#include <iostream>
#include <vector>
#include <functional>

template <class It>
std::vector<std::pair<typename It::value_type, int>> runlength(
    It begin, It end) {
    using T = typename It::value_type;

    std::vector<std::pair<T, int>> res;
    while (begin != end) {
        const T& c = *(begin++);
        if (res.empty() || c != res.back().first) {
            res.emplace_back(c, 1);
        } else {
            ++res.back().second;
        }
    }

    return res;
}

constexpr int K = 61;

using lint = long long;

void solve() {
    int n;
    lint xl, xr;
    std::cin >> n >> xl >> xr;

    std::vector<lint> xs(n);
    for (auto& x : xs) std::cin >> x;

    std::vector<int> ts(K, 3);
    std::function<void(int, int, int)> dfs =
        [&](int l, int r, int k) -> void {
        if (k < 0) return;

        std::vector<int> bs;
        for (int i = l; i < r; ++i) {
            bs.push_back((xs[i] >> k) & 1);
        }
        auto ps = runlength(bs.begin(), bs.end());

        int t;
        if (ps.size() == 1) {
            t = 3;
        } else if (ps.size() == 2) {
            t = 1 << bs[0];
        } else {
            t = 0;
        }
        ts[k] &= t;

        if (ps.size() == 1) {
            dfs(l, r, k - 1);
        } else if (ps.size() == 2) {
            int m = l + ps.front().second;
            dfs(l, m, k - 1);
            dfs(m, r, k - 1);
        }
    };
    dfs(0, n, K - 1);

    auto calc = [&](lint m) -> lint {
        if (m < 0) return 0;

        std::vector<lint> dp(2, 1);
        auto ndp = dp;
        for (int k = 0; k < K; ++k) {
            std::fill(ndp.begin(), ndp.end(), 0);

            for (int d = 0; d < 2; ++d) {
                if (((ts[k] >> d) & 1) == 0) continue;

                ndp[0] += dp[0];
                if (d < ((m >> k) & 1)) ndp[1] += dp[0];
                if (d == ((m >> k) & 1)) ndp[1] += dp[1];
            }

            std::swap(dp, ndp);
        }
        return dp[1];
    };

    std::cout << calc(xr) - calc(xl - 1) << "\n";
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}