#include<bits/stdc++.h>
using i64=long long int;
using u64=unsigned long long int;
using namespace std;

template<u64 mod> struct modint{
  u64 val;
  modint(i64 val_=0):val((val_%i64(mod)+i64(mod))%i64(mod)){}
  modint operator-(){
    return (val==0)?0:mod-val;
  }
  modint operator+(modint rhs){
    return modint(*this)+=rhs;
  }
  modint operator-(modint rhs){
    return modint(*this)-=rhs;
  }
  modint operator*(modint rhs){
    return modint(*this)*=rhs;
  }
  modint operator/(modint rhs){
    return modint(*this)/=rhs;
  }
  modint pow(i64 rhs){
    modint res=1,now=(*this);
    while(rhs){
      res*=((rhs&1)?now:1),now*=now,rhs>>=1;
    }
    return res;
  }
  modint &operator+=(modint rhs){
    val+=rhs.val,val-=((val>=mod)?mod:0);
    return (*this);
  }
  modint &operator-=(modint rhs){
    val+=((val<rhs.val)?mod:0),val-=rhs.val;
    return (*this);
  }
  modint &operator*=(modint rhs){
    val=val*rhs.val%mod;
    return (*this);
  }
  modint &operator/=(modint rhs){
    return (*this)*=rhs.pow(mod-2);
  }
  bool operator==(modint rhs){
    return val==rhs.val;
  }
  bool operator!=(modint rhs){
    return val!=rhs.val;
  }
  friend std::ostream &operator<<(std::ostream& os,modint x){
    return os<<(x.val);
  }
  friend std::istream &operator>>(std::istream& is,modint& x){
    u64 t;
    is>>t,x=t;
    return is;
  }
};

template<typename T> struct comb{
  vector<T> dat,idat;
  comb(int mx=3000000):dat(mx+1,1),idat(mx+1,1){
    for(int i=1;i<=mx;++i){
      dat[i]=dat[i-1]*i;
    }
    idat[mx]/=dat[mx];
    for(int i=mx;i>0;--i){
      idat[i-1]=idat[i]*i;
    }
  }
  T operator()(int n,int k){
    if(n==k){
      return 1;
    }
    if(n<0||k<0||n<k){
      return 0;
    }
    return dat[n]*idat[k]*idat[n-k];
  }
};

template<u64 mod> struct NTT{
  typedef modint<mod> mint;
  mint g;
  vector<int> rev;
  NTT(){
    for(g=2;;g+=1){
      if(g.pow((mod-1)>>1)!=1){
        return;
      }
    }
  }
  void dft(vector<mint>& f){
    int siz=f.size();
    for(int i=0;i<siz;++i){
      if(i<rev[i]){
        swap(f[i],f[rev[i]]);
      }
    }
    for(int b=1;b<siz;b<<=1){
      mint zeta=g.pow((mod-1)/(2*b));
      for(int i=0;i<siz;i+=2*b){
        mint now=1;
        for(int j=0;j<b;++j){
          mint s=f[i+j],t=f[i+j+b]*now;
          f[i+j]=s+t,f[i+j+b]=s-t;
          now*=zeta;
        }
      }
    }
  }
  vector<mint> operator()(vector<mint> a,vector<mint> b){
    int cnt=0,siz=1,mxsiz=a.size()+b.size()-1;
    while(siz<mxsiz){
      siz<<=1,++cnt;
    }
    rev.resize(siz);
    for(int i=0;i<siz;++i){
      rev[i]=(rev[i>>1]>>1)+(1<<(cnt-1))*(i&1);
    }
    a.resize(siz),b.resize(siz),dft(a),dft(b);
    for(int i=0;i<siz;++i){
      a[i]*=b[i];
    }
    dft(a),reverse(a.begin()+1,a.end()),a.resize(mxsiz);
    mint isiz=mint(1)/siz;
    for(int i=0;i<siz;++i){
      a[i]*=isiz;
    }
    return a;
  }
};

int main(){
  constexpr u64 mod=998244353;
  typedef modint<mod> mint;
  string S;
  int A,B,C;
  cin>>S>>A>>B>>C;
  int N=S.size();
  int P=count(S.begin(),S.end(),'a'),Q=count(S.begin(),S.end(),'b'),R=count(S.begin(),S.end(),'c');
  int T=A-P,U=B-Q,V=C-R;
  comb<mint> Cb;
  NTT<mod> ntt;
  vector<mint> tmp(T+U+1);
  for(int i=0;i<=T+U;++i){
    tmp[i]=Cb(R-1+i,R-1)*Cb(V+P+Q+(T+U-i),P+Q+(T+U-i));
    if(0<i){
      tmp[i]+=tmp[i-1];
    }
  }
  vector<mint> f(T+1),g(U+1);
  for(int i=0;i<=T;++i){
    f[i]=Cb.idat[i]*Cb(T-i+Q-1,Q-1);
  }
  for(int j=0;j<=U;++j){
    g[j]=Cb.idat[j]*Cb(U-j+P-1,P-1);
  }
  auto h=ntt(f,g);
  mint ans=0;
  for(int k=0;k<=T+U;++k){
    ans+=tmp[k]*h[k]*Cb.dat[k];
  }
  cout<<ans<<endl;
}