n, p, q = map(int, input().split())
a = sorted(list(map(int, input().split())))
cnt = [0] * p
for i in range(n):
  for j in range(i+1, n):
    cnt[(pow(7, a[i], p)+pow(5, a[j], p))%p] += 1
ans = 0
for i in range(n):
  for j in range(i+1, n):
    cnt[(pow(7, a[i], p)+pow(5, a[j], p))%p] -= 1
  for j in range(0, i):
    ans += cnt[(q-pow(10, a[j], p)-pow(9, a[i], p))%p]
print(ans)