int main() {
short nCase;
scanf("%hd", &nCase);
for(short iCase = 1; iCase<=nCase; iCase++) {
short t0;
ac.clear();
scanf("%hd", &t0);
while(t0--) {
char _[21];
scanf("%*c%s", _);
size_t __ = strlen(_);
for(char *i = _; i!=_+__; i++)
*i = c2i(*i);
ac.insertPattern(_, _+__);
}
ac.construct();
scanf("%hd", &t0);
memset(prob, 0, sizeof(prob));
while(t0--) {
char t1;
scanf("%*c%c", &t1);
scanf("%lf", prob+c2i(t1));
}
scanf("%hd", &t0);
memset(f, 0, sizeof(f));
f[0][0] = 1;
for(int i = 0; i<t0; i++)
for(short j = 0; j<ac.size(); j++)
if(f[i][j])
for(short k = 0; k < 62; k++)
if(prob[k] && !ac.output(ac.go(j, k)).size())
f[i+1][ac.go(j, k)] += f[i][j]*prob[k];
double res = 0;
for(short j = 0; j<ac.size(); j++)
res += f[t0][j];
printf("Case #%hd: %lf\n", iCase, res);
}
return 0;
}
int main()
{
int TC, n_case(0);
scanf("%d", &TC);
while(TC--)
{
scanf("%d", &SIGMA_SIZE);
ac.init();
scanf("%s", str);
ac.insert(str);
ac.construct();
mat.r = ac.size;
mat.c = ac.size+1;
mat.reset();
memset(vis, 0, sizeof(vis));
dfs(0);
mat.gaussInt();
if(n_case)
cout << "\n";
cout << "Case " << ++n_case << ":\n";
cout << mat.arr[0][ac.size] << "\n";
}
return 0;
}