N, P, Q = map(int, input().split())
C = [0] * P
A = list(map(int, input().split()))
A.sort()
ans = 0
for c in range(N - 1, -1, -1):
    for b in range(c - 1, -1, -1):
        for a in range(b - 1, -1, -1):
            now = pow(10, A[a], P) + pow(9, A[b], P) + pow(7, A[c], P)
            now %= P
            ans += C[(Q-now) % P]
            
    C[pow(5, A[c], P)] += 1
    
print(ans)