#include<bits/stdc++.h>
using namespace std;
#define fs first
#define sc second
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define ALL(A) A.begin(),A.end()
#define RALL(A) A.rbegin(),A.rend()
typedef long long LL;
typedef pair<LL,LL> P;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<typename T> T gcd(T a,T b){return b?gcd(b,a%b):a;}
const LL mod=1000000007;
const LL LINF=1LL<<60;
const int INF=1<<30;
int dx[]={1,0,-1,0,1,-1,1,-1};
int dy[]={0,1,0,-1,1,-1,-1,1};

vector<int> v(64,0);

void rec(int k,vector<LL> a){
    if(k < 0) return;
    int n = a.size();
    if(n == 1) return;
    int cnt = 0;
    for (int i = 0; i < n - 1; i++) {
        int t = a[i] >> k & 1, nt = a[i+1] >> k & 1;
        if(t != nt) cnt++;
    }
    if(cnt == 0){
        rec(k-1, a);
    }
    else if(cnt == 1){
        vector<LL> L,R;
        for (int i = 0; i < n; i++) {
            int t = a[i] >> k & 1;
            if(t == 0) L.pb(a[i]);
            else R.pb(a[i]);
        }
        if(a[0] >> k & 1) v[k] |= 2;
        else v[k] |= 1;
        rec(k-1, L);
        rec(k-1, R);
    }
    else{
        v[k] |= 3;
    }
    return ;
}

LL dp[64][2];

LL rec2(int k,LL s,bool f){
    if(k < 0) return 1;
    if(~dp[k][f]) return dp[k][f];
    int x = f ? s >> k & 1 : 1;
    LL ret = 0;
    if(v[k] == 0){
        for (int i = 0; i <= x; i++) {
            ret += rec2(k-1,s,f&(x == i));
        }
    }
    else if(v[k] == 1){
        ret += rec2(k-1,s,f&(x == 0));
    }
    else if(v[k] == 2){
        if(x == 0) return dp[k][f] = 0;
        ret += rec2(k-1,s,f&(x == 1));
    }
    else{
        return dp[k][f] = 0;
    }
    return dp[k][f] = ret;
}

int f(LL n){
    int ret = 0;
    while(n){
        n >>= 1;
        ret++;
    }
    return ret - 1;
}

int main(){
    LL n,l,r;cin >> n >> l >> r;
    l--;
    vector<LL> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    rec(63,a);
    LL ans = 0;
    auto solve = [](LL r){
        for (int i = f(r)+1; i <= 63; i++) {
            if(v[i]) return 0LL;
        }
        memset(dp,-1,sizeof(dp));
        return rec2(f(r), r, 1);
    };
    ans += solve(r);
    if(l >= 0){
        ans -= solve(l);
    }
    cout << ans << endl;
    return 0;
}