from itertools import combinations
N,P,Q=list(map(int,input().split()))
A=list(map(int,input().split()))
A.sort()

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

ans=0
for l in combinations(list(range(N)),4):
    x=0
    for i in range(4):
        x+=M[l[i]][i]
        x%=P
    if x==Q:ans+=1
print(ans)