//#define NDEBUG #include #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 { if (a < b) { return b - a; } else { return 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 class fix_point : private F { public: explicit constexpr fix_point(F &&f) : F(std::forward(f)) {} template constexpr decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, std::forward(args)...); } }; template constexpr decltype(auto) make_fix(F &&f) { return fix_point(std::forward(f)); } template T scan() { T ret; std::cin >> ret; return ret; } } // namespace n91 #include #include #include namespace n91 { void main_() { /* std::ios::sync_with_stdio(false); std::cin.tie(nullptr); //*/ const usize n = scan(); const usize k = scan(); if (n / k % 2 != 0 && (n + 1) % 2 != 0) { std::cout << "No" << std::endl; return; } if (n / k % 2 == 0) { std::cout << "Yes" << std::endl; auto ans = md_vec(k, 0, usize()); for (const usize i : rep(0, n)) { if (i / k % 2 == 0) { ans[i % k].push_back(i); } else { ans[k - 1 - i % k].push_back(i); } } for (const auto &v : ans) { for (const auto e : v) { std::cout << e + 1 << ' '; } std::cout << std::endl; } } else { if (k <= n / k) { std::cout << "Yes" << std::endl; auto ans = md_vec(k, 0, usize()); for (const usize i : rep(0, n - k * k)) { if (i / k % 2 == 0) { ans[i % k].push_back(i); } else { ans[k - 1 - i % k].push_back(i); } } { usize c = 0; for (const usize i : rep(n - k * k, n)) { ans[c % k].push_back(i); c += 1; if (i % k == k - 1) { c += 1; } } } for (const auto &v : ans) { for (const auto e : v) { std::cout << e + 1 << ' '; } std::cout << std::endl; } return; } if (k == n) { std::cout << "No" << std::endl; return; } std::cout << "Yes" << std::endl; auto ans = md_vec(k, 0, usize()); for (const usize i : rep(0, n - k * 3)) { if (i / k % 2 == 0) { ans[i % k].push_back(i); } else { ans[k - 1 - i % k].push_back(i); } } { std::vector v(k * 3); for (const usize i : rep(0, k * 3)) { v[i] = i; } std::reverse(v.begin() + k, v.begin() + k * 2); { usize l = 1; usize r = 0; for (const usize i : rep(1, k / 2 + 1)) { if (i % 2 == 1) { r += 2; } else { l += 2; } } usize i = 0; r = l; l = l - 1; while (i != l) { std::swap(v[i], v[l]); i += 1; l -= 1; } i = k - 1; while (r < i) { std::swap(v[r], v[i]); r += 1; i -= 1; } } for (const usize i : rep(0, k)) { v[k * 2 + i] = k * 2 + (k / 2) + 2 * k - 1 - v[i] - v[k + i]; ans[i].push_back(n - k * 3 + v[i]); ans[i].push_back(n - k * 3 + v[k + i]); ans[i].push_back(n - k * 3 + v[2 * k + i]); } } for (const auto &v : ans) { for (const auto e : v) { std::cout << e + 1 << ' '; } std::cout << std::endl; } } } } // namespace n91 int main() { n91::main_(); return 0; }