#include #include using namespace std; using namespace atcoder; typedef modint998244353 mint; typedef long long ll; // shobonfps // code from: https://opt-cp.com/fps-implementation/ // but replaced "rep, drep" to "for" template struct FormalPowerSeries : vector { using vector::vector; using vector::operator=; using F = FormalPowerSeries; F operator-() const { F res(*this); for (auto &e : res) e = -e; return res; } F &operator*=(const T &g) { for (auto &e : *this) e *= g; return *this; } F &operator/=(const T &g) { assert(g != T(0)); *this *= g.inv(); return *this; } F &operator+=(const F &g) { int n = (*this).size(), m = g.size(); for(int i=0; i>=(const int d) { int n = (*this).size(); (*this).erase((*this).begin(), (*this).begin() + min(n, d)); (*this).resize(n); return *this; } F inv(int d = -1) const { int n = (*this).size(); assert(n != 0 && (*this)[0] != 0); if (d == -1) d = n; assert(d > 0); F res{(*this)[0].inv()}; while (res.size() < d) { int m = size(res); F f(begin(*this), begin(*this) + min(n, 2*m)); F r(res); f.resize(2*m), internal::butterfly(f); r.resize(2*m), internal::butterfly(r); for(int i=0; i<2*m; i++) f[i] *= r[i]; internal::butterfly_inv(f); f.erase(f.begin(), f.begin() + m); f.resize(2*m), internal::butterfly(f); for(int i=0; i<2*m; i++) f[i] *= r[i]; internal::butterfly_inv(f); T iz = T(2*m).inv(); iz *= -iz; for(int i=0; i=0; i--) { // (*this)[i] *= g[0]; // for(int j=1; j> g) { int n = (*this).size(); auto [d, c] = g.front(); if (d == 0) g.erase(g.begin()); else c = 0; for(int i=n-1; i>=0; i--) { (*this)[i] *= c; for (auto &[j, b] : g) { if (j > i) break; (*this)[i] += (*this)[i-j] * b; } } return *this; } F &operator/=(vector> g) { int n = (*this).size(); auto [d, c] = g.front(); assert(d == 0 && c != T(0)); T ic = c.inv(); g.erase(g.begin()); for(int i=0; i i) break; (*this)[i] -= (*this)[i-j] * b; } (*this)[i] *= ic; } return *this; } // multiply and divide (1 + cz^d) void multiply(const int d, const T c) { int n = (*this).size(); if (c == T(1)) for(int i=n-d-1; i>=0; i--) (*this)[i+d] += (*this)[i]; else if (c == T(-1)) for(int i=n-d-1; i>=0; i--) (*this)[i+d] -= (*this)[i]; else for(int i=n-d-1; i>=0; i--) (*this)[i+d] += (*this)[i] * c; } void divide(const int d, const T c) { int n = (*this).size(); if (c == T(1)) for(int i=0; i>(const int d) const { return F(*this) >>= d; } F operator*(const F &g) const { return F(*this) *= g; } F operator/(const F &g) const { return F(*this) /= g; } F operator*(vector> g) const { return F(*this) *= g; } F operator/(vector> g) const { return F(*this) /= g; } }; typedef FormalPowerSeries fps; typedef vector> sfps; //-------- //defmodfact const int COMinitMAX = 200000; mint fact[COMinitMAX+1], factinv[COMinitMAX+1]; void modfact(){ fact[0] = 1; for (int i=1; i<=COMinitMAX; i++){ fact[i] = fact[i-1] * i; } factinv[COMinitMAX] = fact[COMinitMAX].inv(); for (int i=COMinitMAX-1; i>=0; i--){ factinv[i] = factinv[i+1] * (i+1); } } mint cmb(int a, int b){ if (a> N; vector A(N); for (int i=0; i> A[i]; } mint ans = 0; mint nnv = mint(2).pow(N-1); vector Q(10001); int asum = 0; for (int i=0; i> A[i]; ans += nnv * A[i]; Q[A[i]] += 1; asum += A[i]; } if (asum >= 999630629){ int l = asum - 999630629 + 1; fps F(l); fps G(l); F[0] = 1; for (int i=1; i 1){ for (int j=0; j