#[macro_export] macro_rules! setup { { mut $input:ident: SplitWhitespace $(,)? } => { use std::io::Read; let mut buf = String::new(); std::io::stdin().read_to_string(&mut buf).unwrap(); let mut $input = buf.split_whitespace(); }; } #[macro_export] macro_rules! parse_next { ($str_iter:expr) => { $str_iter.next().unwrap().parse().unwrap() }; } fn main() { setup! { mut input: SplitWhitespace }; let a: usize = parse_next!(input); let b: usize = parse_next!(input); let ans = match (b as i64) - (a as i64) { d if d > 0 => format!("{:+}", d), d => format!("{}", d), }; println!("{}", ans); }