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

ten = []
nine = []
seven = []
five = []
for i in A:
    ten.append(pow(10,i,P))
    nine.append(pow(9,i,P))
    seven.append((pow(7,i,P)))
    five.append((pow(5,i,P)))
cnt = 0
#print(ten)
#print(nine)
#print(seven)
#print(five)
for a in range(N):
    for b in range(a+1,N):
        for c in range(b+1,N):
            for d in range(c+1,N):
                #print(a,b,c,d)
                if (ten[a]+nine[b]+seven[c]+five[d])%P == Q:
                    cnt += 1
print(cnt)