#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<numeric>
#include<cmath>
#include<utility>
#include<tuple>
#include<cstdint>
#include<cstdio>
#include<iomanip>
#include<map>
#include<queue>
#include<set>
#include<stack>
#include<deque>
#include<unordered_map>
#include<unordered_set>
#include<bitset>
#include<cctype>
#include<chrono>
#include<random>
#include<cassert>
#include<cstddef>
#include<iterator>
#include<string_view>
#include<type_traits>

#ifdef LOCAL
#  include "debug_print.hpp"
#  define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define debug(...) (static_cast<void>(0))
#endif

using namespace std;
#define rep(i,n) for(int i=0; i<(n); i++)
#define rrep(i,n) for(int i=(n)-1; i>=0; i--)
#define FOR(i,a,b) for(int i=(a); i<(b); i++)
#define RFOR(i,a,b) for(int i=(b-1); i>=(a); i--)
#define ALL(v) v.begin(), v.end()
#define RALL(v) v.rbegin(), v.rend()
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() );
#define pb push_back
using ll = long long;
using D = double;
using LD = long double;
using P = pair<int, int>;
template<typename T> using PQ = priority_queue<T,vector<T>>;
template<typename T> using minPQ = priority_queue<T, vector<T>, greater<T>>;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
void yesno(bool flag) {cout << (flag?"Yes":"No") << "\n";}

template<typename T, typename U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
    os << p.first << " " << p.second;
    return os;
}
template<typename T, typename U>
istream &operator>>(istream &is, pair<T, U> &p) {
    is >> p.first >> p.second;
    return is;
}

template<typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
    int s = (int)v.size();
    for (int i = 0; i < s; i++) os << (i ? " " : "") << v[i];
    return os;
}
template<typename T>
istream &operator>>(istream &is, vector<T> &v) {
    for (auto &x : v) is >> x;
    return is;
}
void in() {}
template<typename T, class... U>
void in(T &t, U &...u) {
    cin >> t;
    in(u...);
}
void out() { cout << "\n"; }
template<typename T, class... U, char sep = ' '>
void out(const T &t, const U &...u) {
    cout << t;
    if (sizeof...(u)) cout << sep;
    out(u...);
}
void outr() {}
template<typename T, class... U, char sep = ' '>
void outr(const T &t, const U &...u) {
    cout << t;
    outr(u...);
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n; ll left,right; in(n,left,right);
    if(n == 1){
        out(right-left+1);
        return 0;
    }
    vector<ll> a(n); in(a);
    auto get = [&](ll x, int d) -> int{
        return (x >> d) & 1;
    };

    vector<int> v(61);
    stack<P> seg;
    seg.push({0,n-1});
    rrep(d,61){
        stack<P> nex;
        int status = 0;
        while(seg.size()){
            auto [l,r] = seg.top(); seg.pop();
            int inv_cnt = 0;
            int inv_idx = -1;
            FOR(i,l,r){
                if(get(a[i], d) != get(a[i+1], d)){
                    if(inv_cnt == 1){
                        out(0);
                        return 0;
                    }
                    else{
                        inv_cnt = 1;
                        inv_idx = i;
                    }
                }
            }
            if(inv_idx == -1){
                nex.push({l,r});
            }
            else{
                int newr = inv_idx;
                int newl = inv_idx+1;
                if(l < newr){
                    nex.push({l,newr});
                }
                if(newl < r){
                    nex.push({newl, r});
                }
                if(get(a[inv_idx],d) == 1){
                    status |= 2;
                }
                else{
                    status |= 1;
                }
            }
        }
        if((status & 3) == 3){
            out(0);
            return 0;
        }
        if(status == 0){
            v[d] = -1;
        }
        if(status == 1){
            v[d] = 0;
        }
        if(status == 2){
            v[d] = 1;
        }
        swap(seg,nex);
    }
    if(seg.size()){
        out(0);
        return 0;
    }

    auto solve = [&](ll x) -> ll{
        if(x < 0) return 0;
        ll dp[62][2];
        rep(i,62)rep(j,2) dp[i][j] = 0;
        dp[61][0] = 1;
        rrep(d,61){
            if(get(x,d)){
                if(v[d] == 1){
                    dp[d][0] += dp[d+1][0];
                    dp[d][1] += dp[d+1][1];
                }
                else if(v[d] == 0){
                    dp[d][1] += dp[d+1][0] + dp[d+1][1];
                }
                else{
                    dp[d][0] += dp[d+1][0];
                    dp[d][1] += dp[d+1][0] + dp[d+1][1] * 2;
                }
            }
            else{
                if(v[d] == 1){
                    dp[d][1] += dp[d+1][1];
                }
                else if(v[d] == 0){
                    dp[d][0] += dp[d+1][0];
                    dp[d][1] += dp[d+1][1];
                }
                else{
                    dp[d][0] += dp[d+1][0];
                    dp[d][1] += dp[d+1][1] * 2;
                }
            }
        }
        return dp[0][0] + dp[0][1];
    };

    out(solve(right) - solve(left-1));
}