import sys
input = sys.stdin.readline

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

A.sort()
ANS=0
for i in range(N):
    for j in range(i+1,N):
        for k in range(j+1,N):
            for l in range(k+1,N):
                a=A[i]
                b=A[j]
                c=A[k]
                d=A[l]

                if (pow(10,a,P)+pow(9,b,P)+pow(7,c,P)+pow(5,d,P))%P==Q:
                    ANS+=1

print(ANS)