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

MOD = [[0]*4 for _ in range(N)]
for i in range(N):
    MOD[i][0] = pow(10, A[i], P)
    MOD[i][1] = pow(9, A[i], P)
    MOD[i][2] = pow(7, A[i], P)
    MOD[i][3] = pow(5, A[i], P)

ans = 0
for i in range(N-3):
    for j in range(i+1, N-2):
        for k in range(j+1, N-1):
            for l in range(k+1, N):
                if (MOD[i][0]+MOD[j][1]+MOD[k][2]+MOD[l][3]) % P == Q:
                    ans += 1

print(ans)