import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

public class Main {
    static int p;
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] base = new int[]{10, 9, 7, 5};
        p = sc.nextInt();
        int q = sc.nextInt();
        int[] tmp = new int[n];
        for (int i = 0; i < n; i++) {
            tmp[i] = sc.nextInt();
        }
        Arrays.sort(tmp);
        int[][] values = new int[n][4];
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < 4; j++) {
                values[i][j] = pow(base[j], tmp[i]);
            }
        }
        int ans = 0;
        for (int i = 0; i < n; i++) {
            int current1 = values[i][0];
            for (int j = i + 1; j < n; j++) {
                int current2 = (current1 + values[j][1]) % p;
                for (int k = j + 1; k < n; k++) {
                    int current3 = (current2 + values[k][2]) % p;
                    for (int l = k + 1; l < n; l++) {
                        int current4 = (current3 + values[l][3]) % p;
                        if (current4 == q) {
                            ans++;
                        }
                    }
                }
            }
        }
        System.out.println(ans);
    }

    static int pow(int x, int pp) {
        if (pp == 0) {
            return 1;
        } else if (pp % 2 == 0) {
            return pow((int)((long)x * x % p), pp / 2);
        } else {
            return (int)((long)pow(x, pp - 1) * x % p);
        }
    }
}
class Scanner {
    BufferedReader br;
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
            
        }
    }
    
    public int nextInt() {
        return Integer.parseInt(next());
    }
    
    public long nextLong() {
        return Long.parseLong(next());
    }
    
    public double nextDouble() {
        return Double.parseDouble(next());
    }
    
    public String next() {
        try {
            while (!st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            return st.nextToken();
        }
    }
    
}