from collections import defaultdict
import copy
N, P, Q=map(int, input().split())
A=list(map(int, input().split()))
stset=[None for i in range(N)]
for i in range(len(A)-1, -1, -1):
  if i==len(A)-1:
    obj=defaultdict(int)
    obj[pow(5, A[i], P)]+=1
    stset[i]=obj
    continue
  obj=copy.deepcopy(stset[i+1])
  obj[pow(5, A[i], P)]+=1
  stset[i]=obj
ans=0
for a in range(N-4+1):
  for b in range(a+1, N-3+1):
    for c in range(b+1, N-2+1):
      v=pow(10, A[a], P)+pow(9, A[b], P)+pow(7, A[c], P)
      target=(Q-v)%P
      ans+=stset[c+1][target]
print(ans)