// #define _GLIBCXX_DEBUG // #pragma GCC optimize("O2,unroll-loops") #include using namespace std; #define rep(i, n) for (int i = 0; i < int(n); i++) #define per(i, n) for (int i = (n)-1; 0 <= i; i--) #define rep2(i, l, r) for (int i = (l); i < int(r); i++) #define per2(i, l, r) for (int i = (r)-1; int(l) <= i; i--) #define each(e, v) for (auto &e : v) #define MM << " " << #define pb push_back #define eb emplace_back #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define sz(x) (int)x.size() template void print(const vector &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } using ll = long long; using pii = pair; using pll = pair; template bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template using minheap = std::priority_queue, std::greater>; template using maxheap = std::priority_queue; template int lb(const vector &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template int ub(const vector &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template void rearrange(vector &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } // __int128_t gcd(__int128_t a, __int128_t b) { // if (a == 0) // return b; // if (b == 0) // return a; // __int128_t cnt = a % b; // while (cnt != 0) { // a = b; // b = cnt; // cnt = a % b; // } // return b; // } struct Union_Find_Tree { vector data; const int n; int cnt; Union_Find_Tree(int n) : data(n, -1), n(n), cnt(n) {} int root(int x) { if (data[x] < 0) return x; return data[x] = root(data[x]); } int operator[](int i) { return root(i); } bool unite(int x, int y) { x = root(x), y = root(y); if (x == y) return false; // if (data[x] > data[y]) swap(x, y); data[x] += data[y], data[y] = x; cnt--; return true; } int size(int x) { return -data[root(x)]; } int count() { return cnt; }; bool same(int x, int y) { return root(x) == root(y); } void clear() { cnt = n; fill(begin(data), end(data), -1); } }; // template // struct Mod_Int { // int x; // Mod_Int() : x(0) {} // Mod_Int(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} // static int get_mod() { return mod; } // Mod_Int &operator+=(const Mod_Int &p) { // if ((x += p.x) >= mod) x -= mod; // return *this; // } // Mod_Int &operator-=(const Mod_Int &p) { // if ((x += mod - p.x) >= mod) x -= mod; // return *this; // } // Mod_Int &operator*=(const Mod_Int &p) { // x = (int)(1LL * x * p.x % mod); // return *this; // } // Mod_Int &operator/=(const Mod_Int &p) { // *this *= p.inverse(); // return *this; // } // Mod_Int &operator++() { return *this += Mod_Int(1); } // Mod_Int operator++(int) { // Mod_Int tmp = *this; // ++*this; // return tmp; // } // Mod_Int &operator--() { return *this -= Mod_Int(1); } // Mod_Int operator--(int) { // Mod_Int tmp = *this; // --*this; // return tmp; // } // Mod_Int operator-() const { return Mod_Int(-x); } // Mod_Int operator+(const Mod_Int &p) const { return Mod_Int(*this) += p; } // Mod_Int operator-(const Mod_Int &p) const { return Mod_Int(*this) -= p; } // Mod_Int operator*(const Mod_Int &p) const { return Mod_Int(*this) *= p; } // Mod_Int operator/(const Mod_Int &p) const { return Mod_Int(*this) /= p; } // bool operator==(const Mod_Int &p) const { return x == p.x; } // bool operator!=(const Mod_Int &p) const { return x != p.x; } // Mod_Int inverse() const { // assert(*this != Mod_Int(0)); // return pow(mod - 2); // } // Mod_Int pow(long long k) const { // Mod_Int now = *this, ret = 1; // for (; k > 0; k >>= 1, now *= now) { // if (k & 1) ret *= now; // } // return ret; // } // friend ostream &operator<<(ostream &os, const Mod_Int &p) { // return os << p.x; // } // friend istream &operator>>(istream &is, Mod_Int &p) { // long long a; // is >> a; // p = Mod_Int(a); // return is; // } // }; ll mpow(ll x, ll n, ll mod) { ll ans = 1; x %= mod; while (n != 0) { if (n & 1) ans = ans * x % mod; x = x * x % mod; n = n >> 1; } ans %= mod; return ans; } template T modinv(T a, const T &m) { T b = m, u = 1, v = 0; while (b > 0) { T t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return u >= 0 ? u % m : (m - (-u) % m) % m; } ll divide_int(ll a, ll b) { if (b < 0) a = -a, b = -b; return (a >= 0 ? a / b : (a - b + 1) / b); } // const int MOD = 1000000007; const int MOD = 998244353; // using mint = Mod_Int; // ----- library ------- // 形式的冪級数 // 計算量 加算・減算・微分・積分:O(n)、積・除算・inv・log・exp・pow・sqrt・Taylor Shift:O(n log(n)) // 定義 // df/dx := Σ[k=0,1,...]k([x^k]f(x))x^(k-1) // ∫f(x)dx := Σ[k=0,1,...]([x^k]f(x))x^(k+1)/(k+1) // 1/f(x) := f(x)g(x) = 1 となるような g(x) ([x^0]f(x) = 0) // log(1+f(x)) := Σ[k=0,1,...](-1)^(k+1)f(x)^k/k ([x^0]f(x) = 0) // exp(f(x)) := Σ[k=0,1,...]f(x)^k/k! ([x^0]f(x) = 0) // √f(x) := g(x)^2 = f(x) を満たす g(x) // 概要 // 積:NTT // inv・exp・sqrt:ニュートン法を用いた漸化式を立てて計算する。 // 除算:inv を用いて計算する。 // log:inv を用いて計算する。 // pow:log と exp を用いて計算する。 // Taylor Shift:係数を分解して畳み込みに持ち込む。 // verified with // https://judge.yosupo.jp/problem/inv_of_formal_power_series // https://judge.yosupo.jp/problem/log_of_formal_power_series // https://judge.yosupo.jp/problem/exp_of_formal_power_series // https://judge.yosupo.jp/problem/pow_of_formal_power_series // https://judge.yosupo.jp/problem/division_of_polynomials // https://judge.yosupo.jp/problem/polynomial_taylor_shift using namespace std; // 数論変換 (高速剰余変換) (mod は x*(2^y)+1 で表されるもの (n+m<=2^y)) // 計算量 O((n+m)log(n+m)) // 概要 // mod を pとして、p = x*2^y+1 と表したとき、2^y >= n+m-1 が成立すれば FFT が行える。 // r を P の原子根とすれば、体 Z/pZ での 1 の 2^k 乗根は r^(x*2^(y-k)) として得られる。 // 代表的な (p,r) の組として (998244353,3) がある。 // verified with // https://atcoder.jp/contests/practice2/tasks/practice2_f // https://judge.yosupo.jp/problem/convolution_mod using namespace std; // mod-int 構造体 (mod は素数) // 計算量 加減乗算:O(1)、除算:O(log(mod))、k 乗:O(log(k)) // 累乗:ダブリング // 逆元:a と m が互いに素なとき、フェルマーの小定理より a^(m-1) ≡ 1(mod m) なので、a の逆元は a^(m-2) // verified with // http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DPL_5_A&lang=ja using namespace std; template struct Mod_Int { int x; Mod_Int() : x(0) {} Mod_Int(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} static int get_mod() { return mod; } Mod_Int &operator+=(const Mod_Int &p) { if ((x += p.x) >= mod) x -= mod; return *this; } Mod_Int &operator-=(const Mod_Int &p) { if ((x += mod - p.x) >= mod) x -= mod; return *this; } Mod_Int &operator*=(const Mod_Int &p) { x = (int)(1LL * x * p.x % mod); return *this; } Mod_Int &operator/=(const Mod_Int &p) { *this *= p.inverse(); return *this; } Mod_Int &operator++() { return *this += Mod_Int(1); } Mod_Int operator++(int) { Mod_Int tmp = *this; ++*this; return tmp; } Mod_Int &operator--() { return *this -= Mod_Int(1); } Mod_Int operator--(int) { Mod_Int tmp = *this; --*this; return tmp; } Mod_Int operator-() const { return Mod_Int(-x); } Mod_Int operator+(const Mod_Int &p) const { return Mod_Int(*this) += p; } Mod_Int operator-(const Mod_Int &p) const { return Mod_Int(*this) -= p; } Mod_Int operator*(const Mod_Int &p) const { return Mod_Int(*this) *= p; } Mod_Int operator/(const Mod_Int &p) const { return Mod_Int(*this) /= p; } bool operator==(const Mod_Int &p) const { return x == p.x; } bool operator!=(const Mod_Int &p) const { return x != p.x; } Mod_Int inverse() const { assert(*this != Mod_Int(0)); return pow(mod - 2); } Mod_Int pow(long long k) const { Mod_Int now = *this, ret = 1; for (; k > 0; k >>= 1, now *= now) { if (k & 1) ret *= now; } return ret; } friend ostream &operator<<(ostream &os, const Mod_Int &p) { return os << p.x; } friend istream &operator>>(istream &is, Mod_Int &p) { long long a; is >> a; p = Mod_Int(a); return is; } }; template struct Number_Theoretic_Transform { static int max_base; static T root; static vector r, ir; Number_Theoretic_Transform() {} static void init() { if (!r.empty()) return; int mod = T::get_mod(); int tmp = mod - 1; root = 2; while (root.pow(tmp >> 1) == 1) root++; max_base = 0; while (tmp % 2 == 0) tmp >>= 1, max_base++; r.resize(max_base), ir.resize(max_base); for (int i = 0; i < max_base; i++) { r[i] = -root.pow((mod - 1) >> (i + 2)); // r[i] := 1 の 2^(i+2) 乗根 ir[i] = r[i].inverse(); // ir[i] := 1/r[i] } } static void ntt(vector &a) { init(); int n = a.size(); assert((n & (n - 1)) == 0); assert(n <= (1 << max_base)); for (int k = n; k >>= 1;) { T w = 1; for (int s = 0, t = 0; s < n; s += 2 * k) { for (int i = s, j = s + k; i < s + k; i++, j++) { T x = a[i], y = w * a[j]; a[i] = x + y, a[j] = x - y; } w *= r[__builtin_ctz(++t)]; } } } static void intt(vector &a) { init(); int n = a.size(); assert((n & (n - 1)) == 0); assert(n <= (1 << max_base)); for (int k = 1; k < n; k <<= 1) { T w = 1; for (int s = 0, t = 0; s < n; s += 2 * k) { for (int i = s, j = s + k; i < s + k; i++, j++) { T x = a[i], y = a[j]; a[i] = x + y, a[j] = w * (x - y); } w *= ir[__builtin_ctz(++t)]; } } T inv = T(n).inverse(); for (auto &e : a) e *= inv; } static vector convolve(vector a, vector b) { if (a.empty() || b.empty()) return {}; if (min(a.size(), b.size()) < 40) { int n = a.size(), m = b.size(); vector c(n + m - 1, 0); for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) c[i + j] += a[i] * b[j]; } return c; } int k = (int)a.size() + (int)b.size() - 1, n = 1; while (n < k) n <<= 1; a.resize(n), b.resize(n); ntt(a), ntt(b); for (int i = 0; i < n; i++) a[i] *= b[i]; intt(a), a.resize(k); return a; } }; template int Number_Theoretic_Transform::max_base = 0; template T Number_Theoretic_Transform::root = T(); template vector Number_Theoretic_Transform::r = vector(); template vector Number_Theoretic_Transform::ir = vector(); template struct Formal_Power_Series : vector { using NTT_ = Number_Theoretic_Transform; using vector::vector; Formal_Power_Series(const vector &f) : vector(f) {} // f(x) mod x^n Formal_Power_Series pre(int n) const { Formal_Power_Series ret(begin(*this), begin(*this) + min((int)this->size(), n)); ret.resize(n, 0); return ret; } // f(1/x)x^{n-1} Formal_Power_Series rev(int n = -1) const { Formal_Power_Series ret = *this; if (n != -1) ret.resize(n, 0); reverse(begin(ret), end(ret)); return ret; } void normalize() { while (!this->empty() && this->back() == 0) this->pop_back(); } Formal_Power_Series operator-() const { Formal_Power_Series ret = *this; for (int i = 0; i < (int)ret.size(); i++) ret[i] = -ret[i]; return ret; } Formal_Power_Series &operator+=(const T &t) { if (this->empty()) this->resize(1, 0); (*this)[0] += t; return *this; } Formal_Power_Series &operator+=(const Formal_Power_Series &g) { if (g.size() > this->size()) this->resize(g.size()); for (int i = 0; i < (int)g.size(); i++) (*this)[i] += g[i]; this->normalize(); return *this; } Formal_Power_Series &operator-=(const T &t) { if (this->empty()) this->resize(1, 0); *this[0] -= t; return *this; } Formal_Power_Series &operator-=(const Formal_Power_Series &g) { if (g.size() > this->size()) this->resize(g.size()); for (int i = 0; i < (int)g.size(); i++) (*this)[i] -= g[i]; this->normalize(); return *this; } Formal_Power_Series &operator*=(const T &t) { for (int i = 0; i < (int)this->size(); i++) (*this)[i] *= t; return *this; } Formal_Power_Series &operator*=(const Formal_Power_Series &g) { if (empty(*this) || empty(g)) { this->clear(); return *this; } return *this = NTT_::convolve(*this, g); } Formal_Power_Series &operator/=(const T &t) { assert(t != 0); T inv = t.inverse(); return *this *= inv; } // f(x) を g(x) で割った商 Formal_Power_Series &operator/=(const Formal_Power_Series &g) { if (g.size() > this->size()) { this->clear(); return *this; } int n = this->size(), m = g.size(); return *this = (rev() * g.rev().inv(n - m + 1)).pre(n - m + 1).rev(); } // f(x) を g(x) で割った余り Formal_Power_Series &operator%=(const Formal_Power_Series &g) { return *this -= (*this / g) * g; } // f(x)/x^k Formal_Power_Series &operator<<=(int k) { Formal_Power_Series ret(k, 0); ret.insert(end(ret), begin(*this), end(*this)); return *this = ret; } // f(x)x^k Formal_Power_Series &operator>>=(int k) { Formal_Power_Series ret; ret.insert(end(ret), begin(*this) + k, end(*this)); return *this = ret; } Formal_Power_Series operator+(const T &t) const { return Formal_Power_Series(*this) += t; } Formal_Power_Series operator+(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) += g; } Formal_Power_Series operator-(const T &t) const { return Formal_Power_Series(*this) -= t; } Formal_Power_Series operator-(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) -= g; } Formal_Power_Series operator*(const T &t) const { return Formal_Power_Series(*this) *= t; } Formal_Power_Series operator*(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) *= g; } Formal_Power_Series operator/(const T &t) const { return Formal_Power_Series(*this) /= t; } Formal_Power_Series operator/(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) /= g; } Formal_Power_Series operator%(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) %= g; } Formal_Power_Series operator<<(int k) const { return Formal_Power_Series(*this) <<= k; } Formal_Power_Series operator>>(int k) const { return Formal_Power_Series(*this) >>= k; } // f(c) T val(const T &c) const { T ret = 0; for (int i = (int)this->size() - 1; i >= 0; i--) ret *= c, ret += (*this)[i]; return ret; } // df/dx Formal_Power_Series derivative() const { if (empty(*this)) return *this; int n = this->size(); Formal_Power_Series ret(n - 1); for (int i = 1; i < n; i++) ret[i - 1] = (*this)[i] * i; return ret; } // ∫f(x)dx Formal_Power_Series integral() const { if (empty(*this)) return *this; int n = this->size(); vector inv(n + 1, 0); inv[1] = 1; int mod = T::get_mod(); for (int i = 2; i <= n; i++) inv[i] = -inv[mod % i] * T(mod / i); Formal_Power_Series ret(n + 1, 0); for (int i = 0; i < n; i++) ret[i + 1] = (*this)[i] * inv[i + 1]; return ret; } // 1/f(x) mod x^n (f[0] != 0) Formal_Power_Series inv(int n = -1) const { assert((*this)[0] != 0); if (n == -1) n = this->size(); Formal_Power_Series ret(1, (*this)[0].inverse()); for (int m = 1; m < n; m <<= 1) { Formal_Power_Series f = pre(2 * m), g = ret; f.resize(2 * m), g.resize(2 * m); NTT_::ntt(f), NTT_::ntt(g); Formal_Power_Series h(2 * m); for (int i = 0; i < 2 * m; i++) h[i] = f[i] * g[i]; NTT_::intt(h); for (int i = 0; i < m; i++) h[i] = 0; NTT_::ntt(h); for (int i = 0; i < 2 * m; i++) h[i] *= g[i]; NTT_::intt(h); for (int i = 0; i < m; i++) h[i] = 0; ret -= h; } ret.resize(n); return ret; } // log(f(x)) mod x^n (f[0] = 1) Formal_Power_Series log(int n = -1) const { assert((*this)[0] == 1); if (n == -1) n = this->size(); Formal_Power_Series ret = (derivative() * inv(n)).pre(n - 1).integral(); ret.resize(n); return ret; } // exp(f(x)) mod x^n (f[0] = 0) Formal_Power_Series exp(int n = -1) const { assert((*this)[0] == 0); if (n == -1) n = this->size(); vector inv(2 * n + 1, 0); inv[1] = 1; int mod = T::get_mod(); for (int i = 2; i <= 2 * n; i++) inv[i] = -inv[mod % i] * T(mod / i); auto inplace_integral = [inv](Formal_Power_Series &f) { if (empty(f)) return; int n = f.size(); f.insert(begin(f), 0); for (int i = 1; i <= n; i++) f[i] *= inv[i]; }; auto inplace_derivative = [](Formal_Power_Series &f) { if (empty(f)) return; int n = f.size(); f.erase(begin(f)); for (int i = 0; i < n - 1; i++) f[i] *= T(i + 1); }; Formal_Power_Series ret{1, this->size() > 1 ? (*this)[1] : 0}, c{1}, z1, z2{1, 1}; for (int m = 2; m < n; m *= 2) { auto y = ret; y.resize(2 * m); NTT_::ntt(y); z1 = z2; Formal_Power_Series z(m); for (int i = 0; i < m; i++) z[i] = y[i] * z1[i]; NTT_::intt(z); fill(begin(z), begin(z) + m / 2, 0); NTT_::ntt(z); for (int i = 0; i < m; i++) z[i] *= -z1[i]; NTT_::intt(z); c.insert(end(c), begin(z) + m / 2, end(z)); z2 = c, z2.resize(2 * m); NTT_::ntt(z2); Formal_Power_Series x(begin(*this), begin(*this) + min((int)this->size(), m)); inplace_derivative(x); x.resize(m, 0); NTT_::ntt(x); for (int i = 0; i < m; i++) x[i] *= y[i]; NTT_::intt(x); x -= ret.derivative(), x.resize(2 * m); for (int i = 0; i < m - 1; i++) x[m + i] = x[i], x[i] = 0; NTT_::ntt(x); for (int i = 0; i < 2 * m; i++) x[i] *= z2[i]; NTT_::intt(x); x.pop_back(); inplace_integral(x); for (int i = m; i < min((int)this->size(), 2 * m); i++) x[i] += (*this)[i]; fill(begin(x), begin(x) + m, 0); NTT_::ntt(x); for (int i = 0; i < 2 * m; i++) x[i] *= y[i]; NTT_::intt(x); ret.insert(end(ret), begin(x) + m, end(x)); } ret.resize(n); return ret; } // f(x)^k mod x^n Formal_Power_Series pow(long long k, int n = -1) const { if (n == -1) n = this->size(); int m = this->size(); for (int i = 0; i < m; i++) { if ((*this)[i] == 0) continue; T inv = (*this)[i].inverse(); Formal_Power_Series g(m - i, 0); for (int j = i; j < m; j++) g[j - i] = (*this)[j] * inv; g = (g.log(n) * k).exp(n) * ((*this)[i].pow(k)); Formal_Power_Series ret(n, 0); if (i > 0 && k > n / i) return ret; long long d = i * k; for (int j = 0; j + d < n && j < g.size(); j++) ret[j + d] = g[j]; return ret; } Formal_Power_Series ret(n, 0); if (k == 0) ret[0] = 1; return ret; } // √f(x) mod x^n (存在しなければ空) Formal_Power_Series sqrt(int n = -1) const { if (n == -1) n = this->size(); int mod = T::get_mod(); auto sqrt_mod = [mod](const T &a) { if (mod == 2) return a; int s = mod - 1, t = 0; while (s % 2 == 0) s /= 2, t++; T root = 2; while (root.pow((mod - 1) / 2) == 1) root++; T x = a.pow((s + 1) / 2); T u = root.pow(s); T y = x * x * a.inverse(); while (y != 1) { int k = 0; T z = y; while (z != 1) k++, z *= z; for (int i = 0; i < t - k - 1; i++) u *= u; x *= u, u *= u, y *= u; t = k; } return x; }; if ((*this)[0] == 0) { for (int i = 1; i < (int)this->size(); i++) { if ((*this)[i] != 0) { if (i & 1) return {}; if ((*this)[i].pow((mod - 1) / 2) != 1) return {}; if (n <= i / 2) break; return ((*this) >> i).sqrt(n - i / 2) << (i / 2); } } return Formal_Power_Series(n, 0); } if ((*this)[0].pow((mod - 1) / 2) != 1) return {}; T tw = T(2).inverse(); Formal_Power_Series ret{sqrt_mod((*this)[0])}; for (int m = 1; m < n; m *= 2) { Formal_Power_Series g = (*this).pre(m * 2) * ret.inv(m * 2); g.resize(2 * m); ret = (ret + g) * tw; } ret.resize(n); return ret; } // f(x+c) Formal_Power_Series Taylor_shift(T c) const { int n = this->size(); vector ifac(n, 1); Formal_Power_Series f(n), g(n); for (int i = 0; i < n; i++) { f[n - 1 - i] = (*this)[i] * ifac[n - 1]; if (i < n - 1) ifac[n - 1] *= i + 1; } ifac[n - 1] = ifac[n - 1].inverse(); for (int i = n - 1; i > 0; i--) ifac[i - 1] = ifac[i] * i; T pw = 1; for (int i = 0; i < n; i++) { g[i] = pw * ifac[i]; pw *= c; } f *= g; Formal_Power_Series b(n); for (int i = 0; i < n; i++) b[i] = f[n - 1 - i] * ifac[i]; return b; } }; // 組み合わせ // 計算量 前計算:O(n)、二項係数:O(1)、逆数:O(1)、第 2 種スターリング数:O(k log(n))、ベル数:O(min(n,k)log(n)) // 第 2 種スターリング数:n 個の区別できる玉を、k 個の区別しない箱に、各箱に 1 個以上玉が入るように入れる場合の数 // ベル数:n 個の区別できる玉を、k 個の区別しない箱に入れる場合の数 // 概要 // 前計算:i = 0,1,...,n について i! とその逆元を求める。 // 二項係数:nCk = n!/((n-k)!*k!), nPk = n!/(n-k)!, nHk = (n+k-1)Ck // 逆数:1/k = (k-1)!/k! // 第 2 種スターリング数:包除原理 // ベル数:第 2 種スターリング数の和 // verified with // https://judge.yosupo.jp/problem/binomial_coefficient_prime_mod // http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DPL_5_B&lang=ja // http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DPL_5_D&lang=ja // http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DPL_5_E&lang=ja // http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DPL_5_G&lang=ja // http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DPL_5_I&lang=ja using namespace std; template struct Combination { static vector _fac, _ifac; Combination() {} static void init(int n) { _fac.resize(n + 1), _ifac.resize(n + 1); _fac[0] = 1; for (int i = 1; i <= n; i++) _fac[i] = _fac[i - 1] * i; _ifac[n] = _fac[n].inverse(); for (int i = n; i >= 1; i--) _ifac[i - 1] = _ifac[i] * i; } static T fac(int k) { return _fac[k]; } static T ifac(int k) { return _ifac[k]; } static T inv(int k) { return fac(k - 1) * ifac(k); } static T P(int n, int k) { if (k < 0 || n < k) return 0; return fac(n) * ifac(n - k); } static T C(int n, int k) { if (k < 0 || n < k) return 0; return fac(n) * ifac(n - k) * ifac(k); } // n 個の区別できる箱に、k 個の区別できない玉を入れる場合の数 static T H(int n, int k) { if (n < 0 || k < 0) return 0; return k == 0 ? 1 : C(n + k - 1, k); } // n 個の区別できる玉を、k 個の区別しない箱に、各箱に 1 個以上玉が入るように入れる場合の数 static T second_stirling_number(int n, int k) { T ret = 0; for (int i = 0; i <= k; i++) { T tmp = C(k, i) * T(i).pow(n); ret += ((k - i) & 1) ? -tmp : tmp; } return ret * ifac(k); } // n 個の区別できる玉を、k 個の区別しない箱に入れる場合の数 static T bell_number(int n, int k) { if (n == 0) return 1; k = min(k, n); vector pref(k + 1); pref[0] = 1; for (int i = 1; i <= k; i++) { if (i & 1) { pref[i] = pref[i - 1] - ifac(i); } else { pref[i] = pref[i - 1] + ifac(i); } } T ret = 0; for (int i = 1; i <= k; i++) ret += T(i).pow(n) * ifac(i) * pref[k - i]; return ret; } }; template vector Combination::_fac = vector(); template vector Combination::_ifac = vector(); // ----- library ------- int main() { ios::sync_with_stdio(false); std::cin.tie(nullptr); cout << fixed << setprecision(15); using mint = Mod_Int; using comb = Combination; comb::init(1e6); int n, k; cin >> n >> k; using FPS = Formal_Power_Series; FPS f(n + 1, 0); for (int i = 1; i <= n; i++) for (ll j = 1; j * i * (k + 1) <= n; j++) f[j * i * (k + 1)] -= comb::inv(j); f = f.exp(); FPS fi(n + 1, 0); for (int i = 1; i <= n; i++) for (ll j = 1; j * i <= n; j++) fi[j * i] -= comb::inv(j); fi = fi.exp().inv(); f *= fi; rep2(i, 1, n + 1) cout << f[i] << (i == n ? '\n' : ' '); }