R=range
I=lambda:map(int,input().split())
T,m=I()
M=[m]
P=set()
def G(a,b):
	while a:a,b=b%a,a
	return b
def r(n):
	for j in R(len(M)):
		while M[j]%n<1:M[j]//=n
	P.add(n)
while M:
	n=M.pop()
	if n<99:
		i=2
		while i*i<=n:
			if n%i<1 and not i in P:r(i)
			while n%i<1:n//=i
			i+=1
		if n>1:r(n)
	else:
		x,d,c=2,1,int(n**0.25)
		y=(x*x+1)%n
		while d<2 and c:x,y,d,c=(x*x+1)%n,(y**4+2*y*y+2)%n,G(abs(x-y),n),c-1
		if d<n and c:M+=[n//d,d]
		else:r(n)
P=list(P)
L=len(P)
Q=998244353
U=1<<L
for t in R(T):
	N,B,C,D=I()
	c=[1]*U
	for a in I():
		b=0
		for i in R(L):b|=(m//a%P[i]<1)<<i
		c[b],B=c[b]*(1+B*(m%a<1))%Q,(C*B+D)%Q
	for i in R(L):
		for d in R(U):
			if d>>i&1<1:c[d]=c[d]*c[d|1<<i]%Q
	v=0
	for d in R(U):v+=c[d]*[1,-1][len([1for i in R(L)if d>>i&1])%2]
	print((v-(m<2))%Q)