N,P,Q = map(int, input().split())
A = list(map(int, input().split()))
A.sort()

ans = 0
for a in range(N-3):
    ai = pow(10, A[a], P)
    for b in range(a+1, N-2):
        bi = pow(9,A[b],P)
        for c in range(b+1, N-1):
            ci = pow(7,A[c],P)
            for d in range(c+1, N):
                if (ai + bi + ci + pow(5,A[d],P)) % P == Q:
                    ans += 1
print(ans)