#include #pragma GCC optimize("Ofast") using namespace std; using std::cout; using std::cin; using std::endl; using ll=long long; using ld=long double; ll I=1167167167167167167; ll Q=998244353; #define rep(i,a) for (ll i=0;i using _pq = priority_queue, greater>; template ll LB(vector &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();} template ll UB(vector &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();} template bool chmin(T &a,const T &b){if(a>b){a=b;return 1;}else return 0;} template bool chmax(T &a,const T &b){if(a void So(vector &v) {sort(v.begin(),v.end());} template void Sore(vector &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});} template void print_tate(vector &v) {rep(i,v.size()) cout<> v_mul(vector> a,vector> b){ int A=a.size(),B=a[0].size(),C=b.size(),D=b[0].size(); vector> r(A,vector(D)); for(int i=0;i> v_jyo(vector> a,int64_t N){ int m=a.size(); ll H=1; vector> r(m,vector(m,0)); for(int i=0;i0){ H*=2; if(N%H){ N-=(H/2); r=v_mul(r,a); } a=v_mul(a,a); } return r; } ll jyo(ll a,ll b){ if(b==0) return 1; if(b%2==0) return jyo((a*a)%Q,b/2); return (a*jyo(a,b-1))%Q; } //おちこんだりもしたけれど、私はげんきです。 int main() { ios::sync_with_stdio(false); cin.tie(nullptr); ll ma,na,s,mb,nb,t,k; cin>>ma>>na>>s>>mb>>nb>>t>>k; ll A=(ma*jyo(na,Q-2))%Q; ll B=(mb*jyo(nb,Q-2))%Q; int N=s+t+1; //cout<> p(N,vector(N)); p[0][0]=1; p[N-1][N-1]=1; auto q=p; rep(i,N-1){ if(i==0) continue; p[i][i]=(Q+1-A)%Q; for(int j=i+1;j0;j--){ q[j][i]=(q[j+1][i]*B)%Q; } q[0][i]=jyo(B,i); } p=v_mul(q,p); /*rep(i,N){ rep(j,N) cout<> ans(N,vector(1)); ans[t][0]=1; ans=v_mul(v_jyo(p,k),ans); cout<