結果
問題 | No.1303 Inconvenient Kingdom |
ユーザー | tokusakurai |
提出日時 | 2022-09-04 10:39:04 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 125 ms / 3,000 ms |
コード長 | 27,632 bytes |
コンパイル時間 | 3,662 ms |
コンパイル使用メモリ | 240,928 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-18 12:34:20 |
合計ジャッジ時間 | 6,128 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,816 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,820 KB |
testcase_07 | AC | 2 ms
6,816 KB |
testcase_08 | AC | 3 ms
6,820 KB |
testcase_09 | AC | 84 ms
6,820 KB |
testcase_10 | AC | 83 ms
6,816 KB |
testcase_11 | AC | 112 ms
6,816 KB |
testcase_12 | AC | 110 ms
6,820 KB |
testcase_13 | AC | 117 ms
6,816 KB |
testcase_14 | AC | 125 ms
6,820 KB |
testcase_15 | AC | 124 ms
6,816 KB |
testcase_16 | AC | 124 ms
6,816 KB |
testcase_17 | AC | 123 ms
6,820 KB |
testcase_18 | AC | 17 ms
6,816 KB |
testcase_19 | AC | 17 ms
6,816 KB |
testcase_20 | AC | 17 ms
6,816 KB |
testcase_21 | AC | 55 ms
6,816 KB |
testcase_22 | AC | 91 ms
6,820 KB |
testcase_23 | AC | 123 ms
6,816 KB |
testcase_24 | AC | 124 ms
6,820 KB |
testcase_25 | AC | 123 ms
6,820 KB |
testcase_26 | AC | 2 ms
6,820 KB |
testcase_27 | AC | 2 ms
6,816 KB |
testcase_28 | AC | 2 ms
6,820 KB |
testcase_29 | AC | 2 ms
6,816 KB |
testcase_30 | AC | 2 ms
6,820 KB |
testcase_31 | AC | 2 ms
6,820 KB |
testcase_32 | AC | 1 ms
6,820 KB |
testcase_33 | AC | 2 ms
6,816 KB |
testcase_34 | AC | 2 ms
6,816 KB |
testcase_35 | AC | 2 ms
6,816 KB |
testcase_36 | AC | 1 ms
6,820 KB |
testcase_37 | AC | 2 ms
6,820 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < (n); i++) #define per(i, n) for (int i = (n)-1; i >= 0; i--) #define rep2(i, l, r) for (int i = (l); i < (r); i++) #define per2(i, l, r) for (int i = (r)-1; i >= (l); i--) #define each(e, v) for (auto &e : v) #define MM << " " << #define pb push_back #define eb emplace_back #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; template <typename T> using minheap = priority_queue<T, vector<T>, greater<T>>; template <typename T> using maxheap = priority_queue<T>; template <typename T> bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template <typename T> bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template <typename T> int flg(T x, int i) { return (x >> i) & 1; } template <typename T> void print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } template <typename T> void printn(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template <typename T> int lb(const vector<T> &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T> &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T> &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template <typename T> vector<int> id_sort(const vector<T> &v, bool greater = false) { int n = v.size(); vector<int> ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } template <typename S, typename T> pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first + q.first, p.second + q.second); } template <typename S, typename T> pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first - q.first, p.second - q.second); } template <typename S, typename T> istream &operator>>(istream &is, pair<S, T> &p) { S a; T b; is >> a >> b; p = make_pair(a, b); return is; } template <typename S, typename T> ostream &operator<<(ostream &os, const pair<S, T> &p) { return os << p.first << ' ' << p.second; } struct io_setup { io_setup() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); } } io_setup; const int inf = (1 << 30) - 1; const ll INF = (1LL << 60) - 1; // const int MOD = 1000000007; const int MOD = 998244353; template <int mod> struct Mod_Int { int x; Mod_Int() : x(0) {} Mod_Int(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} static int get_mod() { return mod; } Mod_Int &operator+=(const Mod_Int &p) { if ((x += p.x) >= mod) x -= mod; return *this; } Mod_Int &operator-=(const Mod_Int &p) { if ((x += mod - p.x) >= mod) x -= mod; return *this; } Mod_Int &operator*=(const Mod_Int &p) { x = (int)(1LL * x * p.x % mod); return *this; } Mod_Int &operator/=(const Mod_Int &p) { *this *= p.inverse(); return *this; } Mod_Int &operator++() { return *this += Mod_Int(1); } Mod_Int operator++(int) { Mod_Int tmp = *this; ++*this; return tmp; } Mod_Int &operator--() { return *this -= Mod_Int(1); } Mod_Int operator--(int) { Mod_Int tmp = *this; --*this; return tmp; } Mod_Int operator-() const { return Mod_Int(-x); } Mod_Int operator+(const Mod_Int &p) const { return Mod_Int(*this) += p; } Mod_Int operator-(const Mod_Int &p) const { return Mod_Int(*this) -= p; } Mod_Int operator*(const Mod_Int &p) const { return Mod_Int(*this) *= p; } Mod_Int operator/(const Mod_Int &p) const { return Mod_Int(*this) /= p; } bool operator==(const Mod_Int &p) const { return x == p.x; } bool operator!=(const Mod_Int &p) const { return x != p.x; } Mod_Int inverse() const { assert(*this != Mod_Int(0)); return pow(mod - 2); } Mod_Int pow(long long k) const { Mod_Int now = *this, ret = 1; for (; k > 0; k >>= 1, now *= now) { if (k & 1) ret *= now; } return ret; } friend ostream &operator<<(ostream &os, const Mod_Int &p) { return os << p.x; } friend istream &operator>>(istream &is, Mod_Int &p) { long long a; is >> a; p = Mod_Int<mod>(a); return is; } }; using mint = Mod_Int<MOD>; template <typename T> struct Matrix { vector<vector<T>> A; Matrix(int m, int n) : A(m, vector<T>(n, 0)) {} int height() const { return A.size(); } int width() const { return A.front().size(); } inline const vector<T> &operator[](int k) const { return A[k]; } inline vector<T> &operator[](int k) { return A[k]; } static Matrix I(int l) { Matrix ret(l, l); for (int i = 0; i < l; i++) ret[i][i] = 1; return ret; } Matrix &operator*=(const Matrix &B) { int m = height(), n = width(), p = B.width(); assert(n == B.height()); Matrix ret(m, p); for (int i = 0; i < m; i++) { for (int k = 0; k < n; k++) { for (int j = 0; j < p; j++) ret[i][j] += A[i][k] * B[k][j]; } } swap(A, ret.A); return *this; } Matrix operator*(const Matrix &B) const { return Matrix(*this) *= B; } Matrix pow(long long k) const { int m = height(), n = width(); assert(m == n); Matrix now = *this, ret = I(n); for (; k > 0; k >>= 1, now *= now) { if (k & 1) ret *= now; } return ret; } bool eq(const T &a, const T &b) const { return a == b; // return abs(a-b) <= EPS; } pair<int, T> row_reduction(vector<T> &b) { // 行基本変形を用いて簡約化を行い、(rank, det) の組を返す int m = height(), n = width(), check = 0, rank = 0; T det = 1; assert(b.size() == m); for (int j = 0; j < n; j++) { int pivot = check; for (int i = check; i < m; i++) { if (A[i][j] != 0) pivot = i; // if(abs(A[i][j]) > abs(A[pivot][j])) pivot = i; // T が小数の場合はこちら } if (check != pivot) det *= T(-1); swap(A[check], A[pivot]), swap(b[check], b[pivot]); if (eq(A[check][j], T(0))) { det = T(0); continue; } rank++; det *= A[check][j]; T r = T(1) / A[check][j]; for (int k = j + 1; k < n; k++) A[check][k] *= r; b[check] *= r; A[check][j] = T(1); for (int i = 0; i < m; i++) { if (i == check) continue; if (!eq(A[i][j], 0)) { for (int k = j + 1; k < n; k++) A[i][k] -= A[i][j] * A[check][k]; b[i] -= A[i][j] * b[check]; } A[i][j] = T(0); } if (++check == m) break; } return make_pair(rank, det); } pair<int, T> row_reduction() { vector<T> b(height(), T(0)); return row_reduction(b); } Matrix inverse() { // 行基本変形によって正方行列の逆行列を求める if (height() != width()) return Matrix(0, 0); int n = height(); Matrix ret = I(n); for (int j = 0; j < n; j++) { int pivot = j; for (int i = j; i < n; i++) { if (A[i][j] != 0) pivot = i; // if(abs(A[i][j]) > abs(A[pivot][j])) pivot = i; // T が小数の場合はこちら } swap(A[j], A[pivot]), swap(ret[j], ret[pivot]); if (eq(A[j][j], T(0))) return Matrix(0, 0); T r = T(1) / A[j][j]; for (int k = j + 1; k < n; k++) A[j][k] *= r; for (int k = 0; k < n; k++) ret[j][k] *= r; A[j][j] = T(1); for (int i = 0; i < n; i++) { if (i == j) continue; if (!eq(A[i][j], T(0))) { for (int k = j + 1; k < n; k++) A[i][k] -= A[i][j] * A[j][k]; for (int k = 0; k < n; k++) ret[i][k] -= A[i][j] * ret[j][k]; } A[i][j] = T(0); } } return ret; } vector<vector<T>> Gausiann_elimination(vector<T> b) { // Ax = b の解の 1 つと解空間の基底の組を返す int m = height(), n = width(); row_reduction(b); vector<vector<T>> ret; vector<int> p(m, n); vector<bool> is_zero(n, true); for (int i = 0; i < m; i++) { for (int j = 0; j < n; j++) { if (!eq(A[i][j], T(0))) { p[i] = j; break; } } if (p[i] < n) is_zero[p[i]] = false; else if (!eq(b[i], T(0))) return {}; } vector<T> x(n, T(0)); for (int i = 0; i < m; i++) { if (p[i] < n) x[p[i]] = b[i]; } ret.push_back(x); for (int j = 0; j < n; j++) { if (!is_zero[j]) continue; x[j] = T(1); for (int i = 0; i < m; i++) { if (p[i] < n) x[p[i]] = -A[i][j]; } ret.push_back(x), x[j] = T(0); } return ret; } }; struct Union_Find_Tree { vector<int> data; const int n; int cnt; Union_Find_Tree(int n) : data(n, -1), n(n), cnt(n) {} int root(int x) { if (data[x] < 0) return x; return data[x] = root(data[x]); } int operator[](int i) { return root(i); } bool unite(int x, int y) { x = root(x), y = root(y); if (x == y) return false; if (data[x] > data[y]) swap(x, y); data[x] += data[y], data[y] = x; cnt--; return true; } int size(int x) { return -data[root(x)]; } int count() { return cnt; }; bool same(int x, int y) { return root(x) == root(y); } void clear() { cnt = n; fill(begin(data), end(data), -1); } }; template <typename T> struct Number_Theoretic_Transform { static int max_base; static T root; static vector<T> r, ir; Number_Theoretic_Transform() {} static void init() { if (!r.empty()) return; int mod = T::get_mod(); int tmp = mod - 1; root = 2; while (root.pow(tmp >> 1) == 1) root++; max_base = 0; while (tmp % 2 == 0) tmp >>= 1, max_base++; r.resize(max_base), ir.resize(max_base); for (int i = 0; i < max_base; i++) { r[i] = -root.pow((mod - 1) >> (i + 2)); // r[i] := 1 の 2^(i+2) 乗根 ir[i] = r[i].inverse(); // ir[i] := 1/r[i] } } static void ntt(vector<T> &a) { init(); int n = a.size(); assert((n & (n - 1)) == 0); assert(n <= (1 << max_base)); for (int k = n; k >>= 1;) { T w = 1; for (int s = 0, t = 0; s < n; s += 2 * k) { for (int i = s, j = s + k; i < s + k; i++, j++) { T x = a[i], y = w * a[j]; a[i] = x + y, a[j] = x - y; } w *= r[__builtin_ctz(++t)]; } } } static void intt(vector<T> &a) { init(); int n = a.size(); assert((n & (n - 1)) == 0); assert(n <= (1 << max_base)); for (int k = 1; k < n; k <<= 1) { T w = 1; for (int s = 0, t = 0; s < n; s += 2 * k) { for (int i = s, j = s + k; i < s + k; i++, j++) { T x = a[i], y = a[j]; a[i] = x + y, a[j] = w * (x - y); } w *= ir[__builtin_ctz(++t)]; } } T inv = T(n).inverse(); for (auto &e : a) e *= inv; } static vector<T> convolve(vector<T> a, vector<T> b) { if (a.empty() || b.empty()) return {}; int k = (int)a.size() + (int)b.size() - 1, n = 1; while (n < k) n <<= 1; a.resize(n), b.resize(n); ntt(a), ntt(b); for (int i = 0; i < n; i++) a[i] *= b[i]; intt(a), a.resize(k); return a; } }; template <typename T> int Number_Theoretic_Transform<T>::max_base = 0; template <typename T> T Number_Theoretic_Transform<T>::root = T(); template <typename T> vector<T> Number_Theoretic_Transform<T>::r = vector<T>(); template <typename T> vector<T> Number_Theoretic_Transform<T>::ir = vector<T>(); using NTT = Number_Theoretic_Transform<mint>; template <typename T> struct Formal_Power_Series : vector<T> { using NTT_ = Number_Theoretic_Transform<T>; using vector<T>::vector; Formal_Power_Series(const vector<T> &f) : vector<T>(f) {} // f(x) mod x^n Formal_Power_Series pre(int n) const { Formal_Power_Series ret(begin(*this), begin(*this) + min((int)this->size(), n)); ret.resize(n, 0); return ret; } // f(1/x)x^{n-1} Formal_Power_Series rev(int n = -1) const { Formal_Power_Series ret = *this; if (n != -1) ret.resize(n, 0); reverse(begin(ret), end(ret)); return ret; } void normalize() { while (!this->empty() && this->back() == 0) this->pop_back(); } Formal_Power_Series operator-() const { Formal_Power_Series ret = *this; for (int i = 0; i < (int)ret.size(); i++) ret[i] = -ret[i]; return ret; } Formal_Power_Series &operator+=(const T &t) { if (this->empty()) this->resize(1, 0); (*this)[0] += t; return *this; } Formal_Power_Series &operator+=(const Formal_Power_Series &g) { if (g.size() > this->size()) this->resize(g.size()); for (int i = 0; i < (int)g.size(); i++) (*this)[i] += g[i]; this->normalize(); return *this; } Formal_Power_Series &operator-=(const T &t) { if (this->empty()) this->resize(1, 0); *this[0] -= t; return *this; } Formal_Power_Series &operator-=(const Formal_Power_Series &g) { if (g.size() > this->size()) this->resize(g.size()); for (int i = 0; i < (int)g.size(); i++) (*this)[i] -= g[i]; this->normalize(); return *this; } Formal_Power_Series &operator*=(const T &t) { for (int i = 0; i < (int)this->size(); i++) (*this)[i] *= t; return *this; } Formal_Power_Series &operator*=(const Formal_Power_Series &g) { if (empty(*this) || empty(g)) { this->clear(); return *this; } return *this = NTT_::convolve(*this, g); } Formal_Power_Series &operator/=(const T &t) { assert(t != 0); T inv = t.inverse(); return *this *= inv; } // f(x) を g(x) で割った商 Formal_Power_Series &operator/=(const Formal_Power_Series &g) { if (g.size() > this->size()) { this->clear(); return *this; } int n = this->size(), m = g.size(); return *this = (rev() * g.rev().inv(n - m + 1)).pre(n - m + 1).rev(); } // f(x) を g(x) で割った余り Formal_Power_Series &operator%=(const Formal_Power_Series &g) { return *this -= (*this / g) * g; } // f(x)/x^k Formal_Power_Series &operator<<=(int k) { Formal_Power_Series ret(k, 0); ret.insert(end(ret), begin(*this), end(*this)); return *this = ret; } // f(x)x^k Formal_Power_Series &operator>>=(int k) { Formal_Power_Series ret; ret.insert(end(ret), begin(*this) + k, end(*this)); return *this = ret; } Formal_Power_Series operator+(const T &t) const { return Formal_Power_Series(*this) += t; } Formal_Power_Series operator+(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) += g; } Formal_Power_Series operator-(const T &t) const { return Formal_Power_Series(*this) -= t; } Formal_Power_Series operator-(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) -= g; } Formal_Power_Series operator*(const T &t) const { return Formal_Power_Series(*this) *= t; } Formal_Power_Series operator*(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) *= g; } Formal_Power_Series operator/(const T &t) const { return Formal_Power_Series(*this) /= t; } Formal_Power_Series operator/(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) /= g; } Formal_Power_Series operator%(const Formal_Power_Series &g) const { return Formal_Power_Series(*this) %= g; } Formal_Power_Series operator<<(int k) const { return Formal_Power_Series(*this) <<= k; } Formal_Power_Series operator>>(int k) const { return Formal_Power_Series(*this) >>= k; } // f(c) T val(const T &c) const { T ret = 0; for (int i = (int)this->size() - 1; i >= 0; i--) ret *= c, ret += (*this)[i]; return ret; } // df/dx Formal_Power_Series derivative() const { if (empty(*this)) return *this; int n = this->size(); Formal_Power_Series ret(n - 1); for (int i = 1; i < n; i++) ret[i - 1] = (*this)[i] * i; return ret; } // ∫f(x)dx Formal_Power_Series integral() const { if (empty(*this)) return *this; int n = this->size(); vector<T> inv(n + 1, 0); inv[1] = 1; int mod = T::get_mod(); for (int i = 2; i <= n; i++) inv[i] = -inv[mod % i] * T(mod / i); Formal_Power_Series ret(n + 1, 0); for (int i = 0; i < n; i++) ret[i + 1] = (*this)[i] * inv[i + 1]; return ret; } // 1/f(x) mod x^n (f[0] != 0) Formal_Power_Series inv(int n = -1) const { assert((*this)[0] != 0); if (n == -1) n = this->size(); Formal_Power_Series ret(1, (*this)[0].inverse()); for (int m = 1; m < n; m <<= 1) { Formal_Power_Series f = pre(2 * m), g = ret; f.resize(2 * m), g.resize(2 * m); NTT_::ntt(f), NTT_::ntt(g); Formal_Power_Series h(2 * m); for (int i = 0; i < 2 * m; i++) h[i] = f[i] * g[i]; NTT_::intt(h); for (int i = 0; i < m; i++) h[i] = 0; NTT_::ntt(h); for (int i = 0; i < 2 * m; i++) h[i] *= g[i]; NTT_::intt(h); for (int i = 0; i < m; i++) h[i] = 0; ret -= h; } ret.resize(n); return ret; } // log(f(x)) mod x^n (f[0] = 1) Formal_Power_Series log(int n = -1) const { assert((*this)[0] == 1); if (n == -1) n = this->size(); Formal_Power_Series ret = (derivative() * inv(n)).pre(n - 1).integral(); ret.resize(n); return ret; } // exp(f(x)) mod x^n (f[0] = 0) Formal_Power_Series exp(int n = -1) const { assert((*this)[0] == 0); if (n == -1) n = this->size(); vector<T> inv(2 * n + 1, 0); inv[1] = 1; int mod = T::get_mod(); for (int i = 2; i <= 2 * n; i++) inv[i] = -inv[mod % i] * T(mod / i); auto inplace_integral = [inv](Formal_Power_Series &f) { if (empty(f)) return; int n = f.size(); f.insert(begin(f), 0); for (int i = 1; i <= n; i++) f[i] *= inv[i]; }; auto inplace_derivative = [](Formal_Power_Series &f) { if (empty(f)) return; int n = f.size(); f.erase(begin(f)); for (int i = 0; i < n - 1; i++) f[i] *= T(i + 1); }; Formal_Power_Series ret{1, this->size() > 1 ? (*this)[1] : 0}, c{1}, z1, z2{1, 1}; for (int m = 2; m < n; m *= 2) { auto y = ret; y.resize(2 * m); NTT_::ntt(y); z1 = z2; Formal_Power_Series z(m); for (int i = 0; i < m; i++) z[i] = y[i] * z1[i]; NTT_::intt(z); fill(begin(z), begin(z) + m / 2, 0); NTT_::ntt(z); for (int i = 0; i < m; i++) z[i] *= -z1[i]; NTT_::intt(z); c.insert(end(c), begin(z) + m / 2, end(z)); z2 = c, z2.resize(2 * m); NTT_::ntt(z2); Formal_Power_Series x(begin(*this), begin(*this) + min((int)this->size(), m)); inplace_derivative(x); x.resize(m, 0); NTT_::ntt(x); for (int i = 0; i < m; i++) x[i] *= y[i]; NTT_::intt(x); x -= ret.derivative(), x.resize(2 * m); for (int i = 0; i < m - 1; i++) x[m + i] = x[i], x[i] = 0; NTT_::ntt(x); for (int i = 0; i < 2 * m; i++) x[i] *= z2[i]; NTT_::intt(x); x.pop_back(); inplace_integral(x); for (int i = m; i < min((int)this->size(), 2 * m); i++) x[i] += (*this)[i]; fill(begin(x), begin(x) + m, 0); NTT_::ntt(x); for (int i = 0; i < 2 * m; i++) x[i] *= y[i]; NTT_::intt(x); ret.insert(end(ret), begin(x) + m, end(x)); } ret.resize(n); return ret; } // f(x)^k mod x^n Formal_Power_Series pow(long long k, int n = -1) const { if (n == -1) n = this->size(); int m = this->size(); for (int i = 0; i < m; i++) { if ((*this)[i] == 0) continue; T inv = (*this)[i].inverse(); Formal_Power_Series g(m - i, 0); for (int j = i; j < m; j++) g[j - i] = (*this)[j] * inv; g = (g.log(n) * k).exp(n) * ((*this)[i].pow(k)); Formal_Power_Series ret(n, 0); if (i > 0 && k > n / i) return ret; long long d = i * k; for (int j = 0; j + d < n && j < g.size(); j++) ret[j + d] = g[j]; return ret; } Formal_Power_Series ret(n, 0); if (k == 0) ret[0] = 1; return ret; } // √f(x) mod x^n (存在しなければ空) Formal_Power_Series sqrt(int n = -1) const { if (n == -1) n = this->size(); int mod = T::get_mod(); auto sqrt_mod = [mod](const T &a) { if (mod == 2) return a; int s = mod - 1, t = 0; while (s % 2 == 0) s /= 2, t++; T root = 2; while (root.pow((mod - 1) / 2) == 1) root++; T x = a.pow((s + 1) / 2); T u = root.pow(s); T y = x * x * a.inverse(); while (y != 1) { int k = 0; T z = y; while (z != 1) k++, z *= z; for (int i = 0; i < t - k - 1; i++) u *= u; x *= u, u *= u, y *= u; t = k; } return x; }; if ((*this)[0] == 0) { for (int i = 1; i < (int)this->size(); i++) { if ((*this)[i] != 0) { if (i & 1) return {}; if ((*this)[i].pow((mod - 1) / 2) != 1) return {}; if (n <= i / 2) break; return ((*this) >> i).sqrt(n - i / 2) << (i / 2); } } return Formal_Power_Series(n, 0); } if ((*this)[0].pow((mod - 1) / 2) != 1) return {}; T tw = T(2).inverse(); Formal_Power_Series ret{sqrt_mod((*this)[0])}; for (int m = 1; m < n; m *= 2) { Formal_Power_Series g = (*this).pre(m * 2) * ret.inv(m * 2); g.resize(2 * m); ret = (ret + g) * tw; } ret.resize(n); return ret; } // f(x+c) Formal_Power_Series Taylor_shift(T c) const { int n = this->size(); vector<T> ifac(n, 1); Formal_Power_Series f(n), g(n); for (int i = 0; i < n; i++) { f[n - 1 - i] = (*this)[i] * ifac[n - 1]; if (i < n - 1) ifac[n - 1] *= i + 1; } ifac[n - 1] = ifac[n - 1].inverse(); for (int i = n - 1; i > 0; i--) ifac[i - 1] = ifac[i] * i; T pw = 1; for (int i = 0; i < n; i++) { g[i] = pw * ifac[i]; pw *= c; } f *= g; Formal_Power_Series b(n); for (int i = 0; i < n; i++) b[i] = f[n - 1 - i] * ifac[i]; return b; } }; using fps = Formal_Power_Series<mint>; template <typename T> vector<Formal_Power_Series<T>> subproduct_tree(const vector<T> &xs) { int n = xs.size(); int k = 1; while (k < n) k <<= 1; vector<Formal_Power_Series<T>> g(2 * k, {1}); for (int i = 0; i < n; i++) g[k + i] = {-xs[i], 1}; for (int i = k - 1; i > 0; i--) g[i] = g[2 * i] * g[2 * i + 1]; return g; } template <typename T> Formal_Power_Series<T> polynomial_interpolation(const vector<T> &xs, const vector<T> &ys) { int n = xs.size(); assert(ys.size() == n); vector<Formal_Power_Series<T>> g = subproduct_tree(xs); int k = g.size() / 2; vector<Formal_Power_Series<T>> f(2 * k); f[1] = g[1].derivative(); for (int i = 2; i < k + n; i++) f[i] = f[i / 2] % g[i]; for (int i = 0; i < n; i++) f[k + i][0] = ys[i] / f[k + i][0]; for (int i = k - 1; i > 0; i--) f[i] = f[2 * i] * g[2 * i + 1] + f[2 * i + 1] * g[2 * i]; f[1].resize(n); return f[1]; } using mat = Matrix<mint>; mint calc(vector<vector<mint>> A, int c) { int n = sz(A); mat B(n, n); rep(i, n) rep(j, n) B[i][j] = A[i][j]; rep(i, n) { rep(j, n) { if (i != j && A[i][j] == 0) { B[i][j] -= c; B[i][i] += c; } } } rep(j, n) B[n - 1][j] = 0, B[j][n - 1] = 0; B[n - 1][n - 1] = 1; return B.row_reduction().second; } int main() { int N, M; cin >> N >> M; Union_Find_Tree uf(N); vector<vector<mint>> A(N, vector<mint>(N, 0)); rep(i, M) { int u, v; cin >> u >> v; u--, v--; A[u][v]--, A[u][u]++; A[v][u]--, A[v][v]++; uf.unite(u, v); } if (uf.count() >= 2) { mat B(N, N); rep(i, N) rep(j, N) B[i][j] = A[i][j]; vector<int> c; rep(i, N) { if (uf[i] == i) { c.eb(uf.size(i)); rep(j, N) B[i][j] = 0, B[j][i] = 0; B[i][i] = 1; } } mint ans = B.row_reduction().second; int res = N * N; sort(rall(c)); each(e, c) res -= e * e; if (c[0] == c[1]) { int K = 0; each(e, c) { if (e == c[0]) K++; } res -= 2 * c[0] * c[0]; ans *= c[0] * c[0] * K * (K - 1) / 2; } else { int K = 0; each(e, c) { if (e == c[1]) K++; } res -= 2 * c[0] * c[1]; ans *= c[0] * c[1] * K; } cout << res << '\n' << ans << '\n'; } else { vector<mint> xs, ys; rep(i, N + 1) xs.eb(i), ys.eb(calc(A, i)); auto f = polynomial_interpolation(xs, ys); cout << "0\n" << f[0] + f[1] << '\n'; } }