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

la = []
lb = []
lc = []
ld = []

for num in A:
    la.append(calc(10, num, p))
    lb.append(calc(9, num, p))
    lc.append(calc(7, num, p))
    ld.append(calc(5, num, p))
        
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 = la[a] + lb[b] + lc[c] + ld[d]
                if val%p == q:
                    # print(a, b, c, d)
                    ans += 1
print(ans)