#![allow(non_snake_case, unused_imports, unused_must_use)]
use std::io::{self, prelude::*};
use std::str;

fn main() {
    let (stdin, stdout) = (io::stdin(), io::stdout());
    let mut scan = Scanner::new(stdin.lock());
    let mut out = io::BufWriter::new(stdout.lock());

    macro_rules! input {
        ($T: ty) => {
            scan.token::<$T>()
        };
        ($T: ty, $N: expr) => {
            (0..$N).map(|_| scan.token::<$T>()).collect::<Vec<_>>()
        };
    }

    let N = input!(usize);
    let P = input!(usize);
    let Q = input!(usize);

    let mut A = input!(usize, N);
    A.sort();

    let mut cnt = 0;

    let P10 = A.iter().map(|&a| pow(10, a, P)).collect::<Vec<_>>();
    let P9 = A.iter().map(|&a| pow(9, a, P)).collect::<Vec<_>>();
    let P7 = A.iter().map(|&a| pow(7, a, P)).collect::<Vec<_>>();
    let P5 = A.iter().map(|&a| pow(5, a, P)).collect::<Vec<_>>();

    for i in 0..N {
        for j in i + 1..N {
            for k in j + 1..N {
                for l in k + 1..N {
                    if (P10[i] + P9[j] + P7[k] + P5[l]) % P == Q {
                        cnt += 1;
                    }
                }
            }
        }
    }

    writeln!(out, "{}", cnt);
}

pub fn pow(a: usize, b: usize, m: usize) -> usize {
    let mut ret = 1;
    let mut p = a;

    for i in 0..61 {
        if (b >> i) & 1 == 1 {
            ret *= p;
            ret %= m;
        }

        p *= p;
        p %= m;
    }

    return ret;
}

struct Scanner<R> {
    reader: R,
    buf_str: Vec<u8>,
    buf_iter: str::SplitWhitespace<'static>,
}
impl<R: BufRead> Scanner<R> {
    fn new(reader: R) -> Self {
        Self {
            reader,
            buf_str: vec![],
            buf_iter: "".split_whitespace(),
        }
    }
    fn token<T: str::FromStr>(&mut self) -> T {
        loop {
            if let Some(token) = self.buf_iter.next() {
                return token.parse().ok().expect("Failed parse");
            }
            self.buf_str.clear();
            self.reader
                .read_until(b'\n', &mut self.buf_str)
                .expect("Failed read");
            self.buf_iter = unsafe {
                let slice = str::from_utf8_unchecked(&self.buf_str);
                std::mem::transmute(slice.split_whitespace())
            }
        }
    }
}