#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 k<0||k>n ? 0 : fac[n]*inv(fac[k]*fac[n-k]%MOD)%MOD; } ll gcd(ll a, ll b) { if (a pos; SegTree(ll N) { size = 1; while(size>=1) operate(x); } ll query(ll a, ll b) { ll L = 0, R = 0; for (a+=size, b+=size; a>=1, b>>=1) { if (a&1) { L = q(L,pos[a]); a++; } if (b&1) { b--; R = q(pos[b],R); } } return q(L,R); } void operate(ll i) { pos[i] = q(pos[i*2], pos[i*2+1]); } ll q(ll x, ll y) { return x + y; } }; // ---------------------------------------------------------------------- // ---------------------------------------------------------------------- vector zaatsu(vector &list) { map num; for (auto x: list) num[x]++; ll p = 0; for (auto x: num) { num[x.first] = p; p++; } vector result; for (auto x: list) result.push_back(num[x]); return result; } // ---------------------------------------------------------------------- // ---------------------------------------------------------------------- int main() { ll N; cin >> N; vector A(N); rep(i,N) cin >> A[i]; A = zaatsu(A); // debug(all(A)); SegTree st(N); ll ten = 0; rep(i,N) { ten += st.query(A[i]+1,N); st.update(A[i],st[A[i]]+1); } ll later = 0; rep(i,N) later = (later+st[i]*st.query(i+1,N)) % MOD; // cout << ten << " " << later << endl; c_fac(); ll allc = 1; rep(i,N) allc = allc * nck(N,i+1) % MOD; ll invn2 = modpow(inv(N),2); ll res1 = 0, res2 = 0; rep(i,N) { ll c1 = i+1, c2 = (i+2+N)*(N-(i+1))/2; res1 = (res1+allc*invn2%MOD*c1%MOD*c2%MOD*later%MOD) % MOD; res2 = (res2+allc*inv(nck(N,i+1))%MOD*nck(N-2,i-1)%MOD*ten%MOD) % MOD; } ll result = (res1+res2) % MOD; cout << result << endl; return 0; }