#include <bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (int)n; i++)
using namespace std;
using ll = long long;

int n;
vector<bitset<61>> a;

vector<int> solve(int l, int r, int d) {
    vector<int> ret(61, -1);
    int idx = -1, c = 0;
    for(int i = l + 1; i < r; i++) {
        if(a[i][d] != a[i - 1][d]) {
            c++;
            idx = i;
        }
    }
    if(c > 1) {
        return ret;
    } else if(c == 1) {
        ret[d] = a[l][d];
        if(d == 0) return ret;
        vector<int> v1 = solve(l, idx, d - 1);
        vector<int> v2 = solve(idx, r, d - 1);
        if(v1[0] == -1 || v2[0] == -1) {
            ret[d] = -1;
            return ret;
        }
        for(int i = 0; i < d; i++) {
            if(v1[i] == 2) ret[i] = v2[i];
            else if(v2[i] == 2) ret[i] = v1[i];
            else {
                if(v1[i] != v2[i]) {
                    ret.assign(61, -1);
                    return ret;
                } else ret[i] = v1[i];
            }
        }
    } else {
        ret[d] = 2;
        if(d == 0) return ret;
        vector<int> v = solve(l, r, d - 1);
        if(v[0] == -1) {
            ret[d] = -1;
            return ret;
        }
        for(int i = 0; i < d; i++) ret[i] = v[i];
    }
    return ret;
}

ll calc(vector<int> vec, bitset<61> bs) {
    ll c0 = 1, c1 = 0;
    for(int i = 60; i >= 0; i--) {
        ll nc0 = c0, nc1 = c1;
        if(vec[i] == -1) return 0;
        else if(vec[i] == 0) {
            if(bs[i] == 1) {
                nc0 = 0;
                nc1 = c0 + c1;
            } else {
                nc0 = c0;
                nc1 = c1;
            }
        } else if(vec[i] == 1) {
            if(bs[i] == 1) {
                nc0 = c0;
                nc1 = c1;
            } else {
                nc0 = 0;
                nc1 = c1;
            }
        } else {
            if(bs[i] == 1) {
                nc0 = c0;
                nc1 = c0 + 2 * c1;
            } else {
                nc0 = c0;
                nc1 = 2 * c1;
            }
        }
        c0 = nc0;
        c1 = nc1;
    }
    return c0 + c1;
}

ll solve(ll v) {
    vector<int> vec = solve(0, n, 60);
    bitset<61> bs(v);
    ll ans = calc(vec, bs);
    return ans;
}

int main() {
    ll l, r;
    cin >> n >> l >> r;
    a.resize(n);
    rep(i, n) {
        ll tmp;
        cin >> tmp;
        a[i] = bitset<61>(tmp);
    }
    if(l) cout << solve(r) - solve(l - 1) << endl;
    else cout << solve(r) << endl;
    return 0;
}