use std::io::*;

fn gcd(a: usize, b: usize) -> usize {
    if b == 0 {
        return a;
    }
    gcd(b, a % b)
}

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let n: usize = itr.next().unwrap().parse().unwrap();
    let m: usize = itr.next().unwrap().parse().unwrap();
    let k: usize = itr.next().unwrap().parse().unwrap();
    let op: char = itr.next().unwrap().parse().unwrap();
    let b: Vec<usize> = (0..m)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();
    let a: Vec<usize> = (0..n)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();

    let mut memo = std::collections::HashMap::new();
    let mut ans = 0;
    if op == '+' {
        for i in 0..m {
            let p = memo.entry(b[i] % k).or_insert(0);
            *p += 1;
        }
        for i in 0..n {
            let p = memo.entry(k - a[i] % k).or_insert(0);
            ans += *p;
        }
    } else {
        let mut mome = std::collections::HashMap::new();
        for i in 0..m {
            let d = gcd(k, b[i]);
            let p = mome.entry(d).or_insert(0);
            *p += 1;
        }
        for i in 0..n {
            let d = gcd(k, a[i]);
            let p = memo.entry(d).or_insert(0);
            *p += 1;
        }
        for (k1, v1) in memo.iter() {
            for (k2, v2) in mome.iter() {
                if k1 * k2 % k == 0 {
                    ans += v1 * v2;
                }
            }
        }
    }
    println!("{}", ans);
}