from math import gcd
N,M,K=map(int,input().split())
op,*B=input().split()
B=map(int,B)
A=[int(input())for _ in range(N)]
z=0
if op=='+':
	d={}
	for b in B:
		b%=K
		if b in d:
			d[b]+=1
		else:
			d[b]=1
	for a in A:
		a=-a%K
		if a in d:
			z+=d[a]
else:
	da={}
	db={}
	for b in B:
		g=gcd(b,K)
		if g in db:
			db[g]+=1
		else:
			db[g]=1
	for a in A:
		g=gcd(a,K)
		if g in da:
			da[g]+=1
		else:
			da[g]=1
	for ka,va in da.items():
		for kb,vb in db.items():
			if ka*kb%K==0:
				z+=va*vb
print(z)