//#define NDEBUG #include #include #include #include #include namespace n91 { using i8 = std::int_fast8_t; using i32 = std::int_fast32_t; using i64 = std::int_fast64_t; using u8 = std::uint_fast8_t; using u32 = std::uint_fast32_t; using u64 = std::uint_fast64_t; using isize = std::ptrdiff_t; using usize = std::size_t; struct rep { struct itr { usize i; constexpr itr(const usize i) noexcept : i(i) {} void operator++() noexcept { ++i; } constexpr usize operator*() const noexcept { return i; } constexpr bool operator!=(const itr x) const noexcept { return i != x.i; } }; const itr f, l; constexpr rep(const usize f, const usize l) noexcept : f(std::min(f, l)), l(l) {} constexpr auto begin() const noexcept { return f; } constexpr auto end() const noexcept { return l; } }; struct revrep { struct itr { usize i; constexpr itr(const usize i) noexcept : i(i) {} void operator++() noexcept { --i; } constexpr usize operator*() const noexcept { return i; } constexpr bool operator!=(const itr x) const noexcept { return i != x.i; } }; const itr f, l; constexpr revrep(const usize f, const usize l) noexcept : f(l - 1), l(std::min(f, l) - 1) {} constexpr auto begin() const noexcept { return f; } constexpr auto end() const noexcept { return l; } }; template auto md_vec(const usize n, const T& value) { return std::vector(n, value); } template auto md_vec(const usize n, Args... args) { return std::vector(n, md_vec(args...)); } template constexpr T difference(const T& a, const T& b) noexcept { return a < b ? b - a : a - b; } template void chmin(T& a, const T& b) noexcept { if (b < a) a = b; } template void chmax(T& a, const T& b) noexcept { if (a < b) a = b; } template T scan() { T ret; std::cin >> ret; return ret; } } // namespace n91 #include #include #include #include #include #include namespace n91 { void main_() { using bs = std::bitset<61>; const usize n{ scan() }; const u64 ll{ scan() }; const u64 rr{ scan() }; std::vector a(n); for (auto& e : a) { e = scan(); } std::vector state(61, 3); bool no_sat = false; const auto solve = [&](const auto& solve, const usize l, const usize r, const usize p) { if (l == r) { return; } if (p >= 61) { return; } usize zero = 0, one = 0; for (const auto i : rep(l, r)) { if (a[i].test(p)) { ++one; } else { ++zero; } } if (zero != 0 && one != 0) { bool zo = true; for (const auto i : rep(l, l + zero)) { if (a[i].test(p)) { zo = false; } } if (zo) { if (state[p] % 2 == 0) { no_sat = true; return; } state[p] = 1; solve(solve, l, l + zero, p - 1); solve(solve, r - one, r, p - 1); } else { bool oz = true; for (const auto i : rep(l, l + one)) { if (!a[i].test(p)) { oz = false; } } if (oz) { if (state[p] / 2 == 0) { no_sat = true; return; } state[p] = 2; solve(solve, l, l + one, p - 1); solve(solve, r - zero, r, p - 1); } else { no_sat = true; return; } } } else { solve(solve, l, r, p - 1); } }; solve(solve, 0, n, 60); if (no_sat) { std::cout << 0 << std::endl; return; } const auto f = [&state](const bs x) { u64 t = 1, d = 0; for (const auto i : revrep(0, 61)) { u64 nt = 0, nd = 0; if (x.test(i)) { if (state[i] % 2 != 0) { nd += t; nd += d; } if (state[i] / 2 != 0) { nt += t; nd += d; } } else { if (state[i] % 2 != 0) { nt += t; nd += d; } if (state[i] / 2 != 0) { nd += d; } } t = nt; d = nd; } return d + t; }; u64 ans = f(rr); if (ll != 0) { ans -= f(ll - 1); } std::cout << ans << std::endl; } } // namespace n91 int main() { n91::main_(); return 0; }