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

ans=0
for l in combinations(A,4):
    a=l[0]
    b=l[1]
    c=l[2]
    d=l[3]
    
    x=pow(10,a,P)+pow(9,b,P)+pow(7,c,P)+pow(5,d,P)
    x%=P
    if x==Q:ans+=1
print(ans)