// 勝ちました #include #include #include #include #define overload4(_1, _2, _3, _4, name, ...) name #define rep1(i, n) for (ll i = 0; i < ll(n); ++i) #define rep2(i, s, n) for (ll i = ll(s); i < ll(n); ++i) #define rep3(i, s, n, d) for(ll i = ll(s); i < ll(n); i+=d) #define rep(...) overload4(__VA_ARGS__,rep3,rep2,rep1)(__VA_ARGS__) #define rrep1(i, n) for (ll i = ll(n)-1; i >= 0; i--) #define rrep2(i, n, t) for (ll i = ll(n)-1; i >= (ll)t; i--) #define rrep3(i, n, t, d) for (ll i = ll(n)-1; i >= (ll)t; i-=d) #define rrep(...) overload4(__VA_ARGS__,rrep3,rrep2,rrep1)(__VA_ARGS__) #define all(a) a.begin(),a.end() #define rall(a) a.rbegin(),a.rend() #define SUM(a) accumulate(all(a),0LL) #define MIN(a) *min_element(all(a)) #define MAX(a) *max_element(all(a)) #define SORT(a) sort(all(a)); #define REV(a) reverse(all(a)); #define SZ(a) int(a.size()) #define popcount(x) __builtin_popcountll(x) #define pf push_front #define pb push_back #define ef emplace_front #define eb emplace_back #define ppf pop_front #define ppb pop_back #ifdef __LOCAL #define debug(...) { cout << #__VA_ARGS__; cout << ": "; print(__VA_ARGS__); cout << flush; } #else #define debug(...) void(0); #endif #define INT(...) int __VA_ARGS__;scan(__VA_ARGS__) #define LL(...) ll __VA_ARGS__;scan(__VA_ARGS__) #define STR(...) string __VA_ARGS__;scan(__VA_ARGS__) #define CHR(...) char __VA_ARGS__;scan(__VA_ARGS__) #define DBL(...) double __VA_ARGS__;scan(__VA_ARGS__) #define LD(...) ld __VA_ARGS__;scan(__VA_ARGS__) using namespace std; using namespace __gnu_pbds; using ll = long long; using ld = long double; using P = pair; using LP = pair; using vi = vector; using vvi = vector; using vvvi = vector; using vl = vector; using vvl = vector; using vvvl = vector; using vd = vector; using vvd = vector; using vs = vector; using vc = vector; using vvc = vector; using vb = vector; using vvb = vector; using vp = vector

; using vvp = vector; template using PQ = priority_queue, vector>, greater>>; template istream &operator>>(istream &is, pair &p) { return is >> p.first >> p.second; } template ostream &operator<<(ostream &os, const pair &p) { return os << '{' << p.first << ", " << p.second << '}'; } template istream &operator>>(istream &is, tuple &t) { return is >> get<0>(t) >> get<1>(t) >> get<2>(t); } template ostream &operator<<(ostream &os, const tuple &t) { return os << '{' << get<0>(t) << ", " << get<1>(t) << ", " << get<2>(t) << '}'; } template istream &operator>>(istream &is, vector &v) { for (T &t: v) { is >> t; } return is; } template ostream &operator<<(ostream &os, const vector &v) { os << '['; rep(i, v.size()) os << v[i] << (i == int(v.size() - 1) ? "" : ", "); return os << ']'; } template ostream &operator<<(ostream &os, const deque &v) { os << '['; rep(i, v.size()) os << v[i] << (i == int(v.size() - 1) ? "" : ", "); return os << ']'; } template ostream &operator<<(ostream &os, const set &st) { os << '{'; auto it = st.begin(); while (it != st.end()) { os << (it == st.begin() ? "" : ", ") << *it; it++; } return os << '}'; } template ostream &operator<<(ostream &os, const multiset &st) { os << '{'; auto it = st.begin(); while (it != st.end()) { os << (it == st.begin() ? "" : ", ") << *it; it++; } return os << '}'; } template ostream &operator<<(ostream &os, const map &mp) { os << '{'; auto it = mp.begin(); while (it != mp.end()) { os << (it == mp.begin() ? "" : ", ") << *it; it++; } return os << '}'; } template void vecout(const vector &v, char div = '\n') { rep(i, v.size()) cout << v[i] << (i == int(v.size() - 1) ? '\n' : div); } template bool constexpr chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; } template bool constexpr chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; } void scan() {} template void scan(Head &head, Tail &... tail) { cin >> head; scan(tail...); } template void print(const T &t) { cout << t << '\n'; } template void print(const Head &head, const Tail &... tail) { cout << head << ' '; print(tail...); } template void fin(const T &... a) { print(a...); exit(0); } template vector &operator+=(vector &v, T x) { for (T &t: v) t += x; return v; } template vector &operator-=(vector &v, T x) { for (T &t: v) t -= x; return v; } template vector &operator*=(vector &v, T x) { for (T &t: v) t *= x; return v; } template vector &operator/=(vector &v, T x) { for (T &t: v) t /= x; return v; } struct Init_io { Init_io() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); cout << boolalpha << fixed << setprecision(15); cerr << boolalpha << fixed << setprecision(15); } } init_io; const string yes[] = {"no", "yes"}; const string Yes[] = {"No", "Yes"}; const string YES[] = {"NO", "YES"}; const int inf = 1001001001; const ll linf = 1001001001001001001; void rearrange(const vi &) {} template void rearrange(const vi &ord, vector &head, Tail &...tail) { assert(ord.size() == head.size()); vector ori = head; rep(i, ord.size()) head[i] = ori[ord[i]]; rearrange(ord, tail...); } template void sort_by(vector &head, Tail &... tail) { vi ord(head.size()); iota(all(ord), 0); sort(all(ord), [&](int i, int j) { return head[i] < head[j]; }); rearrange(ord, head, tail...); } template vector cumsum(const vector &v, bool shift_one = true) { int n = v.size(); vector res; if (shift_one) { res.resize(n + 1); rep(i, n) res[i + 1] = res[i] + v[i]; } else { res.resize(n); if (n) { res[0] = v[0]; rep(i, 1, n) res[i] = res[i - 1] + v[i]; } } return res; } vvi graph(int n, int m, bool directed = false, int origin = 1) { vvi G(n); rep(_, m) { INT(u, v); u -= origin, v -= origin; G[u].pb(v); if (!directed) G[v].pb(u); } return G; } template vector>> weighted_graph(int n, int m, bool directed = false, int origin = 1) { vector>> G(n); rep(_, m) { int u, v; T w; scan(u, v, w); u -= origin, v -= origin; G[u].eb(v, w); if (!directed) G[v].eb(u, w); } return G; } template class modint { ll x; public: constexpr modint(ll x = 0) : x((x % mod + mod) % mod) {} static constexpr int get_mod() { return mod; } constexpr int val() const { return x; } constexpr modint operator-() const { return modint(-x); } constexpr modint &operator+=(const modint &a) { if ((x += a.val()) >= mod) x -= mod; return *this; } constexpr modint &operator++() { return *this += 1; } constexpr modint &operator-=(const modint &a) { if ((x += mod - a.val()) >= mod) x -= mod; return *this; } constexpr modint &operator--() { return *this -= 1; } constexpr modint &operator*=(const modint &a) { (x *= a.val()) %= mod; return *this; } constexpr modint operator+(const modint &a) const { modint res(*this); return res += a; } constexpr modint operator-(const modint &a) const { modint res(*this); return res -= a; } constexpr modint operator*(const modint &a) const { modint res(*this); return res *= a; } constexpr modint pow(ll t) const { modint res = 1, a(*this); while (t > 0) { if (t & 1) res *= a; t >>= 1; a *= a; } return res; } template friend istream &operator>>(istream &, modint &); // for prime mod constexpr modint inv() const { return pow(mod - 2); } constexpr modint &operator/=(const modint &a) { return *this *= a.inv(); } constexpr modint operator/(const modint &a) const { modint res(*this); return res /= a; } }; using modint998244353 = modint<998244353>; using modint1000000007 = modint<1000000007>; template istream &operator>>(istream &is, modint &a) { return is >> a.x; } template constexpr ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); } template constexpr bool operator==(const modint &a, const modint &b) { return a.val() == b.val(); } template constexpr bool operator!=(const modint &a, const modint &b) { return a.val() != b.val(); } template constexpr modint &operator++(modint &a) { return a += 1; } template constexpr modint &operator--(modint &a) { return a -= 1; } using mint = modint998244353; using vm = vector; using vvm = vector; class NTT { int pr; constexpr ll pow_mod(ll x, ll n, int m) { if (m == 1) return 0; ll res = 1; ll now = x % m; while (n > 0) { if (n & 1) res = (res * now) % m; now = (now * now) % m; n >>= 1; } return res; } constexpr int primitive_root(int mod) { if (mod == 2) return 1; if (mod == 167772161) return 3; if (mod == 469762049) return 3; if (mod == 754974721) return 11; if (mod == 998244353) return 3; int divs[20] = {}; divs[0] = 2; int cnt = 1; int x = (mod - 1) / 2; while (x % 2 == 0) x /= 2; for (int i = 3; (ll) i * i <= x; i += 2) { if (x % i == 0) { divs[cnt++] = i; while (x % i == 0) { x /= i; } } } if (x > 1) divs[cnt++] = x; for (int g = 2;; g++) { bool ok = true; for (int i = 0; i < cnt; i++) { if (pow_mod(g, (mod - 1) / divs[i], mod) == 1) { ok = false; break; } } if (ok) return g; } } public: NTT() { init(mint::get_mod()); } mint sum_e[30]; // sum_e[i] = ies[0] * ... * ies[i - 1] * es[i] mint sum_ie[30]; // sum_ie[i] = es[0] * ... * es[i - 1] * ies[i] void init(int mod) { pr = primitive_root(mod); mint es[30], ies[30]; // es[i]^(2^(2+i)) == 1 int cnt2 = __builtin_ctz(mint::get_mod() - 1); mint e = mint(pr).pow((mint::get_mod() - 1) >> cnt2), ie = e.inv(); for (int i = cnt2; i >= 2; i--) { // e^(2^i) == 1 es[i - 2] = e; ies[i - 2] = ie; e *= e; ie *= ie; } mint now = 1; for (int i = 0; i <= cnt2 - 2; i++) { sum_e[i] = es[i] * now; now *= ies[i]; } now = 1; for (int i = 0; i <= cnt2 - 2; i++) { sum_ie[i] = ies[i] * now; now *= es[i]; } } void operator()(vm &a, bool inverse = false) { int n = a.size(); int h = __builtin_ctz(n); if (inverse) { rrep(ph, h + 1, 1) { int w = 1 << (ph - 1), p = 1 << (h - ph); mint now = 1; rep(s, w) { int offset = s << (h - ph + 1); rep(i, p) { auto l = a[i + offset]; auto r = a[i + offset + p]; a[i + offset] = l + r; a[i + offset + p] = (l - r) * now; } now *= sum_ie[__builtin_ctz(~(unsigned int) (s))]; } } mint iv = mint(n).inv(); rep(i, n) a[i] *= iv; } else { rep(ph, 1, h + 1) { int w = 1 << (ph - 1), p = 1 << (h - ph); mint now = 1; rep(s, w) { int offset = s << (h - ph + 1); rep(i, p) { auto l = a[i + offset]; auto r = a[i + offset + p] * now; a[i + offset] = l + r; a[i + offset + p] = l - r; } now *= sum_e[__builtin_ctz(~(unsigned int) (s))]; } } } } } ntt; class fps : public vector { static fps convolution(const fps &a, const fps &b) { if (a.empty()) return {}; if (b.empty()) return {}; int s = a.size() + b.size() - 1; if (min(a.size(), b.size()) <= 50) { fps res(s); if (a.size() >= b.size()) { rep(i, a.size()) rep(j, b.size()) res[i + j] += a[i] * b[j]; } else { rep(j, b.size()) rep(i, a.size()) res[i + j] += a[i] * b[j]; } return res; } int t = 1; while (t < s) t *= 2; fps A(t), B(t); rep(i, a.size()) A[i] = a[i]; rep(i, b.size()) B[i] = b[i]; ntt(A); ntt(B); rep(i, t) A[i] *= B[i]; ntt(A, true); A.resize(s); return A; } public: using vector::vector; mint eval(mint x) const { mint res = 0; mint now = 1; rep(i, this->size()) { res += (*this)[i] * now; now *= x; } return res; } // return f'(x) fps differ() const { int n = this->size(); fps res(n - 1); rep2(i, 1, n) res[i - 1] = (*this)[i] * i; return res; } // return ∫ f(x)dx fps integral() const { int n = this->size(); if (n == 0) return fps(); fps res(n + 1); rep(i, n) res[i + 1] = (*this)[i] / (i + 1); return res; }; fps &operator+=(const fps &a) { if (this->size() < a.size()) this->resize(a.size()); rep(i, a.size()) (*this)[i] += a[i]; return *this; } fps &operator-=(const fps &a) { if (this->size() < a.size()) this->resize(a.size()); rep(i, a.size()) (*this)[i] -= a[i]; return *this; } fps &operator*=(const fps &a) { return *this = fps::convolution(*this, a); } fps &operator*=(mint k) { rep(i, this->size()) (*this)[i] *= k; return *this; } fps operator+(const fps &a) const { fps res(*this); return res += a; } fps operator-(const fps &a) const { fps res(*this); return res -= a; } fps operator*(const fps &a) const { fps res(*this); return res *= a; } fps operator*(mint k) const { fps res(*this); return res *= k; } // // P /= (ax + b) // constexpr void divide(T a = 0, T b = 1) { // int n = this->size(); // assert(n >= 2); // assert(a != 0 or b != 0); // if (b == T(0)) { // assert((*this)[0] == T(0)); // T inv = T(1) / a; // rep(i, n - 1) (*this)[i] = (*this)[i + 1] * inv; // this->back() = T(0); // } else { // T inv = T(1) / b; // rep(i, n - 1) { // (*this)[i] *= inv; // (*this)[i + 1] -= (*this)[i] * a; // } // assert(this->back() == T(0)); // } // } // reference of inv, log, exp, pow : https://opt-cp.com/fps-fast-algorithms/ fps inv(int deg = -1) const { int n = this->size(); assert(n and (*this)[0].val() == 1); if (deg == -1) deg = n; fps res(deg); res[0] = (*this)[0].inv(); for (int m = 1; m < deg; m <<= 1) { fps f(2 * m), g(2 * m); rep(i, min(n, 2 * m)) f[i] = (*this)[i]; rep(i, m) g[i] = res[i]; ntt(f), ntt(g); rep(i, 2 * m) f[i] *= g[i]; ntt(f, true); rep(i, m) f[i] = 0; ntt(f); rep(i, 2 * m) f[i] *= g[i]; ntt(f, true); rep(i, m, min(2 * m, deg)) res[i] = -f[i]; } return res; } fps ÷_inplace(const fps &a, int d = -1) { int n = this->size(); if (d == -1) d = n; assert(d >= 0); *this = convolution(move(*this), a.inv(d)); this->resize(d); return *this; } fps divide(const fps &a, int d = -1) { fps res(*this); return res.divide_inplace(a, d); } fps log(int deg = -1) const { int n = this->size(); assert(n and (*this)[0].val() == 1); if (deg == -1) deg = n; fps res(this->differ()); res.divide_inplace(*this, deg); res = res.integral(); res.pop_back(); return res; } fps exp(int deg = -1) const { int n = this->size(); assert(n and (*this)[0].val() == 0); if (deg == -1) deg = n; fps g{1}, g_fft, f(*this); f.resize(deg); f[0] = 1; fps h_prime(this->differ()); h_prime.pb(0); for (int m = 1; m < deg; m *= 2) { // prepare fps f_fft(f.begin(), f.begin() + m); f_fft.resize(2 * m); ntt(f_fft); // Step 2.a' if (m > 1) { fps _f(m); rep(i, m) _f[i] = f_fft[i] * g_fft[i]; ntt(_f, true); _f.erase(_f.begin(), _f.begin() + m / 2); _f.resize(m), ntt(_f); rep(i, m) _f[i] *= g_fft[i]; ntt(_f, true); _f.resize(m / 2); _f *= -1; g.insert(g.end(), _f.begin(), _f.begin() + m / 2); } // Step 2.b'--d' fps t(f.begin(), f.begin() + m); t = t.differ(); t.pb(0); { // Step 2.b' fps r(h_prime.begin(), h_prime.begin() + m - 1); // Step 2.c' r.resize(m); ntt(r); rep(i, m) r[i] *= f_fft[i]; ntt(r, true); // Step 2.d' t -= r; t.insert(t.begin(), t.back()); t.pop_back(); } // Step 2.e' t.resize(2 * m); ntt(t); g_fft = g; g_fft.resize(2 * m); ntt(g_fft); rep(i, 2 * m) t[i] *= g_fft[i]; ntt(t, true); t.resize(m); // Step 2.f' fps v(f.begin() + m, f.begin() + min(deg, 2 * m)); v.resize(m); t.insert(t.begin(), m - 1, 0); t.push_back(0); t = t.integral(); rep(i, m) v[i] -= t[m + i]; // Step 2.g' v.resize(2 * m); ntt(v); rep(i, 2 * m) v[i] *= f_fft[i]; ntt(v, true); v.resize(m); // Step 2.h' rep(i, min(deg - m, m)) f[m + i] = v[i]; } return f; } fps pow(ll k, int deg = -1) const { int n = this->size(); if (deg == -1) deg = n; assert(k >= 0); if (k == 0) { fps res(deg); if (deg > 0) res[0] = 1; return res; } int l = 0; while (l < n && (*this)[l].val() == 0) ++l; if (l > (deg - 1) / k or l == n) return fps(deg); mint c = (*this)[l]; fps res(this->begin() + l, this->end()); res *= c.inv(); res = res.log(deg - l * k); res *= k; res = res.exp(); res *= c.pow(k); res.insert(res.begin(), l * k, 0); return res; } // calc f(x + c) // time complexity : O(n log n) fps taylor_shift(mint c) const { int n = this->size(); vm fact(n), ifact(n); fact[0] = 1; rep(i, 1, n) fact[i] = fact[i - 1] * i; ifact[n - 1] = fact[n - 1].inv(); rrep(i, n - 1) ifact[i] = ifact[i + 1] * (i + 1); fps f(n), g(n); mint nc = 1; rep(i, n) { f[i] = (*this)[n - 1 - i] * fact[n - 1 - i]; g[i] = nc * ifact[i]; nc *= c; } fps h = f * g; fps res(n); rep(i, n) res[i] = ifact[i] * h[n - 1 - i]; return res; } }; class binomial_coefficient { public: vector fact, ifact; binomial_coefficient(int n) : fact(n + 1), ifact(n + 1) { fact[0] = 1; for (int i = 1; i <= n; ++i) fact[i] = fact[i - 1] * i; ifact[n] = fact[n].inv(); for (int i = n; i >= 1; --i) ifact[i - 1] = ifact[i] * i; } mint operator()(int n, int k) { if (k == 0) return 1; if (k < 0 || k > n) return 0; return fact[n] * ifact[k] * ifact[n - k]; } } binom(400010); int main() { STR(s); vi sp(3); for (char c: s) ++sp[c - 'a']; vi v(3); scan(v); rep(i, 3) v[i] -= sp[i]; assert(MIN(v) >= 0); mint ans = 0; vm ls(v[0] + v[1] + 1, 1); rep(i, SZ(ls)) { ls[i] *= binom(i + sp[2] - 1, i); ls[i] *= binom(v[0] + v[1] + v[2] + sp[0] + sp[1] - i, v[2]); } rep(i, SZ(ls) - 1) ls[i + 1] += ls[i]; fps X(v[0] + 1, 1), Z(v[1] + 1, 1); rep(x, v[0] + 1) { X[x] *= binom(x + sp[1] - 1, x); X[x] *= binom.ifact[v[0] - x]; } rep(z, v[1] + 1) { Z[z] *= binom(z + sp[0] - 1, z); Z[z] *= binom.ifact[v[1] - z]; } fps f = X * Z; rep(i, SZ(f)) { ans += f[i] * binom.fact[v[0] + v[1] - i] * ls[v[0] + v[1] - i]; } fin(ans); }