n,p,q=map(int,input().split())
a=list(map(int,input().split()))
a.sort()
r=[[0]*p for i in range(n)]
for i in range(n):
  for j in range(i+1):
    r[j][pow(5,a[i],p)]+=1
g=0
for i in range(n-3):
  for j in range(i+1,n-2):
    for k in range(j+1,n-1):
      g+=r[k+1][(q-pow(10,a[i],p)-pow(9,a[j],p)-pow(7,a[i],p))%p]
print(g)