#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- const ll mo=998244353; ll modpow(ll a, ll n = mo-2) { ll r=1;a%=mo; while(n) r=r*((n%2)?a:1)%mo,a=a*a%mo,n>>=1; return r; } ll MA,MB,NA,NB; int S,T,K; const int MAT=101; struct Mat { ll v[MAT][MAT]; Mat(){ZERO(v);};}; Mat mulmat(Mat& a,Mat& b,int n=MAT) { ll mo2=4*mo*mo; int x,y,z; Mat r; FOR(x,n) FOR(y,n) r.v[x][y]=0; FOR(x,n) FOR(z,n) FOR(y,n) { r.v[x][y] += a.v[x][z]*b.v[z][y]; if(r.v[x][y]>mo2) r.v[x][y] -= mo2; } FOR(x,n) FOR(y,n) r.v[x][y]%=mo; return r; } Mat powmat(ll p,Mat a,int n=MAT) { int i,x,y; Mat r; FOR(x,n) FOR(y,n) r.v[x][y]=0; FOR(i,n) r.v[i][i]=1; while(p) { if(p%2) r=mulmat(r,a,n); a=mulmat(a,a,n); p>>=1; } return r; } void solve() { int i,j,k,l,r,x,y; string s; cin>>MA>>NA>>S; cin>>MB>>NB>>T; MA=MA*modpow(NA)%mo; MB=MB*modpow(NB)%mo; cin>>K; Mat A,B; A.v[50+S][50+S]=B.v[50+S][50+S]=1; A.v[50-T][50-T]=B.v[50-T][50-T]=1; for(x=50-T+1;x<50+S;x++) { ll pat=1; for(y=x;y<50+S;y++) { A.v[y][x]=pat*(1+mo-MA)%mo; pat=pat*MA%mo; } A.v[50+S][x]=pat; pat=1; for(y=x;y>50-T;y--) { B.v[y][x]=pat*(1+mo-MB)%mo; pat=pat*MB%mo; } B.v[50-T][x]=pat; } Mat C=mulmat(B,A); C=powmat(K,C); cout<