use proconio::{input, marker::Usize1}; use std::collections::*; fn main() { input! { N: usize, Q: usize, A: [usize; N], queries: [(Usize1, usize, usize); Q], } let mut by_divisor = HashMap::>::new(); for i in 0 .. N { each_divisor(A[i], |d| by_divisor.entry(d).or_default().push(i) ); } for &(l, r, k) in &queries { if let Some(indices) = by_divisor.get(&k) { let l = indices.binary_search(&l).unwrap_or_else(|l| l ); let r = indices.binary_search(&r).unwrap_or_else(|r| r ); println!("{}", r - l); } else { println!("0"); } } } fn each_divisor(n: usize, mut f: impl FnMut(usize)) { let mut d = 1; while d * d < n { if n % d == 0 { f(d); f(n / d); } d += 1; } if d * d == n { f(d); } }