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 {
        for i in 0..m {
            let mut j = 1;
            while j * j <= b[i] {
                if b[i] % j == 0 {
                    let p = memo.entry(j).or_insert(0);
                    *p += 1;
                    if b[i] / j != j {
                        let p = memo.entry(b[i] / j).or_insert(0);
                        *p += 1;
                    }
                }
                j += 1;
            }
        }

        for i in 0..n {
            let d = gcd(a[i], k);
            let p = memo.entry(k / d).or_insert(0);
            ans += *p;
        }
    }
    println!("{}", ans);
}