n, p, q = map(int, input().split())
A = list(map(int, input().split()))
A.sort()
ans = 0
def calc(base, candidate, p):
    val = 1
    for _ in range(candidate):
        val *= base
        val %= p
    return val
        
for a in range(n-3):
    for b in range(a+1, n-2):
        for c in range(b+1, n-1):
            for d in range(c+1, n):
                val = calc(10,A[a],p)+calc(9,A[b],p)+calc(7,A[c],p)+calc(5,A[d],p)
                if val%p == q:
                    # print(a, b, c, d)
                    ans += 1
print(ans)