#include using namespace std; typedef long long ll; typedef pair p_ll; template void debug(T itr1, T itr2) { auto now = itr1; while(now=0; i--) const ll MOD = 998244353; const ll LLINF = pow(2,61)-1; const int INF = pow(2,30)-1; vector fac; void c_fac(int x=pow(10,6)+10) { fac.resize(x,true); rep(i,x) fac[i] = i ? (fac[i-1]*i)%MOD : 1; } ll modpow(ll x, ll p) { ll result = 1, now = 1, pm = x; while (now<=p) { if (p&now) { result = result * pm % MOD; } now*=2; pm = pm*pm % MOD; } return result; } ll inv(ll a, ll m=MOD) { ll b = m, x = 1, y = 0; while (b!=0) { int d = a/b; a -= b*d; swap(a,b); x -= y*d; swap(x,y); } return (x+m)%m; } ll nck(ll n, ll k) { return fac[n]*inv(fac[k]*fac[n-k]%MOD)%MOD; } ll gcd(ll a, ll b) { if (a theta; FastNumberTheoreticTransform(ll N=20) { size = 1< &v1, vector &v2) { size_v12 = v1.size() + v2.size() - 1; vsize = 0; while ((1<>vsize; } vector convolution(vector &x, bool rev, ll depth=0, ll pos=0) { if (depth==vsize) return {pos ex = convolution(x,rev,depth+1,pos); vector ox = convolution(x,rev,depth+1,pos+(1< result(N); rep(i,N) result[i] = (ex[i%(N/2)] + theta[base*(1< mul(ll N, vector &v1, vector &v2) { set(v1, v2); vector cv1 = convolution(v1, false), cv2 = convolution(v2, false); vector cv12(1< v12 = convolution(cv12, true); v12.resize(N); return v12; } }; // ---------------------------------------------------------------------- // ---------------------------------------------------------------------- int main() { ll N; cin >> N; c_fac(); vector kei(N); rep(i,N) kei[i] = (i+1)*inv(fac[i])%MOD; // debug(all(kei)); FastNumberTheoreticTransform fntt; vector result(N,0); result[0] = 1; ll np = 1; while (np<=N) { if (np&N) result = fntt.mul(N,result,kei); kei = fntt.mul(N,kei,kei); np<<=1; } ll ho = fac[N-2] * inv(modpow(N,N-2)) % MOD; rep(i,N) result[i] = result[i] * ho % MOD; // debug(all(result)); cout << result[N-2] << endl; return 0; }