from itertools import combinations
N,P,Q = map(int,input().split())
A = sorted(list(map(int,input().split())))
P10 = [pow(10,A[i],P) for i in range(N)]
P9 = [pow(9,A[i],P) for i in range(N)]
P7 = [pow(7,A[i],P) for i in range(N)]
P5 = [pow(5,A[i],P) for i in range(N)]
ans = 0
for x in combinations(range(N),4):
    i,j,k,l = x
    if (P10[i]+P9[j]+P7[k]+P5[l])%P==Q:
        ans += 1
print(ans)