n,p,q=map(int,input().split())
a=list(map(int,input().split()))
a.sort()
mx=2000008
p10=[0]*mx
p09=[0]*mx
p07=[0]*mx
p05=[0]*mx
p10[0]=1
p09[0]=1
p07[0]=1
p05[0]=1
for i in range(1,mx):
	p10[i]=p10[i-1]*10%p
	p09[i]=p09[i-1]* 9%p
	p07[i]=p07[i-1]* 7%p
	p05[i]=p05[i-1]* 5%p

from collections import defaultdict
d=defaultdict(int)
ans=0
for i in range(n):
	for j in range(i+1,n):
		for k in range(j+1,n):
			g=(p09[a[i]]+p07[a[j]]+p05[a[k]])%p
			#g+?=q
			#g+?=p+q
			ans+=d[p+q-g]+d[q-g]
	d[p10[a[i]]]+=1
print(ans)