]>>j&1) == (x>>j&1)) c[j]=0; else c[j]=1; } m[b]++; w[c]++; if(b==c) same.insert(c); } ll ans=0, scnt=0; for(auto &e: w){ // for(auto f: e.first) cout<