n, p, q = map(int, input().split())
a = list(map(int, input().split()))
a.sort()

ii = []
jj = []
hh = []
kk = []
for i in a:
    ii.append(pow(10, i, p))
    jj.append(pow(9, i, p))
    hh.append(pow(7, i, p))
    kk.append(pow(5, i, p))
ans = 0
for i in range(n):
    for j in range(i+1, n):
        for h in range(j+1, n):
            for k in range(h+1, n):
                if (ii[i]+jj[j]+hh[h]+kk[k])%p == q:
                    ans += 1
print(ans)