use std::collections::*; use std::io::Read; fn get_word() -> String { let stdin = std::io::stdin(); let mut stdin=stdin.lock(); let mut u8b: [u8; 1] = [0]; loop { let mut buf: Vec = Vec::with_capacity(16); loop { let res = stdin.read(&mut u8b); if res.unwrap_or(0) == 0 || u8b[0] <= b' ' { break; } else { buf.push(u8b[0]); } } if buf.len() >= 1 { let ret = String::from_utf8(buf).unwrap(); return ret; } } } #[allow(dead_code)] fn get() -> T { get_word().parse().ok().unwrap() } fn main() { let n: i64 = get(); let m: i64 = get(); let mut two = HashMap::new(); for a in 0..m + 1 { for b in 0..m + 1 { *two.entry((a + b, a * a + b * b)).or_insert(0i64) += 1; } } let mut tot = 0; for (&(sum, sqsum), &v) in &two { for cd in 0..2 * m + 1 { let rem = 2 * n - (sum + cd) * (sum + cd) - sqsum; tot += *two.get(&(cd, rem)).unwrap_or(&0) * v; } } println!("{}", tot); }