#line 1 "d.cpp" #include using namespace std; using ll=long long; const ll ILL=2167167167167167167; const int INF=2100000000; #define rep(i,a,b) for (int i=(int)(a);i<(int)(b);i++) #define all(p) p.begin(),p.end() template using pq_ = priority_queue, greater>; template int LB(vector &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();} template int UB(vector &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();} template bool chmin(T &a,T b){if(b bool chmax(T &a,T b){if(a void So(vector &v) {sort(v.begin(),v.end());} template void Sore(vector &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});} bool yneos(bool a,bool upp=false){if(a){cout<<(upp?"YES\n":"Yes\n");}else{cout<<(upp?"NO\n":"No\n");}return a;} template void vec_out(vector &p,int ty=0){ if(ty==2){cout<<'{';for(int i=0;i<(int)p.size();i++){if(i){cout<<",";}cout<<'"'< T vec_min(vector &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;} template T vec_max(vector &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;} template T vec_sum(vector &a){T ans=T(0);for(auto &x:a) ans+=x;return ans;} int pop_count(long long a){int res=0;while(a){res+=(int)(a&1),a>>=1;}return res;} template T square(T a){return a * a;} #line 3 "/Users/Shared/po167_library/fps/FPS_Product_Sequence.hpp" #include namespace po167{ template std::vector FPS_Product_Sequence(std::vector> f){ if (f.empty()) return {1}; auto op = [&](auto self,int l, int r) -> std::vector { if (l + 1 == r) return f[l]; int m = (l + r) / 2; return atcoder::convolution(self(self, l, m), self(self, m, r)); }; return op(op, 0, f.size()); } } #line 4 "/Users/Shared/po167_library/fps/FPS_inv.hpp" namespace po167{ // return 1 / f template std::vector FPS_inv(std::vector f, int len = -1){ if (len == -1) len = f.size(); assert(f[0] != 0); std::vector g = {1 / f[0]}; int s = 1; while(s < len){ // g = 2g_s - f(g_s)^2 (mod x ^ (2 * s)) // g = g - (fg - 1)g // (fg - 1) = 0 (mod x ^ (s)) std::vector n_g(s * 2, 0); std::vector f_s(s * 2, 0); g.resize(s * 2); for (int i = 0; i < s * 2; i++){ if (int(f.size()) > i) f_s[i] = f[i]; n_g[i] = g[i]; } atcoder::internal::butterfly(g); atcoder::internal::butterfly(f_s); for (int i = 0; i < s * 2; i++){ f_s[i] *= g[i]; } atcoder::internal::butterfly_inv(f_s); T iz = 1 / (T)(s * 2); for (int i = s; i < s * 2; i++){ f_s[i] *= iz; } for (int i = 0; i < s; i++){ f_s[i] = 0; } atcoder::internal::butterfly(f_s); for (int i = 0; i < s * 2; i++){ f_s[i] *= g[i]; } atcoder::internal::butterfly_inv(f_s); for (int i = s; i < s * 2; i++){ n_g[i] -= f_s[i] * iz; } std::swap(n_g, g); s *= 2; } g.resize(len); return g; } } #line 5 "/Users/Shared/po167_library/fps/Multipoint_Evaluation.hpp" namespace po167{ // return {f(p[0]), f(p[1]), f(p[2]), ... } // https://codeforces.com/blog/entry/100279 template std::vector Multipoint_Evaluation(std::vector f, std::vector p){ std::reverse(f.begin(), f.end()); int M = f.size(); int N = p.size(); std::vector> g(N); for (int i = 0; i < N; i++){ g[i] = {1, p[i] * -1}; } auto tmp = po167::FPS_Product_Sequence(g); tmp = po167::FPS_inv(tmp, M); tmp = atcoder::convolution(tmp, f); tmp.resize(M); int size = 1; while (size < N) size *= 2; std::vector> seg(size * 2, {1}); for (int i = 0; i < N; i++){ seg[i + size] = g[i]; } for (int i = size - 1; i > 0; i--){ seg[i] = atcoder::convolution(seg[i * 2], seg[i * 2 + 1]); } std::vector inv = {1, (T)(1) / (T)(2)}; // a, b の convolution のうち、l, r の間だけ欲しい auto calc = [&](std::vector a, std::vector b, int l, int r) -> std::vector { if (l == r) return {}; if (l < 0) l = 0; while ((int)a.size() > r) a.pop_back(); while ((int)b.size() > r) b.pop_back(); int lim = (int)a.size() + (int)b.size() - 1; lim -= std::min(lim - r, l); int z = 0; while ((1 << z) < lim) z++; a.resize((1 << z), 0); b.resize((1 << z), 0); atcoder::internal::butterfly(a); atcoder::internal::butterfly(b); for (int i = 0; i < (1 << z); i++) a[i] *= b[i]; atcoder::internal::butterfly_inv(a); while ((int)inv.size() <= z){ inv.push_back(inv.back() * inv[1]); } std::vector d(r - l); for (int i = l; i < r; i++) d[i - l] = a[i] * inv[z]; return d; }; std::vector res(N); auto rec = [&](auto self, int ind, std::vector v) -> void { if ((int)seg[ind].size() == 1){ return; } if (size <= ind){ res[ind - size] = v.back(); return; } self(self, ind * 2, calc(v, seg[ind * 2 + 1], (int)(v.size() - seg[ind * 2].size() + 1) ,(int)v.size())); self(self, ind * 2 + 1, calc(v, seg[ind * 2], (int)(v.size() - seg[ind * 2 + 1].size() + 1) ,(int)v.size())); }; rec(rec, 1, tmp); return res; } } #line 3 "/Users/Shared/po167_library/fps/FPS_add.hpp" namespace po167{ template // a(x) += b(x) * c * x^d void FPS_add(std::vector &a, std::vector b, T c = 1, int d = 0){ for (int i = 0; i < (int)(b.size()); i++){ while ((int)a.size() <= i + d) a.push_back((T)0); a[i + d] += b[i] * c; } } } #line 5 "/Users/Shared/po167_library/fps/Polynomial_Interpolation.hpp" namespace po167{ template // ラグランジュの多項式補完 // f(X[i]) = Y[i] である f を返す std::vector Polynomial_Interpolation(std::vector X, std::vector Y){ int N = X.size(); assert(Y.size() == X.size()); if (N == 0) return {}; { auto Z = X; std::sort(Z.begin(), Z.end()); for (int i = 0; i < N - 1; i++){ assert(Z[i] != Z[i + 1]); } } std::vector> p(N); for (int i = 0; i < N; i++) p[i] = {-X[i], 1}; auto g = FPS_Product_Sequence(p); for (int i = 0; i < N; i++){ g[i] = g[i + 1] * (i + 1); } g.pop_back(); std::vector xt(N); for (int i = 0; i < N; i++) xt[i] = X[i]; auto Z = Multipoint_Evaluation(g, xt); std::vector inv = {1, (T)(1) / (T)(2)}; auto rec = [&](auto self, int l, int r) -> std::pair, std::vector> { if (l + 1 == r){ return {{Y[l] / Z[l]}, {-X[l], 1}}; } int m = (l + r) / 2; auto [Lf, Ls] = self(self, l, m); auto [Rf, Rs] = self(self, m, r); int mx_size = r - l + 1; if (mx_size < 128){ auto D = atcoder::convolution(Ls, Rs); auto U = atcoder::convolution(Ls, Rf); FPS_add(U, atcoder::convolution(Lf, Rs)); return {U, D}; } int z = 0; while ((1 << z) < mx_size) z++; while (int(inv.size()) <= z) inv.push_back(inv.back() * inv[1]); Lf.resize(1 << z, 0); Ls.resize(1 << z, 0); Rf.resize(1 << z, 0); Rs.resize(1 << z, 0); atcoder::internal::butterfly(Lf); atcoder::internal::butterfly(Ls); atcoder::internal::butterfly(Rf); atcoder::internal::butterfly(Rs); std::vector D(1 << z), U(1 << z); for (int i = 0; i < (1 << z); i++){ D[i] = Ls[i] * Rs[i] * inv[z]; U[i] = (Ls[i] * Rf[i] + Lf[i] * Rs[i]) * inv[z]; } atcoder::internal::butterfly_inv(D); atcoder::internal::butterfly_inv(U); D.resize(r - l + 1); U.resize(r - l); return {U, D}; }; return rec(rec, 0, N).first; } } #line 26 "d.cpp" using mint = atcoder::modint998244353; #line 2 "/Users/Shared/po167_library/math/Binomial.hpp" #line 5 "/Users/Shared/po167_library/math/Binomial.hpp" namespace po167{ template struct Binomial{ std::vector fact_vec, fact_inv_vec; void extend(int m = -1){ int n = fact_vec.size(); if (m == -1) m = n * 2; if (n >= m) return; fact_vec.resize(m); fact_inv_vec.resize(m); for (int i = n; i < m; i++){ fact_vec[i] = fact_vec[i - 1] * T(i); } fact_inv_vec[m - 1] = T(1) / fact_vec[m - 1]; for (int i = m - 1; i > n; i--){ fact_inv_vec[i - 1] = fact_inv_vec[i] * T(i); } } Binomial(int MAX = 0){ fact_vec.resize(1, T(1)); fact_inv_vec.resize(1, T(1)); extend(MAX + 1); } T fact(int i){ if (i < 0) return 0; while (int(fact_vec.size()) <= i) extend(); return fact_vec[i]; } T invfact(int i){ if (i < 0) return 0; while (int(fact_inv_vec.size()) <= i) extend(); return fact_inv_vec[i]; } T C(int a, int b){ if (a < b || b < 0) return 0; return fact(a) * invfact(b) * invfact(a - b); } T invC(int a, int b){ if (a < b || b < 0) return 0; return fact(b) * fact(a - b) *invfact(a); } T P(int a, int b){ if (a < b || b < 0) return 0; return fact(a) * invfact(a - b); } T inv(int a){ if (a < 0) return inv(-a) * T(-1); if (a == 0) return 1; return fact(a - 1) * invfact(a); } T Catalan(int n){ if (n < 0) return 0; return fact(2 * n) * invfact(n + 1) * invfact(n); } T narayana(int n, int k){ if (n <= 0 || n < k || k < 1) return 0; return C(n, k) * C(n, k - 1) * inv(n); } T Catalan_pow(int n,int d){ if (n < 0 || d < 0) return 0; if (d == 0){ if (n == 0) return 1; return 0; } return T(d) * inv(d + n) * C(2 * n + d - 1, n); } // retrun [x^a] 1/(1-x)^b T ruiseki(int a,int b){ if (a < 0 || b < 0) return 0; if (a == 0){ return 1; } return C(a + b - 1, b - 1); } // (a, b) -> (c, d) // always x + e >= y T mirror(int a, int b, int c, int d, int e = 0){ if (a + e < b || c + e < d) return 0; if (a > c || b > d) return 0; a += e; c += e; return C(c + d - a - b, c - a) - C(c + d - a - b, c - b + 1); } // return sum_{i = 0, ... , a} sum_{j = 0, ... , b} C(i + j, i) // return C(a + b + 2, a + 1) - 1; T gird_sum(int a, int b){ if (a < 0 || b < 0) return 0; return C(a + b + 2, a + 1) - 1; } // return sum_{i = a, ..., b - 1} sum_{j = c, ... , d - 1} C(i + j, i) // AGC 018 E T gird_sum_2(int a, int b, int c, int d){ if (a >= b || c >= d) return 0; a--, b--, c--, d--; return gird_sum(a, c) - gird_sum(a, d) - gird_sum(b, c) + gird_sum(b, d); } // the number of diagonal dissections of a convex n-gon into k+1 regions. // OEIS A033282 // AGC065D T diagonal(int n, int k){ if (n <= 2 || n - 3 < k || k < 0) return 0; return C(n - 3, k) * C(n + k - 1, k) * inv(k + 1); } }; } #line 28 "d.cpp" void solve(); // DEAR MYSTERIES / TOMOO int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int t = 1; // cin >> t; rep(i, 0, t) solve(); } void solve(){ ll N; cin >> N; vector> p; rep(k, 3, 61) { rep(v, 2, INF) { __int128_t tmp = 1; rep(rp, 0, k) tmp *= v; if (tmp > N) break; p.push_back({tmp, k}); } } N++; po167::Binomial table; vector now_val(66, 1); mint tmp = 1, ans = 0; auto f = [&](ll l, ll r) -> mint { mint res = 1; res *= r - l; res *= (r + l - 1); res *= table.inv(2); return res; }; const int L = 6; vector base(L); { vector X(L); vector Y(L); rep(i, 1, L) { X[i] = i; Y[i] = Y[i - 1] + f(i * i, (i + 1) * (i + 1)) * i; } base = po167::Polynomial_Interpolation(X, Y); // cout << base.size() << endl; } auto g = [&](ll r) -> mint { ll l_val = 1, r_val = INF; while (r_val - l_val > 1) { ll mid = (l_val + r_val) / 2; if (mid * mid <= r) l_val = mid; else r_val = mid; } mint res = 0; { mint tmpG = 1; rep(i, 0, L) { res += base[i] * tmpG; tmpG *= l_val - 1; } } res += f(l_val * l_val, r) * l_val; // cout << r << " " << l_val << " " << res.val() << endl; return res; }; So(p); p.push_back({N, 1}); ll l = 1; for (auto [a, id] : p) { ans += tmp * (g(a) - g(l)); // cout << l << " " << a << " " << tmp.val() << "\n"; l = a; tmp *= table.inv(now_val[id]); tmp *= now_val[id] + 1; now_val[id]++; } cout << ans.val() << "\n"; } /* * * k >= 3 を全て列挙する * そうすると、境目ができて、 * その中で、1 <= k <= 2 バージョンが解ければいいということになる * 結局 1 <= k <= 2 の場合を高速に解ければいい * sqrt(x) = y の範囲だと? * y * (y ^2 + (y + 1)^2 - 1) * (2 * y - 1) / 2 * y * (y^2 + y) * (2*y - 1) * これのアレなので、 * yosupo judge にだした問題になる * なんで整備していないのかな? * 多項式補完します() */