#line 1 "No_201_yukicoder\u3058\u3083\u3093\u3051\u3093.cpp" #define YRSD #line 2 "YRS/all.hpp" #line 2 "YRS/aa/head.hpp" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define TE template #define TES template #define Z auto #define ep emplace_back #define eb emplace #define fi first #define se second #define all(x) (x).begin(), (x).end() #define ov(a, b, c, d, e, ...) e #define FO1(a) for (int _ = 0; _ < (a); ++_) #define FO2(i, a) for (int i = 0; i < (a); ++i) #define FO3(i, a, b) for (int i = (a); i < (b); ++i) #define FO4(i, a, b, c) for (int i = (a); i < (b); i += (c)) #define FOR(...) ov(__VA_ARGS__, FO4, FO3, FO2, FO1)(__VA_ARGS__) #define FF1(a) for (int _ = (a) - 1; _ >= 0; --_) #define FF2(i, a) for (int i = (a) - 1; i >= 0; --i) #define FF3(i, a, b) for (int i = (b) - 1; i >= (a); --i) #define FF4(i, a, b, c) for (int i = (b) - 1; i >= (a); i -= (c)) #define FOR_R(...) ov(__VA_ARGS__, FF4, FF3, FF2, FF1)(__VA_ARGS__) #define FOR_subset(t, s) for (int t = (s); t > -1; t = (t == 0 ? -1 : (t - 1) & s)) #define sort ranges::sort using namespace std; TE using vc = vector; TE using vvc = vc>; TE using T1 = tuple; TE using T2 = tuple; TE using T3 = tuple; TE using T4 = tuple; TE using max_heap = priority_queue; TE using min_heap = priority_queue, greater>; using u8 = unsigned char; using uint = unsigned int; using ll = long long; using ull = unsigned long long; using ld = long double; using i128 = __int128; using u128 = __uint128_t; using f128 = __float128; using u16 = uint16_t; using PII = pair; using PLL = pair; #ifdef YRSD constexpr bool dbg = 1; #else constexpr bool dbg = 0; #endif #line 2 "YRS/IO/IO.hpp" istream &operator>>(istream &I, i128 &x) { static string s; I >> s; int f = s[0] == '-'; x = 0; const int N = (int)s.size(); FOR(i, f, N) x = x * 10 + s[i] - '0'; if (f) x = -x; return I; } ostream &operator<<(ostream &O, i128 x) { static string s; s.clear(); bool f = x < 0; if (f) x = -x; while (x) s += '0' + x % 10, x /= 10; if (s.empty()) s += '0'; if (f) s += '-'; reverse(all(s)); return O << s; } istream &operator>>(istream &I, f128 &x) { static string s; I >> s, x = stold(s); return I; } ostream &operator<<(ostream &O, const f128 x) { return O << ld(x); } template istream &operator>>(istream &I, tuple &t) { return apply([&I](Z &...s) { ((I >> s), ...); }, t), I; } template istream &operator>>(istream &I, pair &x) { return I >> x.fi >> x.se; } template ostream &operator<<(ostream &O, const pair &x) { return O << x.fi << ' ' << x.se; } TE requires requires(T &c) { begin(c); end(c); } and (not is_same_v, string>) istream &operator>>(istream &I, T &c) { for (Z &e : c) I >> e; return I; } TE requires requires(const T &c) { begin(c); end(c); } and (not is_same_v, const char*>) and (not is_same_v, string>) and (not is_array_v> or not is_same_v>, char>) ostream &operator<<(ostream &O, const T &a) { if (a.empty()) return O; Z i = a.begin(); O << *i++; for (; i != a.end(); ++i) O << ' ' << *i; return O; } void IN() {} TE void IN(T &x, Z &...s) { cin >> x, IN(s...); } void print() { cout << '\n'; } TES void print(T &&x, S &&...y) { cout << x; if constexpr (sizeof...(S)) cout << ' '; print(forward(y)...); } void put() {} TES void put(T &&x, S &&...y) { cout << x; put(forward(y)...); } #define INT(...) int __VA_ARGS__; IN(__VA_ARGS__) #define UINT(...) uint __VA_ARGS__; IN(__VA_ARGS__) #define LL(...) ll __VA_ARGS__; IN(__VA_ARGS__) #define ULL(...) ull __VA_ARGS__; IN(__VA_ARGS__) #define I128(...) i128 __VA_ARGS__; IN(__VA_ARGS__) #define STR(...) string __VA_ARGS__; IN(__VA_ARGS__) #define CH(...) char __VA_ARGS__; IN(__VA_ARGS__) #define REAL(...) re __VA_ARGS__; IN(__VA_ARGS__) #define VEC(T, a, n) vc a(n); IN(a) void YES(bool o = 1) { print(o ? "YES" : "NO"); } void Yes(bool o = 1) { print(o ? "Yes" : "No"); } void yes(bool o = 1) { print(o ? "yes" : "no"); } void NO(bool o = 1) { YES(not o); } void No(bool o = 1) { Yes(not o); } void no(bool o = 1) { yes(not o); } void ALICE(bool o = 1) { print(o ? "ALICE" : "BOB"); } void Alice(bool o = 1) { print(o ? "Alice" : "Bob"); } void alice(bool o = 1) { print(o ? "alice" : "bob"); } void BOB(bool o = 1) { ALICE(not o); } void Bob(bool o = 1) { Alice(not o); } void bob(bool o = 1) { alice(not o); } void POSSIBLE(bool o = 1) { print(o ? "POSSIBLE" : "IMPOSSIBLE"); } void Possible(bool o = 1) { print(o ? "Possible" : "Impossible"); } void possible(bool o = 1) { print(o ? "possible" : "impossible"); } void IMPOSSIBLE(bool o = 1) { POSSIBLE(not o); } void Impossible(bool o = 1) { Possible(not o); } void impossible(bool o = 1) { possible(not o); } void TAK(bool o = 1) { print(o ? "TAK" : "NIE"); } void NIE(bool o = 1) { TAK(not o); } #line 5 "YRS/all.hpp" #if (__cplusplus >= 202002L) #include constexpr ld pi = numbers::pi_v; #endif TE constexpr T inf = numeric_limits::max(); template <> constexpr i128 inf = i128(inf) * 2'000'000'000'000'000'000; template constexpr pair inf> = {inf, inf}; TE constexpr static inline int pc(T x) { return popcount(make_unsigned_t(x)); } constexpr static inline ll len(const Z &a) { return a.size(); } void reverse(Z &a) { reverse(all(a)); } void unique(Z &a) { sort(a); a.erase(unique(all(a)), a.end()); } TE vc inverse(const vc &a) { int N = len(a); vc b(N, -1); FOR(i, N) if (a[i] != -1) b[a[i]] = i; return b; } Z QMAX(const Z &a) { return *max_element(all(a)); } Z QMIN(const Z &a) { return *min_element(all(a)); } TE Z QMAX(T l, T r) { return *max_element(l, r); } TE Z QMIN(T l, T r) { return *min_element(l, r); } constexpr bool chmax(Z &a, const Z &b) { return (a < b ? a = b, 1 : 0); } constexpr bool chmin(Z &a, const Z &b) { return (a > b ? a = b, 1 : 0); } vc argsort(const Z &a) { vc I(len(a)); iota(all(I), 0); sort(I, [&](int i, int k) { return a[i] < a[k] or (a[i] == a[k] and i < k); }); return I; } TE vc rearrange(const vc &a, const vc &I) { int N = len(I); vc b(N); FOR(i, N) b[i] = a[I[i]]; return b; } template vc pre_sum(const vc &a) { int N = len(a); vc c(N + 1); FOR(i, N) c[i + 1] = c[i] + a[i]; if (of == 0) c.erase(c.begin()); return c; } TE constexpr static int topbit(T x) { if (x == 0) return - 1; if constexpr (sizeof(T) <= 4) return 31 - __builtin_clz(x); else return 63 - __builtin_clzll(x); } TE constexpr static int lowbit(T x) { if (x == 0) return -1; if constexpr (sizeof(T) <= 4) return __builtin_ctz(x); else return __builtin_ctzll(x); } TE constexpr T floor(T x, T y) { return x / y - (x % y and (x ^ y) < 0); } TE constexpr T ceil(T x, T y) { return floor(x + y - 1, y); } TE constexpr T bmod(T x, T y) { return x - floor(x, y) * y; } TE constexpr pair divmod(T x, T y) { T q = floor(x, y); return pair{q, x - q * y}; } template T SUM(const Z &v) { return accumulate(all(v), T(0)); } int lb(const Z &a, Z x) { return lower_bound(all(a), x) - a.begin(); } TE int lb(T l, T r, Z x) { return lower_bound(l, r, x) - l; } int ub(const Z &a, Z x) { return upper_bound(all(a), x) - a.begin(); } TE int ub(T l, T r, Z x) { return upper_bound(l, r, x) - l; } template ll bina(Z f, ll l, ll r) { if constexpr (ck) assert(f(l)); while (abs(l - r) > 1) { ll x = (r + l) >> 1; (f(x) ? l : r) = x; } return l; } TE T bina_real(Z f, T l, T r, int c = 100) { while (c--) { T x = (l + r) / 2; (f(x) ? l : r) = x; } return (l + r) / 2; } Z pop(Z &s) { if constexpr (requires { s.pop_back(); }) { Z x = s.back(); return s.pop_back(), x; } else if constexpr (requires { s.top(); }) { Z x = s.top(); return s.pop(), x; } else { Z x = s.front(); return s.pop(), x; } } void setp(int x) { cout << fixed << setprecision(x); } TE inline void sh(vc &a, int N, T b = {}) { a.resize(N, b); } #line 1 "YRS/debug.hpp" #ifdef YRSD void DBG() { cerr << "]" << endl; } TES void DBG(T &&x, S &&...y) { cerr << x; if constexpr (sizeof...(S)) cerr << ", "; DBG(forward(y)...); } #define debug(...) cerr << "[" << __LINE__ << "]: [" #__VA_ARGS__ "] = [", DBG(__VA_ARGS__) void ERR() { cerr << endl; } TES void ERR(T &&x, S &&...y) { cerr << x; if constexpr (sizeof...(S)) cerr << ", "; ERR(forward(y)...); } #define err(...) cerr << "[" << __LINE__ << "]: ", ERR(__VA_ARGS__) #define asser assert #else #define debug(...) void(0721) #define err(...) void(0721) #endif #line 2 "YRS/nt/bigint/big.hpp" #line 2 "YRS/poly/c/bs.hpp" #line 2 "YRS/poly/c/fps_t.hpp" #line 2 "YRS/mod/mint_t.hpp" #define c constexpr template struct mint_t { using T = mint_t; static c uint m = mod; uint x; c inline uint val() const { return x; } c mint_t() : x(0) {} c mint_t(uint x) : x(x % m) {} c mint_t(ull x) : x(x % m) {} c mint_t(u128 x) : x(x % m) {} c mint_t(int x) : x((x %= mod) < 0 ? x + mod : x) {} c mint_t(ll x) : x((x %= mod) < 0 ? x + mod : x) {} c mint_t(i128 x) : x((x %= mod) < 0 ? x + mod : x) {} c T &operator+=(T p) { if ((x += p.x) >= m) x -= m; return *this; } c T &operator-=(T p) { if ((x += m - p.x) >= m) x -= m; return *this; } c T operator+(T p) const { return T(*this) += p; } c T operator-(T p) const { return T(*this) -= p; } c T &operator*=(T p) { x = ull(x) * p.x % m; return *this; } c T operator*(T p) const { return T(*this) *= p; } c T &operator/=(T p) { return *this *= p.inv(); } c T operator/(T p) const { return T(*this) /= p; } c T operator-() const { return T::gen(x ? mod - x : 0); } c T inv() const { int a = x, b = mod, x = 1, y = 0; while (b > 0) { int t = a / b; swap(a -= t * b, b); swap(x -= t * y, y); } return T(x); } c T pow(ll k) const { if (k < 0) return inv().pow(-k); T s(1), a(x); for (; k; k >>= 1, a *= a) if (k & 1) s *= a; return s; } c bool operator<(T p) const { return x < p.x; } c bool operator==(T p) const { return x == p.x; } c bool operator!=(T p) const { return x != p.x; } static c T gen(uint x) { T s; s.x = x; return s; } friend istream &operator>>(istream &cin, T &p) { ll t; cin >> t; p = t; return cin; } friend ostream &operator<<(ostream &cout, T p) { return cout << p.x; } static c int get_mod() { return mod; } static c PII ntt_info() { if (mod == 167772161) return {25, 17}; if (mod == 469762049) return {26, 30}; if (mod == 754974721) return {24, 362}; if (mod == 998244353) return {23, 31}; if (mod == 120586241) return {20, 74066978}; if (mod == 880803841) return {23, 211}; if (mod == 943718401) return {22, 663003469}; if (mod == 1004535809) return {21, 582313106}; if (mod == 1012924417) return {21, 368093570}; return {-1, -1}; } static c bool can_ntt() { return ntt_info().fi != -1; } }; #undef c using M99 = mint_t<998244353>; using M17 = mint_t<1000000007>; #ifdef FIO template void rd(mint_t &x) { LL(y); x = y; } template void wt(mint_t x) { wt(x.x); } #endif #line 4 "YRS/poly/c/fps_t.hpp" // 动态模数需要在 设置模数后 进行构造 TE struct fps_t { using fps = vc; using cf = const fps &; static inline const uint p = T::get_mod(), t = T::ntt_info().fi, r = T::ntt_info().se; static inline const ull M = ull(p) * p; // 需要动态模数反复set mod的啥比题到底是谁在出 // static inline uint p = T::get_mod(), t = T::ntt_info().fi, // r = T::ntt_info().se; // static inline ull M = ull(p) * p; // static void reset() { // p = T::get_mod(); // tie(t, r) = T::ntt_info(); // M = ull(p) * p; // } fps fa{1, 1}, ifa{1, 1}, in{0, 1}; T inv(int); T fac(int); T ifac(int); T C(int, int); static constexpr int p0 = 167'772'161, p1 = 469'762'049, p2 = 754'974'721; using f0 = fps_t>; using f1 = fps_t>; using f2 = fps_t>; static void sh(fps &, int); static int count_terms(cf); static T eval(cf, T); T crt(ull, ull, ull); u128 crt_128(ull, ull, ull); static void ntr(T *, T *, T *, T *, T *, T *); static void ntt(fps &, bool); static void trans_ntt(fps &, bool); static void ntt_db(fps &f, bool = 0); fps conv_naive(cf, cf); fps conv_kara(cf, cf); static fps conv_ntt(fps, fps); fps conv_mtt(cf, cf); fps conv(cf, cf); vc conv_for_big(const vc &, const vc &); static fps sq_ntt(fps); fps sq_mtt(cf); fps sq(cf); fps diff(cf); fps inte(cf); T inte(cf, T, T); fps mid_prod(cf, cf); fps inv_sp(cf); fps inv_ntt(cf); fps inv_mtt(cf); fps inv(cf); fps div_sp(fps, fps); fps div_ntt(cf, cf); fps div_mtt(fps, fps); fps div_dense(cf, cf); fps div(cf, cf); fps log_sp(cf); fps log_dense(cf); fps log(cf); fps exp_sp(cf); fps exp_ntt(cf); fps exp_mtt(cf); fps exp_dense(cf); fps exp(cf); fps pw_sp(cf, T); fps pw_dense(cf, T); fps pw(cf, T); fps pow(cf, ll); fps sqr_sp(cf); fps sqr_ntt(cf); fps sqr_dense(cf); fps sqr(cf); fps sqrt(cf); fps conv_all(const vc &); fps conv_all(fps); fps eval_geo(fps, T, T, int); fps inte_geo(fps, T, T); struct subprod_t; subprod_t subprod(cf); fps eval_ntt(fps, fps); fps eval(fps, fps); fps inte(fps, fps); fps shift(fps, T); T lag(cf, T); fps lag(cf, T, int); T lag(cf, cf, T); fps pow_proj_ntt(fps, fps, int); fps pow_proj(fps, fps, int); fps comp_slow(cf, cf); fps comp_ntt(fps, fps); fps comp_mtt(fps, fps); fps comp(fps, fps); fps comp_inv(fps); pair divmod(fps, cf); fps modpow(cf, ll, cf); fps prod_of_f_rk_x(fps, T, int); fps prod_of_one_minus_xn(const vc &, int); fps prod_of_inv_one_minus_xn(const vc &, int); fps prod_of_one_plus_xn(const vc &a, int); fps prod_of_inv_one_plus_xn(const vc &a, int); pair sum_of_rationals(vc>); pair sum_of_rationals_sp(cf, cf); fps sum_of_exp_bx(cf, cf, int); fps sum_of_pow(cf, int); fps sum_of_pow(ll, ll, int); fps sum_of_pow(cf, cf, int); fps sum_of_binomail(fps, T, T); fps subset_sum(const vc &, int k); fps subset_sum_lm(const vc &, int k); T coef_of_rationals_ntt(fps, fps, ll); T coef_of_rationals_mtt(fps, fps, ll); T coef_of_rationals(fps, fps, ll); fps find_line(cf); T line_inte(cf a, ll N); template struct fac_t; template fac_t fac_large(); fps p_to_ffp(cf); fps ffp_to_p(cf); fps ffp_conv_ntt(fps, fps); fps ffp_conv_mtt(fps, fps); fps ffp_conv(cf, cf); fps sin(cf); fps cos(cf); fps asin(cf); fps atan(cf); fps comp_f_ex(cf); fps comp_f_1_minus_ex(cf); fps comp_f_ex_minus_1(cf); fps comp_f_a_plus_bx(cf, T, T); fps comp_f_aplusbx_div_cplusdx_fake(cf, T, T, T, T); fps comp_f_aplusbx_div_cplusdx(cf, T, T, T, T); fps comp_f_x_plus_1_divx(cf); struct conv_t; conv_t online_conv(); struct exp_t; exp_t online_exp(); struct log_t; log_t online_log(); struct inv_t; inv_t online_inv(); struct div_t; div_t online_div(); struct pow_t; pow_t online_pow(T); fps presum(cf, T); fps sinh(int); fps exp_x(int); fps exp_invx(int); fps E_S(int); fps E(int); fps E_n(int, int); fps E_odd(int); fps E_noempty(int); fps C_R(int); fps bell(int); fps derange(int); fps bernoulli(int); fps partition(int); fps count_label_dag(int); fps count_label_dag_con(int); fps count_label_undir(int); fps count_label_undir_con(int); fps count_label_unicycle(int); fps count_label_bipartite(int, bool); fps count_label_bcc_v(int); T count_label_bcc_v_N(int); fps count_label_bcc_e(int); T count_label_bcc_e_N(int); T count_label_tournament(int); fps count_label_scc(int); fps count_label_euler_undir(int); fps count_label_tree(int); fps count_unlabel_tree(int); }; #line 4 "YRS/poly/c/bs.hpp" TE Z fps_t::inv(int n) -> T { assert(0 <= n); while (len(in) <= n) { int k = len(in), q = (p + k - 1) / k, r = k * q - p; in.ep(in[r] * T(q)); } return in[n]; } TE Z fps_t::fac(int n) -> T { if (n >= p) return 0; while (len(fa) <= n) { int k = len(fa); fa.ep(fa[k - 1] * T(k)); } return fa[n]; } TE Z fps_t::ifac(int n) -> T { if (n < 0) return T(0); while (len(ifa) <= n) ifa.ep(ifa.back() * inv(len(ifa))); return ifa[n]; } TE Z fps_t::C(int n, int k) -> T { assert(n >= 0); if (k < 0 or n < k) return 0; return fac(n) * ifac(k) * ifac(n - k); } TE Z fps_t::sh(fps &a, int N) -> void { a.resize(N); } // 非0项数量 TE Z fps_t::count_terms(cf f) -> int { int s = 0, N = len(f); FOR(i, N) s += f[i].val() != 0; return s; } TE Z fps_t::eval(cf f, T x) -> T { T s = 0, c = 1; int N = len(f); FOR(i, N) s += f[i] * c, c *= x; return s; } TE Z fps_t::crt(ull a, ull b, ull c) -> T { constexpr ull x = 104'391'568, xx = 190'329'765; ull t = (b - a + p1) * x % p1, s = a + t * p0; t = (c - s % p2 + p2) * xx % p2; return T(s) + T(t) * T(ull(p0) * p1); } TE Z fps_t::ntr(T *w, T *iw, T *r, T *ir, T *b, T *ib) -> void { w[t] = fps_t::r, iw[t] = w[t].inv(); FOR_R(i, t) w[i] = w[i + 1] * w[i + 1], iw[i] = iw[i + 1] * iw[i + 1]; T s = 1, c = 1; #define f(a, g) FOR(i, t - g + 1) a[i] = w[i + g] * s, s *= iw[i + g], i##a[i] = iw[i + g] * c, c *= w[i + g] f(r, 2); s = c = 1; f(b, 3); #undef f } TE Z fps_t::ntt(fps &a, bool in) -> void { assert(T::can_ntt()); const uint m = p; static T w[30], iw[30], r[30], ir[30], b[30], ib[30]; static bool ok = 0; if (ok == 0) ok = 1, ntr(w, iw, r, ir, b, ib); #define f(k) a[i + of + k * p] #define g(k) ull(f(k).val()) #define tp topbit(~s & -~s) int N = len(a), n = topbit(N); if (not in) { int sz = 0; while (sz < n) { if (n - sz == 1) { int p = 1 << (n - sz - 1); T c = 1; FOR(s, 1 << sz) { int of = s << (n - sz); FOR(i, p) { T l = f(0), w = f(1) * c; f(0) = l + w, f(1) = l - w; } c *= r[tp]; } ++sz; } else { int p = 1 << (n - sz - 2); T c = 1, in = w[2]; FOR(s, 1 << sz) { T rr = c * c, R = rr * c; int of = s << (n - sz); FOR(i, p) { ull x = g(0), y = g(1) * c.val(), e = g(2) * rr.val(), r = g(3) * R.val(), t = (y + M - r) % m * in.val(); f(0) = x + y + e + r; f(1) = x + e + M + M - y - r; f(2) = x + M - e + t; f(3) = x + M + M - e - t; } c *= b[tp]; } sz += 2; } } } else { T c = T(N).inv(); FOR(i, N) a[i] *= c; int sz = n; while (sz) { if (sz == 1) { int p = 1 << (n - sz); T c = 1; FOR(s, 1 << (sz - 1)) { int of = s << (n - sz + 1); FOR(i, p) { ull l = g(0), r = g(1); f(0) = l + r, f(1) = (m + l - r) * c.val(); } c *= ir[tp]; } --sz; } else { int p = 1 << (n - sz); T c = 1, in = iw[2]; FOR(s, 1 << (sz - 2)) { T rr = c * c, R = rr * c; int of = s << (n - sz + 2); FOR(i, p) { ull x = g(0), y = g(1), e = g(2), r = g(3), t = (m + e - r) * in.val() % m; f(0) = x + y + e + r; f(1) = (x + m - y + t) * c.val(); f(2) = (x + y + m + m - e - r) * rr.val(); f(3) = (x + m + m - y - t) * R.val(); } c *= ib[tp]; } sz -= 2; } } } } #undef f #undef g #undef tp TE Z fps_t::conv_naive(cf a, cf b) -> fps { int N = len(a), M = len(b), sz = N + M - 1; if (not N or not M) return {}; if (N > M) return conv_naive(b, a); fps c(sz); FOR(i, N) FOR(k, M) c[i + k] += a[i] * b[k]; return c; } TE Z fps_t::conv_kara(cf f, cf g) -> fps { constexpr int lm = 30; if (min(len(f), len(g)) <= lm) return conv_naive(f, g); int N = max(len(f), len(g)), M = ceil(N, 2); fps f1, f2, g1, g2; if (len(f) < M) f1 = f; if (len(f) >= M) f1 = {f.begin(), f.begin() + M}; if (len(f) >= M) f2 = {f.begin() + M, f.end()}; if (len(g) < M) g1 = g; if (len(g) >= M) g1 = {g.begin(), g.begin() + M}; if (len(g) >= M) g2 = {g.begin() + M, g.end()}; fps a = conv_kara(f1, g1); fps b = conv_kara(f2, g2); FOR(i, len(f2)) f1[i] += f2[i]; FOR(i, len(g2)) g1[i] += g2[i]; fps c = conv_kara(f1, g1); fps F(len(f) + len(g) - 1); FOR(i, len(a)) F[i] += a[i], c[i] -= a[i]; FOR(i, len(b)) F[2 * M + i] += b[i], c[i] -= b[i]; if (c.back() == T(0)) c.pop_back(); FOR(i, len(c)) if (c[i] != T(0)) F[M + i] += c[i]; return F; } TE Z fps_t::conv_ntt(fps a, fps b) -> fps { assert(T::can_ntt()); int N = len(a), M = len(b), sz = 1; if (min(N, M) == 0) return {}; while (sz < N + M - 1) sz <<= 1; sh(a, sz), sh(b, sz); ntt(a, 0); ntt(b, 0); FOR(i, sz) a[i] *= b[i]; ntt(a, 1); sh(a, N + M - 1); return a; } TE Z fps_t::conv_mtt(cf a, cf b) -> fps { int N = len(a), M = len(b); if (not N or not M) return {}; f0::fps a0(N), b0(M); f1::fps a1(N), b1(M); f2::fps a2(N), b2(M); FOR(i, N) a0[i] = a[i].val(), a1[i] = a[i].val(), a2[i] = a[i].val(); FOR(i, M) b0[i] = b[i].val(), b1[i] = b[i].val(), b2[i] = b[i].val(); Z c0 = f0::conv_ntt(a0, b0); Z c1 = f1::conv_ntt(a1, b1); Z c2 = f2::conv_ntt(a2, b2); fps c(len(c0)); FOR(i, N + M - 1) c[i] = crt(c0[i].val(), c1[i].val(), c2[i].val()); return c; } TE Z fps_t::conv(cf a, cf b) -> fps { int N = len(a), M = len(b); if (min(N, M) == 0) return {}; if (T::can_ntt()) { if (min(N, M) <= 50) return conv_kara(a, b); return conv_ntt(a, b); } if (min(N, M) <= 200) return conv_kara(a, b); return conv_mtt(a, b); } TE Z fps_t::sq_ntt(fps a) -> fps { assert(T::can_ntt()); int N = len(a), sz = 1; if (N == 0) return {}; while (sz < N + N - 1) sz <<= 1; sh(a, sz); ntt(a, 0); FOR(i, sz) a[i] *= a[i]; ntt(a, 1); sh(a, N + N - 1); return a; } TE Z fps_t::sq_mtt(cf a) -> fps { int N = len(a); if (N == 0) return {}; f0::fps a0(N); f1::fps a1(N); f2::fps a2(N); FOR(i, N) a0[i] = a[i].val(), a1[i] = a[i].val(), a2[i] = a[i].val(); Z c0 = f0::sq_ntt(a0); Z c1 = f1::sq_ntt(a1); Z c2 = f2::sq_ntt(a2); fps c(len(c0)); FOR(i, N + N - 1) c[i] = crt(c0[i].val(), c1[i].val(), c2[i].val()); return c; } TE Z fps_t::sq(cf a) -> fps { int N = len(a); if (T::can_ntt()) { if (N <= 50) return conv_naive(a, a); return sq_ntt(a); } if (N <= 150) return conv_kara(a, a); return sq_mtt(a); } // 微分 TE Z fps_t::diff(cf f) -> fps { int N = len(f); if (N <= 1) return {}; fps g(N - 1); FOR(i, N - 1) g[i] = f[i + 1] * T(i + 1); return g; } // 积分 TE Z fps_t::inte(cf f) -> fps { int N = len(f); fps g(N + 1); FOR(i, 1, N + 1) g[i] = f[i - 1] * inv(i); return g; } // 定积分 TE Z fps_t::inte(cf f, T l, T r) -> T { T s = 0, L = 1, R = 1; int N = len(f); FOR(i, N) { L *= l, R *= r; s += inv(i + 1) * f[i] * (L - R); } return s; } #line 4 "YRS/nt/bigint/big.hpp" TE Z fps_t::crt_128(ull a, ull b, ull c) -> u128 { constexpr ull x = 104'391'568, xx = 190'329'765; ull t = (b - a + p1) * x % p1, s = a + t * p0; t = (c - s % p2 + p2) * xx % p2; return s + u128(t) * p0 * p1; } TE Z fps_t::conv_for_big(const vc &a, const vc &b) -> vc { f0::fps a0(all(a)), b0(all(b)); f1::fps a1(all(a)), b1(all(b)); f2::fps a2(all(a)), b2(all(b)); Z c0 = f0::conv_ntt(a0, b0); Z c1 = f1::conv_ntt(a1, b1); Z c2 = f2::conv_ntt(a2, b2); vc c(len(c0)); u128 x = 0; static constexpr int M = 1000000000; int N = len(a) + len(b) - 1; FOR(i, N) { x += crt_128(c0[i].val(), c1[i].val(), c2[i].val()); c[i] = x % M, x /= M; } while (x) c.ep(x % M), x /= M; return c; } // https://www.luogu.com.cn/problem/P2152 高精度gcd struct bigint { static constexpr int TEN[] {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000}; static constexpr int n = 9, M = TEN[n]; using T = bigint; int op; vc a; bigint() : op(0), a() {} bigint(int op, const vc &a) : op(op), a(a) {} bigint(ll x) { if (x == 0) { op = 0; return; } op = 1; if (x < 0) op = -1, x = -x; while (x) a.ep(x % M), x /= M; } bigint(string s) { if (s[0] == '0') { op = 0; return; } op = 1; if (s[0] == '-') op = -1, s.erase(s.begin()); reverse(s); int N = len(s), m = ceil(N, n); a.assign(m, 0); FOR(i, N) a[i / n] += TEN[i % n] * (s[i] - '0'); } void from_str(string s) { a.clear(); if (s[0] == '0') { op = 0; return; } op = 1; if (s[0] == '-') op = -1, s.erase(s.begin()); reverse(s); int N = len(s), m = ceil(N, n); a.assign(m, 0); FOR(i, N) a[i / n] += TEN[i % n] * (s[i] - '0'); } bool operator<(const T &p) const { if (op != p.op) return op < p.op; if (op == 0) return 0; if (op == 1) return less(a, p.a); else return less(p.a, a); } bool operator>(const T &p) const { return p < *this; } bool operator<=(const T &p) const { return not(*this > p); } bool operator>=(const T &p) const { return not(*this < p); } bool operator==(const T &p) const { return op == p.op and a == p.a; } bool operator!=(const T &p) const { return op != p.op or a != p.a; } T operator-() const { T p = *this; return p.op = -op, p; } T operator+() const { return *this; } T &operator+=(const T &p) { if (op == 0) return *this = p; if (p.op == 0) return *this; if (op == p.op) return a = sum(a, p.a), *this; if (less(a, p.a)) return a = sub(p.a, a), op = -op, *this; a = sub(a, p.a); if (is_zero(a)) op = 0; return *this; } T &operator-=(const T &p) { if (p.op == 0) return *this; if (op == 0) return *this = -p; if (op != p.op) return a = sum(a, p.a), *this; if (less(a, p.a)) return a = sub(p.a, a), op = -op, *this; a = sub(a, p.a); if (is_zero(a)) op = 0; return *this; } T &operator*=(const T &p) { op *= p.op; if (not op) a.clear(); else a = mul(a, p.a); return *this; } T &operator/=(const T &p) { return *this = divmod(p).fi; } T &operator%=(const T &p) { return *this = divmod(p).se; } T operator+(const T &p) const { return T(*this) += p; } T operator-(const T &p) const { return T(*this) -= p; } T operator*(const T &p) const { return T(*this) *= p; } T operator/(const T &p) const { return T(*this) /= p; } T operator%(const T &p) const { return T(*this) %= p; } pair divmod(const T &p) const { assert(p.op != 0); if (op == 0) return {T(), T()}; Z res = divmod_newton(a, p.a); int op1 = op * p.op, op2 = op; if (is_zero(res.fi)) op1 = 0; if (is_zero(res.se)) op2 = 0; return {{op1, res.fi}, {op2, res.se}}; } T pow(ll k) const { return pow(*this, k); } static T pow(T a, ll k) { if (k == 0) return 1; T p = pow(a, k >> 1), s = p * p; return (k & 1) ? s * a : s; } string to_string() const { if (not op) return "0"; string s = to_string(a); if (op == -1) s += '-'; return reverse(s), s; } string to_binary_string() const { assert(op != -1); vc A(all(a)); string s; while (1) { while (not A.empty() and A.back() == uint(0)) pop(A); if (A.empty()) break; ull r = 0; int N = len(A); FOR_R(i, N) { r = r * M + A[i]; A[i] = r >> 32; r &= uint(-1); } FOR(i, 32) s += '0' + (r >> i & 1); } while (not s.empty() and s.back() == '0') pop(s); if (s.empty()) s += '0'; return reverse(s), s; } ll to_ll() const { if (op == 0) return 0; ll x = to_ll(a); return op == -1 ? -x : x; } i128 to_i128() const { if (op == 0) return 0; i128 x = to_i128(a); return op == -1 ? -x : x; } friend ostream &operator<<(ostream &cout, const T &b) { return cout << b.to_string(); } friend istream &operator>>(istream &cin, T &b) { static string s; cin >> s; b.from_str(s); return cin; } bool is_zero() const { return op == 0; } bool is_one() const { return op == 1 and len(a) == 1 and a[0] == 1; } bool is_odd() const { return op != 0 and (a[0] & 1); } bool is_even() const { return not is_odd(); } T div2() const { T r = *this; int N = len(a); for (int i = N; i--; r.a[i] >>= 1) if ((r.a[i] & 1) and i) r.a[i - 1] += M; sh(r.a); if (r.a.empty()) r.op = 0; return r; } T gcd(const T &x) const { T a = this->abs(), b = x.abs(); if (a < b) swap(a, b); if (b.is_zero()) return a; int t = 0; while (a.is_even() and b.is_even()) a = a.div2(), b = b.div2(), ++t; while (b > 0) { if (a.is_even()) a = a.div2(); else if (b.is_even()) b = b.div2(); else a -= b; if (a < b) swap(a, b); } while (t--) a += a; return a; } T lcm(const T &x) const { return *this / gcd(x) * x; } T abs() const { if (op == 0) return 0; if (op < 0) return -(*this); return *this; } using vec = vc; using PVV = pair; static vc mul(const vec &a, const vec &b) { int N = len(a), m = len(b), t = min(N, m); if (t == 0) return {}; if (t <= 500) { vec c(N + m - 1); u128 x = 0; FOR(k, N + m - 1) { int s = max(0, k + 1 - m), t = min(k, N - 1); FOR(i, s, t + 1) x += ull(a[i]) * b[k - i]; c[k] = x % M; x /= M; } while (x > 0) c.ep(x % M), x /= M; return c; } static fps_t> X; return X.conv_for_big(a, b); } static bool is_zero(const vec &a) { return a.empty(); } static bool is_one(const vec &a) { return len(a) == 1 and a[0] == 1; } static bool eq(const vec &a, const vec &b) { return a == b; } static bool less(const vec &a, const vec &b) { if (len(a) != len(b)) return len(a) < len(b); int N = len(a); FOR_R(i, N) if (a[i] != b[i]) return a[i] < b[i]; return 0; } static bool greater(const vec &a, const vec &b) { return less(b, a); } static bool less_eq(const vec &a, const vec &b) { return not greater(a, b); } static bool greater_eq(const vec &a, const vec &b) { return not less(a, b); } static void sh(vec &a) { while (not a.empty() and a.back() == 0) pop(a); } static vec to_vec(ll x) { vec s; while (x) s.ep(x % M), x /= M; return s; } static ll to_ll(const vec &a) { ll s = 0; int N = len(a); FOR_R(i, N) s = s * M + a[i]; return s; } static i128 to_i128(const vec &a) { i128 s = 0; int N = len(a); FOR_R(i, N) s = s * M + a[i]; return s; } static string to_string(const vec &a) { string s; for (int x : a) FOR(n) s += '0' + x % 10, x /= 10; while (s.back() == '0') pop(s); return s; } static vec sum(const vec &a, const vec &b) { vec c(a); c.resize(max(len(a), len(b)) + 1); int N = len(b); FOR(i, N) c[i] += b[i]; N = len(c) - 1; FOR(i, N) if (c[i] >= M) c[i] -= M, ++c[i + 1]; return sh(c), c; } static vec sub(const vec &a, const vec &b) { vec c(a); int N = len(b); FOR(i, N) c[i] -= b[i]; N = len(a) - 1; FOR(i, N) if (c[i] < 0) c[i] += M, --c[i + 1]; return sh(c), c; } // 0 <= A < 1e18, 1 <= B > 1e9 static PVV divmod_ll_int(const vec &a, const vec &b) { assert(0 <= len(a) and len(a) <= 2); assert(len(b) == 1); ll x = to_ll(a); int y = b[0]; return {to_vec(x / y), to_vec(x % y)}; } // 0 <= A < 1e18, 1 <= B < 1e18 static PVV divmod_ll_ll(const vec &a, const vec &b) { assert(0 <= len(a) and len(a) <= 2); assert(1 <= len(b) and len(b) <= 2); ll x = to_ll(a), y = to_ll(b); return {to_vec(x / y), to_vec(x % y)}; } // 1 <= B < 1e9 static PVV divmod_1e9(const vec &a, const vec &b) { assert(len(b) == 1); if (len(a) <= 2) return divmod_ll_int(a, b); int N = len(a); vec s(N); ll d = 0; int bb = b[0]; FOR_R(i, N) { d = d * M + a[i]; assert(d <= 1ll * M * bb); int q = d / bb, r = d % bb; s[i] = q, d = r; } return sh(s), pair{s, d ? vec{int(d)} : vec{}}; } // 0 <= A, 1 <= B static PVV divmod_naive(const vec &a, const vec &b) { assert(not is_zero(b)); if (len(b) == 1) return divmod_1e9(a, b); if (max(len(a), len(b)) <= 2) return divmod_ll_ll(a, b); if (less(a, b)) return {{}, a}; // B >= 1e9, A >= B int norm = M / (b.back() + 1); vec x = mul(a, {norm}), y = mul(b, {norm}); int yb = y.back(); vec s(len(x) - len(y) + 1); vec r(x.end() - len(y), x.end()); int N = len(s); FOR_R(i, N) { if (len(r) < len(y)); else if (len(r) == len(y)) { if (less_eq(y, r)) s[i] = 1, r = sub(r, y); } else { assert(len(y) + 1 == len(r)); ll rb = 1ll * r.back() * M + r.end()[-2]; int q = rb / yb; vec yq = mul(y, {q}); while (less(r, yq)) --q, yq = sub(yq, y); r = sub(r, yq); while (less_eq(y, r)) ++q, r = sub(r, y); s[i] = q; } if (i) r.insert(r.begin(), x[i - 1]); } sh(s), sh(r); Z [ss, rr] = divmod_1e9(r, {norm}); assert(is_zero(rr)); return {s, ss}; }; // 1 / a を 絶対誤差 B^{-deg} で求める static vec keis_inv(const vec &a, int deg) { assert(not a.empty() and M / 2 <= a.back() and a.back() < M); int k = deg, N = len(a); while (k > 64) k = (k + 1) >> 1; vec b(N + k + 1); b.back() = 1; b = divmod_naive(b, a).fi; while (k < deg) { vec s = mul(b, b); s.insert(s.begin(), 0); int d = min(N, k * 2 + 1); vec t{a.end() - d, a.end()}, v = mul(s, t); v.erase(v.begin(), v.begin() + d); vec w(k + 1), ww = sum(b, b); copy(all(ww), back_inserter(w)); b = sub(w, v); b.erase(b.begin()); k <<= 1; } return b.erase(b.begin(), b.begin() + k - deg), b; } static PVV divmod_newton(const vec &a, const vec &b) { assert(not is_zero(b)); if (len(b) <= 64) return divmod_naive(a, b); if (len(a) - len(b) <= 64) return divmod_naive(a, b); int norm = M / (b.back() + 1); vec x = mul(a, {norm}), y = mul(b, {norm}); int N = len(x), m = len(y); int deg = N - m + 2; vec z = keis_inv(y, deg), q = mul(x, z); q.erase(q.begin(), q.begin() + m + deg); vec yq = mul(y, q); while (less(x, yq)) q = sub(q, {1}), yq = sub(yq, y); vec r = sub(x, yq); while (less_eq(y, r)) q = sum(q, {1}), r = sub(r, y); sh(q), sh(r); Z [qq, rr] = divmod_1e9(r, {norm}); assert(is_zero(rr)); return {std::move(q), std::move(qq)}; } }; bigint abs(const bigint &x) { return x.abs(); } bigint gcd(const bigint &a, const bigint &b) { return a.gcd(b); } bigint lcm(const bigint &a, const bigint &b) { return a.lcm(b); } #ifdef FIO void rd(bigint &x) { static string s; rd(s); x.from_str(s); } void wt(const bigint &x) { wt(x.to_string()); } #endif #line 5 "No_201_yukicoder\u3058\u3083\u3093\u3051\u3093.cpp" void Yorisou() { string s, t, c; bigint a, b; IN(s, a, c, t, b, c); if (a == b) print(-1); else print(a > b ? s : t); } constexpr int tests = 0, fl = 0, DB = 10; #line 1 "YRS/aa/main.hpp" int main() { cin.tie(0)->sync_with_stdio(0); int T = 1; if (fl) cerr.tie(0); if (tests and not fl) IN(T); for (int i = 0; i < T or fl; ++i) { Yorisou(); if (fl and i % DB == 0) cerr << "Case: " << i << '\n'; } return 0; } #line 15 "No_201_yukicoder\u3058\u3083\u3093\u3051\u3093.cpp"