// ---------- begin input macro ---------- // reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { (source = $s:expr, $($r:tt)*) => { let mut iter = $s.split_whitespace(); input_inner!{iter, $($r)*} }; ($($r:tt)*) => { let s = { use std::io::Read; let mut s = String::new(); std::io::stdin().read_to_string(&mut s).unwrap(); s }; let mut iter = s.split_whitespace(); input_inner!{iter, $($r)*} }; } macro_rules! input_inner { ($iter:expr) => {}; ($iter:expr, ) => {}; ($iter:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($iter, $t); input_inner!{$iter $($r)*} }; } macro_rules! read_value { ($iter:expr, ( $($t:tt),* )) => { ( $(read_value!($iter, $t)),* ) }; ($iter:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($iter, $t)).collect::>() }; ($iter:expr, chars) => { read_value!($iter, String).chars().collect::>() }; ($iter:expr, bytes) => { read_value!($iter, String).bytes().collect::>() }; ($iter:expr, usize1) => { read_value!($iter, usize) - 1 }; ($iter:expr, $t:ty) => { $iter.next().unwrap().parse::<$t>().expect("Parse error") }; } // ---------- end input macro ---------- use std::collections::*; fn run() { input! { m: usize, n: usize, a: [i64; m], b: [i64; n], } let mut z = vec![]; z.extend(a.iter().map(|a| (*a, 0))); z.extend(b.iter().map(|a| (*a, 1))); z.sort(); let inf = 10i64.pow(9) * 2000 + 1; for k in 1..=m { let k = k as i64; let mut left = BinaryHeap::new(); let mut add = 0; let mut ans = 0; left.push((0, inf)); if z[0].1 == 0 { add += 1; } else { add -= k; } for z in z.windows(2) { let diff = z[1].0 - z[0].0; let mut d = diff; let op = z[1].1; while d > 0 && left.peek().map_or(false, |p| p.0 + add > 0) { let (a, b) = *left.peek().unwrap(); let v = b.min(d); ans += (a + add) * v; d -= v; if b == v { left.pop(); } else { left.peek_mut().unwrap().1 -= v; } } let d = 2 * diff - d; if d > 0 { left.push((-add, d)); } if op == 0 { add += 1; } else { add -= k; } } for v in left.drain() { let pos = v.0 + add; let cnt = v.1; ans += cnt * std::cmp::max(0, pos - 0); } println!("{}", ans); } } fn main() { run(); }