#include <bits/stdc++.h> #include <atcoder/all> using namespace std; using namespace atcoder; #define overload4(_1, _2, _3, _4, name, ...) name #define rep1(n) for(int i = 0; i < (int)(n); ++i) #define rep2(i, n) for(int i = 0; i < (int)(n); ++i) #define rep3(i, a, b) for(int i = (a); i < (int)(b); ++i) #define rep4(i, a, b, c) for(int i = (a); i < (int)(b); i += (c)) #define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__) #define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; --i) #define ALL(a) (a).begin(), (a).end() #define Sort(a) (sort((a).begin(), (a).end())) #define RSort(a) (sort((a).rbegin(), (a).rend())) #define UNIQUE(a) (a.erase(unique((a).begin(), (a).end()), (a).end())) typedef long long int ll; typedef unsigned long long ul; typedef long double ld; typedef vector<int> vi; typedef vector<long long> vll; typedef vector<char> vc; typedef vector<string> vst; typedef vector<double> vd; typedef vector<long double> vld; typedef pair<long long, long long> P; template<class T> long long sum(const T &a){ return accumulate(a.begin(), a.end(), 0LL); } template<class T> auto min(const T &a){ return *min_element(a.begin(), a.end()); } template<class T> auto max(const T &a){ return *max_element(a.begin(), a.end()); } const long long MINF = 0x7fffffffffff; const long long INF = 0x1fffffffffffffff; const long long MOD = 998244353; const long double EPS = 1e-9; const long double PI = acos(-1); template<class T> inline bool chmax(T &a, T b) { if(a < b) { a = b; return 1; } return 0; } template<class T> inline bool chmin(T &a, T b) { if(a > b) { a = b; return 1; } return 0; } template<typename T1, typename T2> istream &operator>>(istream &is, pair<T1, T2> &p){ is >> p.first >> p.second; return is; } template<typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &p){ os << "(" << p.first << ", " << p.second << ")"; return os; } template<typename T> istream &operator>>(istream &is, vector<T> &v){ for(T &in : v) is >> in; return is; } template<typename T> ostream &operator<<(ostream &os, const vector<T> &v){ for(int i = 0; i < (int) v.size(); ++i){ os << v[i] << (i + 1 != (int) v.size() ? " " : ""); } return os; } template <typename T, typename S> ostream &operator<<(ostream &os, const map<T, S> &mp){ for(auto &[key, val] : mp){ os << key << ":" << val << " "; } return os; } template <typename T> ostream &operator<<(ostream &os, const set<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int) st.size(); ++i){ os << *itr << (i + 1 != (int) st.size() ? " " : ""); itr++; } return os; } template <typename T> ostream &operator<<(ostream &os, const multiset<T> &st){ auto itr = st.begin(); for(int i = 0; i < (int) st.size(); ++i){ os << *itr << (i + 1 != (int) st.size() ? " " : ""); itr++; } return os; } template <typename T> ostream &operator<<(ostream &os, queue<T> q){ while(q.size()){ os << q.front() << " "; q.pop(); } return os; } template <typename T> ostream &operator<<(ostream &os, deque<T> q){ while(q.size()){ os << q.front() << " "; q.pop_front(); } return os; } template <typename T> ostream &operator<<(ostream &os, stack<T> st){ while(st.size()){ os << st.top() << " "; st.pop(); } return os; } template <class T, class Container, class Compare> ostream &operator<<(ostream &os, priority_queue<T, Container, Compare> pq){ while(pq.size()){ os << pq.top() << " "; pq.pop(); } return os; } template <typename T> long long binary_search(long long ok, long long ng, T check){ while(abs(ok - ng) > 1){ long long mid = (ok + ng) / 2; if(check(mid)) ok = mid; else ng = mid; } return ok; } template <typename T> long double binary_search_real(long double ok, long double ng, T check, int iter = 100){ for(int i = 0; i < iter; ++i){ long double mid = (ok + ng) / 2; if(check(mid)) ok = mid; else ng = mid; } return ok; } template <typename T> long long trisum(T a, T b){ long long res = ((b - a + 1) * (a + b)) / 2; return res; } template <typename T> T intpow(T x, int n){ T ret = 1; while(n > 0) { if(n & 1) (ret *= x); (x *= x); n >>= 1; } return ret; } template <typename T> T getReminder(T a, T b){ if(b == 0) return -1; if(a >= 0 && b > 0){ return a % b; } else if(a < 0 && b > 0){ return ((a % b) + b) % b; } else if(a >= 0 && b < 0){ return a % b; } else{ return (abs(b) - abs(a % b)) % b; } } template<class T, class U> inline T vin(T &vec, U n) { vec.resize(n); for(int i = 0; i < (int) n; ++i) cin >> vec[i]; return vec; } template<class T> inline void vout(T vec, string s = "\n"){ for(auto x : vec) cout << x << s; } template<class... T> void in(T&... a){ (cin >> ... >> a); } void out(){ cout << '\n'; } template<class T, class... Ts> void out(const T &a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; } template<class T, class U> void inGraph(vector<vector<T>> &G, U n, U m, bool directed = false){ G.resize(n); for(int i = 0; i < m; ++i){ int a, b; cin >> a >> b; a--, b--; G[a].push_back(b); if(!directed) G[b].push_back(a); } } template <long long Modulus> struct ModInt{ long long val; static constexpr int mod() { return Modulus; } constexpr ModInt(const long long _val = 0) noexcept : val(_val) { normalize(); } void normalize(){ val = (val % Modulus + Modulus) % Modulus; } inline ModInt &operator+=(const ModInt &rhs) noexcept { if(val += rhs.val, val >= Modulus) val -= Modulus; return *this; } inline ModInt &operator-=(const ModInt &rhs) noexcept { if(val -= rhs.val, val < 0) val += Modulus; return *this; } inline ModInt &operator*=(const ModInt &rhs) noexcept { val = val * rhs.val % Modulus; return *this; } inline ModInt &operator/=(const ModInt &rhs) noexcept { val = val * inv(rhs.val).val % Modulus; return *this; } inline ModInt &operator++() noexcept { if(++val >= Modulus) val -= Modulus; return *this; } inline ModInt operator++(int) noexcept { ModInt t = val; if(++val >= Modulus) val -= Modulus; return t; } inline ModInt &operator--() noexcept { if(--val < 0) val += Modulus; return *this; } inline ModInt operator--(int) noexcept { ModInt t = val; if(--val < 0) val += Modulus; return t; } inline ModInt operator-() const noexcept { return (Modulus - val) % Modulus; } inline ModInt inv(void) const { return inv(val); } ModInt pow(long long n) const { assert(0 <= n); ModInt x = *this, r = 1; while(n){ if(n & 1) r *= x; x *= x; n >>= 1; } return r; } ModInt inv(const long long n) const { long long a = n, b = Modulus, u = 1, v = 0; while(b){ long long t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); } u %= Modulus; if(u < 0) u += Modulus; return u; } friend inline ModInt operator+(const ModInt &lhs, const ModInt &rhs) noexcept { return ModInt(lhs) += rhs; } friend inline ModInt operator-(const ModInt &lhs, const ModInt &rhs) noexcept { return ModInt(lhs) -= rhs; } friend inline ModInt operator*(const ModInt &lhs, const ModInt &rhs) noexcept { return ModInt(lhs) *= rhs; } friend inline ModInt operator/(const ModInt &lhs, const ModInt &rhs) noexcept { return ModInt(lhs) /= rhs; } friend inline bool operator==(const ModInt &lhs, const ModInt &rhs) noexcept { return lhs.val == rhs.val; } friend inline bool operator!=(const ModInt &lhs, const ModInt &rhs) noexcept { return lhs.val != rhs.val; } friend inline std::istream &operator>>(std::istream &is, ModInt &x) noexcept { is >> x.val; x.normalize(); return is; } friend inline std::ostream &operator<<(std::ostream &os, const ModInt &x) noexcept { return os << x.val; } }; #line 2 "lib/math/crt.hpp" /** * @brief Chinese Remainder Theorem (中国剰余定理) * @docs docs/math/crt.md */ #include <numeric> #line 10 "lib/math/crt.hpp" namespace CRT{ inline long long mod(long long a, long long m){ return (a % m + m) % m; } long long extGCD(long long a, long long b, long long &x, long long &y){ if(b == 0){ x = 1; y = 0; return a; } long long d = extGCD(b, a % b, y, x); y -= a / b * x; return d; } std::pair<long long, long long> chineseRem(const std::vector<long long> &b, const std::vector<long long> &m) { long long r = 0, M = 1; for(int i = 0; i < (int) b.size(); i++){ long long p, q; long long d = extGCD(M, m[i], p, q); if((b[i] - r) % d != 0) return {0, -1}; long long tmp = (b[i] - r) / d * p % (m[i] / d); r += M * tmp; M *= m[i] / d; } r %= M; if(r < 0) r += M; return {r, M}; } // not coprime long long preGarner(std::vector<long long> &b, std::vector<long long> &m, const long long MOD){ long long res = 1; int n = b.size(); for(int i = 0; i < n; i++){ for(int j = 0; j < i; j++){ long long g = std::gcd(m[i], m[j]); if((b[i] - b[j]) % g != 0) return -1; m[i] /= g, m[j] /= g; // gcd の分だけ被ってるので振り分ける long long gi = std::gcd(m[i], g), gj = g / gi; do{ g = std::gcd(gi, gj); gi *= g, gj /= g; }while(g != 1); m[i] *= gi, m[j] *= gj; b[i] %= m[i], b[j] %= m[j]; } } for(auto x : m) (res *= x) %= MOD; return res; } long long garner(const std::vector<long long> &b, const std::vector<long long> &m, const long long MOD){ std::vector<long long> tm = m; tm.push_back(MOD); auto inv = [&](long long a, long long m) -> long long { long long x, y; extGCD(a, m, x, y); return mod(x, m); }; int n = b.size(); std::vector<long long> coeffs(n + 1, 1), constants(n + 1, 0); for(int i = 0; i < n; i++){ // solve "coeffs[i] * t[i] + constants[i] = b[i] (mod. m[i]) long long t = mod((b[i] - constants[i]) * inv(coeffs[i], tm[i]), tm[i]); for(int j = i + 1; j < n + 1; j++){ (constants[j] += t * coeffs[j]) %= tm[j]; (coeffs[j] *= tm[i]) %= tm[j]; } } return constants[n]; } // ax + b ≡ 0 (mod m) long long modEquation(long long a, long long b, long long m, bool is_positive = false){ a %= m; b %= m; b = (m - b) % m; long long g = std::gcd(a, m); if(b % g != 0) return -1; a /= g; b /= g; m /= g; if(is_positive && b == 0){ return m; } long long x, y; extGCD(a, m, x, y); return (b * x % m + m) % m; } } #line 9 "lib/convolution/ntt.hpp" #line 11 "lib/convolution/ntt.hpp" namespace NTT{ // @param n `0 <= n` // @return minimum non-negative `x` s.t. `n <= 2**x` int ceil_pow2(int n) { int x = 0; while((1U << x) < (unsigned int) (n)) x++; return x; } // @param n `1 <= n` // @return minimum non-negative `x` s.t. `(n & (1 << x)) != 0` int bsf(unsigned int n) { return __builtin_ctz(n); } int primitive_root(int m) { if(m == 2) return 1; if(m == 167772161) return 3; if(m == 469762049) return 3; if(m == 754974721) return 11; if(m == 998244353) return 3; return 1; } template <typename T> void butterfly(std::vector<T> &a){ int g = primitive_root(T::mod()); int n = int(a.size()); int h = ceil_pow2(n); static bool first = true; static T sum_e[30]; // sum_e[i] = ies[0] * ... * ies[i - 1] * es[i] if(first){ first = false; T es[30], ies[30]; // es[i]^(2^(2+i)) == 1 int cnt2 = bsf(T::mod() - 1); T e = T(g).pow((T::mod() - 1) >> cnt2), ie = e.inv(); for(int i = cnt2; i >= 2; i--){ // e^(2^i) == 1 es[i - 2] = e; ies[i - 2] = ie; e *= e; ie *= ie; } T now = 1; for(int i = 0; i <= cnt2 - 2; i++){ sum_e[i] = es[i] * now; now *= ies[i]; } } for(int ph = 1; ph <= h; ph++){ int w = 1 << (ph - 1), p = 1 << (h - ph); T now = 1; for(int s = 0; s < w; s++){ int offset = s << (h - ph + 1); for(int i = 0; i < p; i++){ auto l = a[i + offset]; auto r = a[i + offset + p] * now; a[i + offset] = l + r; a[i + offset + p] = l - r; } now *= sum_e[bsf(~(unsigned int) (s))]; } } } template <typename T> void butterfly_inv(std::vector<T> &a) { int g = primitive_root(T::mod()); int n = int(a.size()); int h = ceil_pow2(n); static bool first = true; static T sum_ie[30]; // sum_ie[i] = es[0] * ... * es[i - 1] * ies[i] if(first){ first = false; T es[30], ies[30]; // es[i]^(2^(2+i)) == 1 int cnt2 = bsf(T::mod() - 1); T e = T(g).pow((T::mod() - 1) >> cnt2), ie = e.inv(); for(int i = cnt2; i >= 2; i--){ // e^(2^i) == 1 es[i - 2] = e; ies[i - 2] = ie; e *= e; ie *= ie; } T now = 1; for(int i = 0; i <= cnt2 - 2; i++){ sum_ie[i] = ies[i] * now; now *= es[i]; } } for(int ph = h; ph >= 1; ph--){ int w = 1 << (ph - 1), p = 1 << (h - ph); T inow = 1; for(int s = 0; s < w; s++){ int offset = s << (h - ph + 1); for(int i = 0; i < p; i++){ auto l = a[i + offset]; auto r = a[i + offset + p]; a[i + offset] = l + r; a[i + offset + p] = (unsigned long long) (T::mod() + l.val - r.val) * inow.val; } inow *= sum_ie[bsf(~(unsigned int) (s))]; } } } template <typename T> std::vector<T> convolution(std::vector<T> a, std::vector<T> b){ int n = int(a.size()), m = int(b.size()); if(!n || !m) return {}; if(std::min(n, m) <= 60) { if(n < m) { std::swap(n, m); std::swap(a, b); } std::vector<T> ans(n + m - 1); for(int i = 0; i < n; i++){ for(int j = 0; j < m; j++){ ans[i + j] += a[i] * b[j]; } } return ans; } int z = 1 << ceil_pow2(n + m - 1); a.resize(z); butterfly(a); b.resize(z); butterfly(b); for(int i = 0; i < z; i++){ a[i] *= b[i]; } butterfly_inv(a); a.resize(n + m - 1); T iz = T(z).inv(); for(int i = 0; i < n + m - 1; i++) a[i] *= iz; return a; } template <typename T> std::vector<T> convolution_mod(const std::vector<T> &a, const std::vector<T> &b, const long long MOD){ if(MOD == 998244353){ return convolution(a, b); } constexpr long long m0 = 167772161; constexpr long long m1 = 469762049; constexpr long long m2 = 754974721; using mint0 = ModInt<m0>; using mint1 = ModInt<m1>; using mint2 = ModInt<m2>; int n = a.size(), m = b.size(); std::vector<mint0> a0(n), b0(m); std::vector<mint1> a1(n), b1(m); std::vector<mint2> a2(n), b2(m); for(int i = 0; i < n; i++){ a0[i] = a[i].val; a1[i] = a[i].val; a2[i] = a[i].val; } for(int i = 0; i < m; i++){ b0[i] = b[i].val; b1[i] = b[i].val; b2[i] = b[i].val; } auto c0 = convolution(a0, b0); auto c1 = convolution(a1, b1); auto c2 = convolution(a2, b2); std::vector<T> ret(n + m - 1); for(int i = 0; i < n + m - 1; i++){ ret[i] = CRT::garner({c0[i].val, c1[i].val, c2[i].val}, {m0, m1, m2}, MOD); } return ret; } }; #line 11 "lib/polynomial/formal_power_series.hpp" template <typename T> struct FormalPowerSeries : std::vector<T> { using std::vector<T>::vector; using FPS = FormalPowerSeries; // deg 次として初期化 FPS pre(int deg) const { FPS res(std::begin(*this), std::begin(*this) + std::min((int) this->size(), deg)); if((int) res.size() < deg) res.resize(deg, T(0)); return res; } // deg 次として反転 FPS rev(int deg = -1) const { FPS res(*this); if(deg != -1) res.resize(deg, T(0)); std::reverse(std::begin(res), std::end(res)); return res; } int notZeroCount() const { int res = 0; for(auto x : *this){ if(x != T(0)) res++; } return res; } int maxDeg() const { for(int i = (int) this->size() - 1; i >= 0; i--){ if((*this)[i] != T(0)) return i; } return -1; } void shrink() { while(this->size() && this->back() == T(0)) this->pop_back(); } std::vector<std::pair<int, T>> sparseFormat() const { std::vector<std::pair<int, T>> res; for(int i = 0; i < (int) this->size(); i++){ if((*this)[i] != T(0)) res.emplace_back(i, (*this)[i]); } return res; } FPS operator+(const T &rhs) const { return FPS(*this) += rhs; } FPS operator+(const FPS &rhs) const { return FPS(*this) += rhs; } FPS operator-(const T &rhs) const { return FPS(*this) -= rhs; } FPS operator-(const FPS &rhs) const { return FPS(*this) -= rhs; } FPS operator*(const T &rhs) const { return FPS(*this) *= rhs; } FPS operator*(const FPS &rhs) const { return FPS(*this) *= rhs; } FPS operator/(const T &rhs) const { return FPS(*this) /= rhs; } FPS operator/(const FPS &rhs) const { return FPS(*this) /= rhs; } FPS operator%(const FPS &rhs) const { return FPS(*this) %= rhs; } FPS operator-() const { FPS res(this->size()); for(int i = 0; i < (int) this->size(); i++) res[i] = -(*this)[i]; return res; } FPS &operator+=(const T &rhs){ if(this->empty()) this->resize(1); (*this)[0] += rhs; return *this; } FPS &operator-=(const T &rhs){ if(this->empty()) this->resize(1); (*this)[0] -= rhs; return *this; } FPS &operator*=(const T &rhs){ for(auto &x : *this) x *= rhs; return *this; } FPS &operator/=(const T &rhs){ for(auto &x : *this) x /= rhs; return *this; } FPS &operator+=(const FPS &rhs) noexcept { if(this->size() < rhs.size()) this->resize(rhs.size()); for(int i = 0; i < (int) rhs.size(); i++) (*this)[i] += rhs[i]; return *this; } FPS &operator-=(const FPS &rhs) noexcept { if(this->size() < rhs.size()) this->resize(rhs.size()); for(int i = 0; i < (int) rhs.size(); i++) (*this)[i] -= rhs[i]; return *this; } FPS &operator*=(const FPS &rhs) noexcept { long long len1 = this->notZeroCount(), len2 = rhs.notZeroCount(); // Sparse な場合 if(len1 * len2 <= 60LL * (long long) std::max(this->size(), rhs.size())){ std::vector<std::pair<int, T>> rhs_sparse = rhs.sparseFormat(); return *this = this->multiply_naive(rhs_sparse); } auto res = NTT::convolution_mod(*this, rhs, T::mod()); return *this = {std::begin(res), std::end(res)}; } // f/g = f * (g.inv()) FPS &operator/=(const FPS &rhs) noexcept { if(this->size() < rhs.size()) return *this = FPS(); const int n = this->size() - rhs.size() + 1; return *this = (rev().pre(n) * rhs.rev().inv(n)).pre(n).rev(n); } FPS &operator%=(const FPS &rhs) noexcept { return *this -= (*this / rhs) * rhs; } FPS operator>>(int deg) const { if((int) this->size() <= deg) return {}; FPS res(*this); res.erase(std::begin(res), std::begin(res) + deg); return res; } FPS operator<<(int deg) const { FPS res(*this); res.insert(std::begin(res), deg, T(0)); return res; } // 微分 FPS diff() const { const int n = this->size(); FPS res(std::max(0, n - 1)); for(int i = 1; i < n; i++) res[i - 1] = (*this)[i] * T(i); return res; } // 積分 FPS integral() const { const int n = this->size(); FPS res(n + 1); res[0] = T(0); for(int i = 0; i < n; i++) res[i + 1] = (*this)[i] / T(i + 1); return res; } // {lhs / rhs, lhs % rhs} std::pair<FPS, FPS> division(const FPS &rhs) const { FPS q = *this / rhs; FPS r = *this - q * rhs; q.shrink(), r.shrink(); return {q, r}; } FPS multiply_naive(const std::vector<std::pair<int, T>> &rhs, int deg = -1){ if(deg == -1) deg = this->size() + (rhs.back().first + 1) - 1; FPS res(deg, T(0)); for(auto &[i, x] : this->sparseFormat()){ for(auto &[j, y] : rhs){ if(i + j >= deg) break; res[i + j] += x * y; } } return *this = {std::begin(res), std::end(res)}; } FPS divide_naive(const std::vector<std::pair<int, T>> &rhs){ assert(!rhs.empty()); if((int) this->size() < (rhs.back().first + 1)) return FPS(); auto [i0, x0] = rhs[0]; assert(i0 == 0 && x0 != T(0)); T x0_inv = T(1) / x0; for(int i = 0; i < (int) this->size(); i++){ for(int i2 = 1; i2 < (int) rhs.size(); i2++){ auto &[j, y] = rhs[i2]; if(i < j) break; (*this)[i] -= (*this)[i - j] * y; } (*this)[i] *= x0_inv; } return *this; } // fg = 1 (mod x^n) となる g FPS inv(int deg = -1) const { assert((*this)[0] != T(0)); if(deg == -1) deg = this->size(); // g_p mod x^k から g mod x^2k を求める // (g - g_p)^2 = g^2 - 2 g g_p + (g_p)^2 = 0 (mod x^2k) // fg^2 - 2fg g_p + f (g_p)^2 // = g - 2(g_p) + f (g_p)^2 = 0 (mod x^2k) // g = 2(g_p) - f (g_p)^2 (mod x^2k) FPS res({T(1) / (*this)[0]}); for(int i = 1; i < deg; i <<= 1) { res = (res + res - res * res * pre(i << 1)).pre(i << 1); } return res.pre(deg); } // g = log f となる g FPS log(int deg = -1) const { assert((*this)[0] == T(1)); if(deg == -1) deg = this->size(); // log f = integral((f' / f) dx) return (this->diff() * this->inv(deg)).pre(deg - 1).integral().pre(deg); } // g = exp(f) となる g FPS exp(int deg = -1) const { assert((*this)[0] == T(0)); if(deg == -1) deg = this->size(); // g_p mod x^k から g mod x^2k をニュートン法で求める // log g = f (mod x^n) であるから、 // g = g_p - (log g_p - f)/(log' g_p) // = g_p(1 - log g_p + f) (mod x^2k) FPS res({T(1)}); for(int i = 1; i < deg; i <<= 1) { res = (res * (-res.log(i << 1) + pre(i << 1) + T(1))).pre(i << 1); } return res.pre(deg); } // g = f^k となる g FPS pow(long long k, int deg = -1) const { if(deg == -1) deg = this->size(); if(k == 0){ FPS res(deg, T(0)); res[0] = T(1); return res; } // f^k = exp(log f)^k = exp(k log f) // log を計算するのに定数項が 1 である必要があるので調整する // 最も低次の項を a x^i として、(f / (a x^i))^k を計算してから (a x^i)^k を掛ける for(int i = 0; i < (int) this->size(); i++){ if(k * i > deg) return FPS(deg, T(0)); if((*this)[i] != T(0)){ T inv_i = T(1) / (*this)[i]; FPS res = ((((*this) * inv_i) >> i).log(deg) * k).exp(deg) * ((*this)[i].pow(k)); res = (res << (k * i)).pre(deg); return res; } } return *this; } long long sqrtT(const T a) const { const long long p = T::mod(); if(a == T(0) || a == T(1)) return a.val; if(a.pow((p - 1) / 2) != T(1)) return -1LL; T b = 1; while(b.pow((p - 1) / 2) == 1) b++; // p - 1 = m 2^e long long m = p - 1; int e = 0; while(m % 2 == 0) m >>= 1, e++; // x = a^((m + 1) / 2) (mod p) T x = a.pow((m - 1) / 2); // y = a^{-1} x^2 (mod p) T y = (a * x) * x; x *= a; T z = b.pow(m); while(y != 1){ int j = 0; T t = y; while(t != 1){ t *= t; j++; } z = z.pow(1LL << (e - j - 1)); x *= z; z *= z; y *= z; e = j; } return x.val; } // g^2 = f となる g FPS sqrt(int deg = -1) const { if(this->empty()) return {}; if(deg == -1) deg = this->size(); // inv を計算するのに定数項が非零である必要があるので調整する if((*this)[0] == T(0)){ for(int i = 1; i < (int) this->size(); i++){ if((*this)[i] == T(0)) continue; if(i & 1) return {}; FPS res = (*this >> i).sqrt(); if(res.empty()) return {}; res = res.pre(deg - i / 2) << (i / 2); return res; } FPS res(deg, T(0)); return res; } // g_p mod x^k から g mod x^2k をニュートン法で求める // g^2 = f (mod x^n) であるから、 // g = g_p - ((g_p)^2 - f)/((g_p^2)') // = g_p - ((g_p)^2 - f)/(2 g_p) // = 1/2 * (g_p + f/g_p (mod x^2k) long long sqrt0 = sqrtT((*this)[0]); if(sqrt0 == -1) return {}; FPS res({T(sqrt0)}); T inv2 = T(1) / T(2); for(int i = 1; i < deg; i <<= 1) { res = (res + pre(i << 1) * res.inv(i << 1)) * inv2; } return res.pre(deg); } }; #line 11 "lib/polynomial/bostan_mori.hpp" // [x^n] f(x)/g(x) : O(d log d log n) template <typename T> T bostan_mori(long long n, FormalPowerSeries<T> f, FormalPowerSeries<T> g){ using FPS = FormalPowerSeries<T>; assert(n >= 0); g.shrink(); assert(!g.empty()); { int h = 0; while(g[h] == T(0)) h++; g.erase(g.begin(), g.begin() + h); n += h; } if((int) g.size() == 1){ return ((int) f.size() > n) ? f[n] / g[0] : T(0); } while(n > 0){ FPS tmp_g = g; for(int i = 1; i < (int) g.size(); i += 2){ tmp_g[i] *= -1; } FPS u = f * tmp_g; for(int i = 0; i < (int) f.size(); i++){ f[i] = u[i * 2 + n % 2]; } f.resize(((int) u.size() + 1 - (n % 2)) / 2); tmp_g *= g; for(int i = 0; i < (int) g.size(); i++){ g[i] = tmp_g[i * 2]; } n >>= 1; } return f[0] / g[0]; } // a_i = sum_{j = 1}^{d} a_{i - j} * c[j] を満たす数列の k (0-indexed) 番目の項を求める template <typename T> T findKthTerm(const std::vector<T> &init, const std::vector<T> &c, long long k){ using FPS = FormalPowerSeries<T>; assert((int) init.size() + 1 == (int) c.size()); FPS f(init.size()), g(c.size()); for(int i = 0; i < (int) init.size(); i++){ f[i] = init[i]; } g[0] = 1; for(int i = 1; i < (int) c.size(); i++){ g[i] = c[i] * T(-1); } f *= g; f.resize(init.size()); return bostan_mori(k, f, g); } using mint = ModInt<MOD>; ll T; void input(){ in(T); } using FPS = FormalPowerSeries<mint>; void solve(){ ll n, q; in(n, q); FPS a(n); rep(i, n) in(a[i]); while(q--){ ll t; in(t); if(t == 1){ ll k, x; in(k, x); FPS f = {mint(1), mint(-k)}; a *= f.pow(x, n).inv(n); a.resize(n); }else{ ll x; in(x); x--; out(a[x]); } } } int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(20); T = 1; // input(); while(T--) solve(); }