#line 1 "No_148_\u8a66\u9a13\u76e3\u7763_3.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 OV4(a, b, c, d, e, ...) e #define FOR1(a) for (int _ = 0; _ < (a); ++_) #define FOR2(i, a) for (int i = 0; i < (a); ++i) #define FOR3(i, a, b) for (int i = (a); i < (b); ++i) #define FOR4(i, a, b, c) for (int i = (a); i < (b); i += (c)) #define FOR(...) OV4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__) #define FOR1_R(a) for (int _ = (a) - 1; _ >= 0; --_) #define FOR2_R(i, a) for (int i = (a) - 1; i >= 0; --i) #define FOR3_R(i, a, b) for (int i = (b) - 1; i >= (a); --i) #define FOR4_R(i, a, b, c) for (int i = (b) - 1; i >= (a); i -= (c)) #define FOR_R(...) OV4(__VA_ARGS__, FOR4_R, FOR3_R, FOR2_R, FOR1_R)(__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() { cout << ' '; } TES void put(T &&x, S &&...y) { cout << x; if constexpr (sizeof...(S)) cout << ' '; 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; #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) #define asser(...) void(0721) #endif #line 4 "No_148_\u8a66\u9a13\u76e3\u7763_3.cpp" // #include "YRS/IO/fast_io.hpp" // #include "YRS/random/rng.hpp" // #include "YRS/ds/basic/retsu.hpp" #line 2 "YRS/mod/mint.hpp" #line 2 "YRS/mod/modint_common.hpp" TE concept is_mint = requires(T x) { { T::get_mod() }; { T::gen(0ull) } -> same_as; x.val; }; TE concept has_const_mod = requires { integral_constant {}; }; TE static vc &invs() { static vc a{0, 1}; return a; } TE static vc &fac() { static vc a{1, 1}; return a; } TE static vc &ifac() { static vc a{1, 1}; return a; } TE static int Set_inv(int N) { static vc &inv = invs(); if (len(inv) >= N) return N; inv.resize(N + 1); inv[0] = 1, inv[1] = 1; FOR(i, 1, N) inv[i + 1] = inv[i] * i; T t = pop(inv).inv(); FOR_R(i, N) inv[i] *= t, t *= i; return N; } TE static int Set_comb(int N) { static vc &fa = fac(), &ifa = ifac(); if (len(fa) >= N) return N; fa.resize(N); ifa.resize(N); FOR(i, 1, N) fa[i] = fa[i - 1] * i; ifa[N - 1] = fa[N - 1].inv(); FOR_R(i, N - 1) ifa[i] = ifa[i + 1] * (i + 1); return N; } template mint inv(int n) { static const int mod = mint::get_mod(); static vc &a = invs(); assert(0 <= n); while (len(a) <= n) { int k = len(a); int q = (mod + k - 1) / k; int r = k * q - mod; a.ep(a[r] * mint(q)); } return a[n]; } template mint fact(int n) { static const int mod = mint::get_mod(); static vc &a = fac(); assert(0 <= n); if (n >= mod) return 0; while (len(a) <= n) { int k = len(a); a.ep(a[k - 1] * mint(k)); } return a[n]; } template mint fact_inv(int n) { static vc &a = ifac(); if (n < 0) return mint(0); while (len(a) <= n) a.ep(a[len(a) - 1] * inv(len(a))); return a[n]; } template mint fact_invs(Ts... xs) { return (mint(1) * ... * fact_inv(xs)); } template mint multinomial(X&& a, S&&... b) { return fact(a) * fact_invs(forward(b)...); } template mint C_dense(int n, int k) { assert(n >= 0); if (k < 0 or n < k) return 0; static vc> C; static int H = 0, W = 0; Z calc = [&](int i, int j) -> mint { if (i == 0) return(j == 0 ? mint(1) : mint(0)); return C[i - 1][j] + (j ? C[i - 1][j - 1] : 0); }; if (W <= k) { for (int i = 0; i < H; ++i) { C[i].resize(k + 1); for (int j = W; j < k + 1; ++j) { C[i][j] = calc(i, j); } } W = k + 1; } if (H <= n) { C.resize(n + 1); for (int i = H; i < n + 1; ++i) { C[i].resize(W); for (int j = 0; j < W; ++j) { C[i][j] = calc(i, j); } } H = n + 1; } return C[n][k]; } template mint C(int N, int K) { assert(N >= 0); if (K < 0 or N < K) return 0; return fact(N) * fact_inv(K) * fact_inv(N - K); } template mint lucas(ll N, ll K) { static constexpr int P = mint::get_mod(); if (K > N) return 0; if (K == 0) return 1; return C(N % P, K % P) * lucas(N / P, K / P); } template mint binom(ll n, ll k) { assert(n >= 0); if (k < 0 or n < k) return 0; if constexpr (dense) return C_dense(n, k); if constexpr (not large) return multinomial(n, k, n - k); k = min(k, n - k); mint x(1); FOR(i, k) x *= mint(n - i); return x * fact_inv(k); } template mint C_inv(ll n, ll k) { assert(n >= 0); assert(0 <= k and k <= n); if (not large) return fact_inv(n) * fact(k) * fact(n - k); return mint(1) / binom(n, k); } // [x^d](1-x)^{-n} template mint C_negative(ll n, ll d) { assert(n >= 0); if (d < 0) return mint(0); if (n == 0) return (d == 0 ? mint(1) : mint(0)); return binom(n + d - 1, d); } #define fac fact #define ifac fact_inv #define CC C #define set_comb Set_comb #define set_inv Set_inv #line 4 "YRS/mod/mint.hpp" #define C constexpr template struct mint_t { using mint = 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 mint &operator+=(mint p) { if ((x += p.x) >= m) x -= m; return *this; } C mint &operator-=(mint p) { if ((x += m - p.x) >= m) x -= m; return *this; } C mint operator+(mint p) const { return mint(*this) += p; } C mint operator-(mint p) const { return mint(*this) -= p; } C mint &operator*=(mint p) { x = ull(x) * p.x % m; return *this; } C mint operator*(mint p) const { return mint(*this) *= p; } C mint &operator/=(mint p) { return *this *= p.inv(); } C mint operator/(mint p) const { return mint(*this) /= p; } C mint operator-() const { return mint::gen(x ? mod - x : 0); } C mint 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 mint(x); } C mint pow(ll k) const { if (k < 0) return inv().pow(-k); mint s(1), a(x); for (; k; k >>= 1, a *= a) if (k & 1) s *= a; return s; } C bool operator<(mint p) const { return x < p.x; } C bool operator==(mint p) const { return x == p.x; } C bool operator!=(mint p) const { return x != p.x; } static C mint gen(uint x) { mint s; s.x = x; return s; } friend istream &operator>>(istream &cin, mint &p) { ll t; cin >> t; p = t; return cin; } friend ostream &operator<<(ostream &cout, mint 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 2 "YRS/po/f/fac_tt.hpp" #line 2 "YRS/po/bs.hpp" #line 2 "YRS/po/c/inte.hpp" #line 4 "YRS/po/c/inte.hpp" // 不定积分 template vc inte(const vc &f) { int N = len(f); vc g(N + 1); FOR(i, 1, N + 1) g[i] = f[i - 1] * inv(i); return g; } // 定积分 template mint inte(const vc &f, mint l, mint r) { mint 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 2 "YRS/po/c/diff.hpp" #line 4 "YRS/po/c/diff.hpp" template vc diff(const vc &f) { int N = len(f); if (N <= 1) return {}; vc g(N - 1); FOR(i, N - 1) g[i] = f[i + 1] * mint(i + 1); return g; } #line 2 "YRS/po/convolution.hpp" #line 2 "YRS/po/c/ntt.hpp" #line 4 "YRS/po/c/ntt.hpp" template void ntt(vc &a, bool in) { assert(mint::can_ntt()); const int p = mint::ntt_info().fi; const uint m = mint::get_mod(); static array r, ir, ra, ira, rat, irat; assert(p != -1 and len(a) <= (1 << max(0, p))); static bool ok = 0; if (not ok) { ok = 1; r[p] = mint::ntt_info().se; ir[p] = mint(1) / r[p]; FOR_R(i, p) { r[i] = r[i + 1] * r[i + 1]; ir[i] = ir[i + 1] * ir[i + 1]; } mint s = 1, in = 1; FOR(i, p - 1) { ra[i] = r[i + 2] * s; ira[i] = ir[i + 2] * in; s *= ir[i + 2]; in *= r[i + 2]; } s = 1, in = 1; FOR(i, p - 2) { rat[i] = r[i + 3] * s; irat[i] = ir[i + 3] * in; s *= ir[i + 3]; in *= r[i + 3]; } } 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); mint c = 1; FOR(s, 1 << sz) { int of = s << (n - sz); FOR(i, p) { mint l = a[i + of], r = a[i + of + p] * c; a[i + of] = l + r, a[i + of + p] = l - r; } c *= ra[topbit(~s & -~s)]; } ++sz; } else { int p = 1 << (n - sz - 2); mint c = 1, in = r[2]; FOR(s, 1 << sz) { mint r2 = c * c, r3 = r2 * c; int of = s << (n - sz); FOR(i, p) { const ull mm = ull(m) * m; ull a0 = a[i + of].val(), a1 = ull(a[i + of + p].val()) * c.val(); ull aa = ull(a[i + of + 2 * p].val()) * r2.val(); ull bb = ull(a[i + of + 3 * p].val()) * r3.val(); ull t = (a1 + mm - bb) % m * in.val(); ull na = mm - aa; a[i + of] = a0 + a1 + aa + bb; a[i + of + p] = a0 + aa + mm * 2 - a1 - bb; a[i + of + 2 * p] = a0 + na + t; a[i + of + 3 * p] = a0 + na + mm - t; } c *= rat[topbit(~s & -~s)]; } sz += 2; } } } else { mint c = mint(1) / mint(N); FOR(i, N) a[i] *= c; int sz = n; while (sz) { if (sz == 1) { int p = 1 << (n - sz); mint c = 1; FOR(s, 1 << (sz - 1)) { int of = s << (n - sz + 1); FOR(i, p) { ull l = a[i + of].val(), r = a[i + of + p].val(); a[i + of] = l + r; a[i + of + p] = (m + l - r) * c.val(); } c *= ira[topbit(~s & -~s)]; } --sz; } else { int p = 1 << (n - sz); mint c = 1, in = ir[2]; FOR(s, 1 << (sz - 2)) { mint r2 = c * c, r3 = r2 * c; int of = s << (n - sz + 2); FOR(i, p) { ull a0 = a[i + of].val(), a1 = a[i + of + p].val(); ull aa = a[i + of + 2 * p].val(); ull bb = a[i + of + 3 * p].val(); ull x = (m + aa - bb) * in.val() % m; a[i + of] = a0 + a1 + aa + bb; a[i + of + p] = (a0 + m - a1 + x) * c.val(); a[i + of + 2 * p] = (a0 + a1 + 2 * m - aa - bb) * r2.val(); a[i + of + 3 * p] = (a0 + 2 * m - a1 - x) * r3.val(); } c *= irat[topbit(~s & -~s)]; } sz -= 2; } } } } #line 2 "YRS/mod/crt3.hpp" constexpr uint pw_c(ull a, ull b, uint mod) { a %= mod; ull res = 1; FOR(32) { if (b & 1) res = res * a % mod; a = a * a % mod, b >>= 1; } return res; } template T crt(ull a0, ull a1) { static_assert(p0 < p1); static constexpr ull x0_1 = pw_c(p0, p1 - 2, p1); ull c = (a1 - a0 + p1) * x0_1 % p1; return a0 + c * p0; } template T crt(ull a0, ull a1, ull a2) { static_assert(p0 < p1 and p1 < p2); static constexpr ull x1 = pw_c(p0, p1 - 2, p1); static constexpr ull x2 = pw_c(ull(p0) * p1 % p2, p2 - 2, p2); static constexpr ull p01 = ull(p0) * p1; ull c = (a1 - a0 + p1) * x1 % p1; ull ans_1 = a0 + c * p0; c = (a2 - ans_1 % p2 + p2) * x2 % p2; return T(ans_1) + T(c) * T(p01); } template T crt(ull a0, ull a1, ull a2, ull a3) { static_assert(p0 < p1 and p1 < p2 and p2 < p3); static constexpr ull x1 = pw_c(p0, p1 - 2, p1); static constexpr ull x2 = pw_c(ull(p0) * p1 % p2, p2 - 2, p2); static constexpr ull x3 = pw_c(ull(p0) * p1 % p3 * p2 % p3, p3 - 2, p3); static constexpr ull p01 = ull(p0) * p1; ull c = (a1 - a0 + p1) * x1 % p1; ull ans_1 = a0 + c * p0; c = (a2 - ans_1 % p2 + p2) * x2 % p2; u128 ans_2 = ans_1 + c * u128(p01); c = (a3 - ans_2 % p3 + p3) * x3 % p3; return T(ans_2) + T(c) * T(p01) * T(p2); } template T crt(ull a0, ull a1, ull a2, ull a3, ull a4) { static_assert(p0 < p1 and p1 < p2 and p2 < p3 and p3 < p4); static constexpr ull x1 = pw_c(p0, p1 - 2, p1); static constexpr ull x2 = pw_c(ull(p0) * p1 % p2, p2 - 2, p2); static constexpr ull x3 = pw_c(ull(p0) * p1 % p3 * p2 % p3, p3 - 2, p3); static constexpr ull x4 = pw_c(ull(p0) * p1 % p4 * p2 % p4 * p3 % p4, p4 - 2, p4); static constexpr ull p01 = ull(p0) * p1; static constexpr ull p23 = ull(p2) * p3; ull c = (a1 - a0 + p1) * x1 % p1; ull ans_1 = a0 + c * p0; c = (a2 - ans_1 % p2 + p2) * x2 % p2; u128 ans_2 = ans_1 + c * u128(p01); c = ull(a3 - ans_2 % p3 + p3) * x3 % p3; u128 ans_3 = ans_2 + u128(c * p2) * p01; c = ull(a4 - ans_3 % p4 + p4) * x4 % p4; return T(ans_3) + T(c) * T(p01) * T(p23); } #line 5 "YRS/po/convolution.hpp" TE vc conv_naive(const vc &a, const vc &b) { 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); vc c(sz); FOR(i, N) FOR(k, M) c[i + k] += a[i] * b[k]; return c; } TE vc conv_kara(const vc &f, const vc &g) { 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); vc 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()}; vc a = conv_kara(f1, g1); vc b = conv_kara(f2, g2); FOR(i, len(f2)) f1[i] += f2[i]; FOR(i, len(g2)) g1[i] += g2[i]; vc c = conv_kara(f1, g1); vc 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 vc conv_ntt(vc a, vc b) { assert(T::can_ntt()); if (a.empty() or b.empty()) return {}; int N = len(a), M = len(b), sz = 1; while (sz < N + M - 1) sz <<= 1; sh(a, sz), sh(b, sz); bool ok = a == b; ntt(a, 0); if (ok) b = a; else ntt(b, 0); FOR(i, sz) a[i] *= b[i]; ntt(a, 1); sh(a, N + M - 1); return a; } TE vc conv_mtt(const vc &a, const vc &b) { int N = len(a), M = len(b); if (not N or not M) return {}; static constexpr int p0 = 167772161; static constexpr int p1 = 469762049; static constexpr int p2 = 754974721; using M0 = mint_t; using M1 = mint_t; using M2 = mint_t; vc a0(N), b0(M); vc a1(N), b1(M); vc 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(); vc c0 = conv_ntt(a0, b0); vc c1 = conv_ntt(a1, b1); vc c2 = conv_ntt(a2, b2); vc c(len(c0)); FOR(i, N + M - 1) c[i] = crt(c0[i].val(), c1[i].val(), c2[i].val()); return c; } TE vc convolution(const vc &a, const vc &b) { int N = len(a), M = len(b); if (not N or not M) 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); } #line 6 "YRS/po/bs.hpp" TE inline vc &operator+=(vc &a, const vc &b) { int N = len(b); if (N > len(a)) sh(a, N); FOR(i, N) a[i] += b[i]; return a; } TE inline vc operator+(const vc &a, const vc &b) { vc c(a); return c += b; } TE inline vc &operator-=(vc &a, const vc &b) { int N = len(b); if (N > len(a)) sh(a, N); FOR(i, N) a[i] -= b[i]; return a; } TE inline vc operator-(const vc &a, const vc &b) { vc c(a); return c -= b; } TE inline vc operator*(const vc &a, const vc &b) { return convolution(a, b); } #define D_poly() vc operator"" _p(ull x) { return vc{x}; } vc operator"" _p(const char *s, size_t le) {vc res;int sgn = 1, op = 0, coef = 0, ch = 0, sz = le;ll x = 0;Z re = [&](int i) {if (len(res) <= i) res.resize(i + 1);};Z cl = [&]() {if (op == -1) re(1), res[1] += sgn * coef;else if (op == 0) re(0), res[0] += sgn * (int)x;else if (op == 1) re(x), res[x] += sgn * coef;else assert(0);op = 0, x = 0, ch = 0;};FOR(i, sz) {if (s[i] == '+') cl(), sgn = 1;else if (s[i] == '-') cl(), sgn = -1;else if (isdigit(s[i])) {assert(op == 0 or op == 1);if (op == 0) ch = 1, x = (x * 10ll + s[i] - 48) % T::get_mod();else x = x * 10ll + s[i] - 48, assert(x < 1e8);} else if (s[i] == 'x') {assert(s[i + 1] == '^' or s[i + 1] == '+' or s[i + 1] == '-' or s[i + 1] == 0);op = -1;coef = ch ? x : 1;x = 0;} else if (s[i] == '^') {assert(op == -1);op = 1;}}cl();return res; } #line 2 "YRS/po/lag.hpp" #line 4 "YRS/po/lag.hpp" // iota one https://yukicoder.me/problems/no/42 TE T lag_inte_iota(const vc &f, T c) { int N = len(f); if ((int)c.val() < N) return f[c.val()]; Z a = f; FOR(i, N) { a[i] = a[i] * ifac(i) * ifac(N - 1 - i); if ((N - 1 - i) & 1) a[i] = -a[i]; } vc l(N + 1), r(N + 1); l[0] = r[N] = 1; FOR(i, N) l[i + 1] = l[i] * (c - i); FOR_R(i, N) r[i] = r[i + 1] * (c - i); T s = 0; FOR(i, N) s += a[i] * l[i] * r[i + 1]; return s; } TE vc lag_inte_iota(vc &f, T c, int sz) { struct swag { int sz = 0; vc f, g{1}; T s = 1; void push(T x) { ++sz; s *= x; f.ep(x); } void pop() { --sz; g.pop_back(); if (g.empty()) { g.ep(1); s = 1; while (len(f) > 1) g.ep(::pop(f) * g.back()); f.pop_back(); } } T prod() { return g.back() * s; } } seg; if (sz < 60) { vc s(sz); FOR(i, sz) s[i] = lag_inte_iota(f, c + i); return s; } int N = len(f); vc a = f; FOR(i, N) { a[i] = a[i] * ifac(i) * ifac(N - i - 1); if ((N - 1 - i) & 1) a[i] = -a[i]; } vc b(N + sz - 1); FOR(i, N + sz - 1) b[i] = T(1) / (c + T(i - N + 1)); a = a * b; vc s(sz); int l = 0, r = 0; FOR(i, sz) { while (l < i) seg.pop(), ++l; while (r - l < N) seg.push(c + T(r - N + 1)), ++r; T x = seg.prod(); if (x == T(0)) s[i] = f[(c + i).val()]; else s[i] = a[N + i - 1] * x; } return s; } TE T lag_inte(vc x, vc y, T p) { assert(len(x) == len(y)); int N = len(x); T s = 0; FOR(i, N) { T g = 1; FOR(k, N) if (i != k) g *= x[k] - x[i]; g = g.inv() * y[i]; FOR(k, N) if (i != k) g *= x[k] - p; s += g; } return s; } #line 5 "YRS/po/f/fac_tt.hpp" template struct fac_large { const int sz = 1 << lg, b = T::get_mod() >> lg, lm = 2'0000; vc bfa; fac_large() { build(); } T operator[](int n) const { return n <= lm ? fac(n) : fa(n); } T fa(int n) const { T s; int q = n / sz, r = n % sz; if (2 * r <= sz) { s = bfa[q]; FOR(i, r) s *= T(n - i); } else if (q != b) { s = bfa[q + 1]; T c = 1; FOR(i, 1, sz - r + 1) c *= T(n + i); s /= c; } else { s = T::get_mod() - 1; T c = 1; FOR_R(i, n, T::get_mod()) c *= T(i); s /= c; } return s; } T ifa(int n) const { return n <= lm ? ifac(n) : fa(n).inv(); } T binom(int n, int k) const { return fa(n) * ifa(k) * ifa(n - k); } T prem(int n, int k) const { if (k < 0 or k > n) return 0; return fa(n) * ifa(n - k); } void build() { vc f{1}; f.reserve(sz); FOR(i, lg) { vc g = lag_inte_iota(f, 1 << i, 3 << i); const Z ge = [&](int j) { return j < (1 << i) ? f[j] : g[j - (1 << i)]; }; sh(f, 2 << i); FOR(j, 2 << i) { f[j] = ge(j << 1) * ge(j << 1 | 1) * ((j << 1 | 1) << i); } } if (b > sz) { vc g = lag_inte_iota(f, sz, b - sz); move(all(g), back_inserter(f)); } else sh(f, b); FOR(i, b) f[i] *= T(i + 1) * sz; f.insert(f.begin(), 1); FOR(i, 1, b + 1) f[i] *= f[i - 1]; bfa = move(f); } }; #line 1 "YRS/aa/def.hpp" #ifdef fac #undef fac #undef ifac #endif #define fac fact #define ifac fact_inv #line 10 "No_148_\u8a66\u9a13\u76e3\u7763_3.cpp" using mint = M17; constexpr ll mod = mint::get_mod(); void Yorisou() { INT(Q); fac_large x; FOR(Q) { STR(C, P); if (len(P) <= 10) { ll p = stoll(P), c = 0; for (char x : C) { c = c * 10 + x - '0'; if (c >= 2 * mod) c = c % mod + 2 * mod; } if (p < mod and c >= 2 * p - 1) { c = mint(c + 1 - p).val(); if (c >= p) print(x[c] / x[c - p]); else print(0); } else print(0); } else print(0); } } constexpr int tests = 0, fl = 0, DB = 10; #line 1 "YRS/aa/main.hpp" int main() { cin.tie(nullptr)->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 34 "No_148_\u8a66\u9a13\u76e3\u7763_3.cpp"