#[allow(unused_imports)] use std::cmp::*; #[allow(unused_imports)] use std::collections::*; use std::io::{Write, BufWriter}; // https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { ($($r:tt)*) => { let stdin = std::io::stdin(); let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock())); let mut next = move || -> String{ bytes .by_ref() .map(|r|r.unwrap() as char) .skip_while(|c|c.is_whitespace()) .take_while(|c|!c.is_whitespace()) .collect() }; input_inner!{next, $($r)*} }; } macro_rules! input_inner { ($next:expr) => {}; ($next:expr, ) => {}; ($next:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($next, $t); input_inner!{$next $($r)*} }; } macro_rules! read_value { ($next:expr, ( $($t:tt),* )) => { ( $(read_value!($next, $t)),* ) }; ($next:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($next, $t)).collect::>() }; ($next:expr, chars) => { read_value!($next, String).chars().collect::>() }; ($next:expr, usize1) => { read_value!($next, usize) - 1 }; ($next:expr, [ $t:tt ]) => {{ let len = read_value!($next, usize); (0..len).map(|_| read_value!($next, $t)).collect::>() }}; ($next:expr, $t:ty) => { $next().parse::<$t>().expect("Parse error") }; } #[allow(unused)] macro_rules! debug { ($($format:tt)*) => (write!(std::io::stderr(), $($format)*).unwrap()); } #[allow(unused)] macro_rules! debugln { ($($format:tt)*) => (writeln!(std::io::stderr(), $($format)*).unwrap()); } fn gcd(mut x: i64, mut y: i64) -> i64 { while y != 0 { let r = x % y; x = y; y = r; } x } fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts { ($($format:tt)*) => (let _ = write!(out,$($format)*);); } input! { n: usize, m: usize, k: i64, op: chars, b: [i64; m], a: [i64; n], } let mul = op == vec!['*']; if mul { let mut ha = HashMap::new(); let mut hb = HashMap::new(); for &a in &a { let g = gcd(a, k); *ha.entry(g).or_insert(0) += 1; } for &b in &b { let g = gcd(b, k); *hb.entry(g).or_insert(0) += 1; } let ha: Vec<_> = ha.into_iter().collect(); let hb: Vec<_> = hb.into_iter().collect(); let mut cnt: i64 = 0; for (d, ca) in ha { for &(e, cb) in &hb { if d * e % k == 0 { cnt += ca * cb; } } } puts!("{}\n", cnt); return; } let mut ha = HashMap::new(); let mut hb = HashMap::new(); for &a in &a { let g = a % k; *ha.entry(g).or_insert(0) += 1; } for &b in &b { let g = (k - b % k) % k; *hb.entry(g).or_insert(0) += 1; } let mut cnt: i64 = 0; for (d, ca) in ha { if let Some(&cb) = hb.get(&d) { cnt += ca * cb; } } puts!("{}\n", cnt); } fn main() { // In order to avoid potential stack overflow, spawn a new thread. let stack_size = 104_857_600; // 100 MB let thd = std::thread::Builder::new().stack_size(stack_size); thd.spawn(|| solve()).unwrap().join().unwrap(); }