#include <bits/stdc++.h> using namespace std; long long repeat2(long long a, long long b,long long mod){ long long p = a%mod,ret = 1; while(b){ if(b&1) ret = ret*p %mod; p = p*p %mod; b >>= 1; } return ret; } int main() { int N,P,Q; cin >> N >> P >> Q; vector<int> A(N); for(auto &a : A) cin >> a; sort(A.begin(),A.end()); vector<vector<int>> Rmod(N); vector<int> add(100000); for(int i=N-1; i>=0; i--) add.at(repeat2(5,A.at(i),P))++,Rmod.at(i) = add; long long answer = 0; for(int i=0; i<N-3; i++){ long long a = repeat2(10,A.at(i),P); for(int k=i+1; k<N-2; k++){ long long b = repeat2(9,A.at(k),P); for(int l=k+1; l<N-1; l++){ long long c = repeat2(7,A.at(l),P); long long goal = (Q-(a+b+c)%P+P)%P; answer += Rmod.at(l+1).at(goal); } } } cout << answer << endl; }