Submission #1587863

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Source Code Expand

use std::io::*;
use std::str::*;

fn read_tuple<T1: FromStr, T2: FromStr>() -> (T1, T2) {
  let mut buf = String::new();
  stdin().read_line(&mut buf).ok();
  let mut it = buf.trim().split_whitespace();
  let x = it.next().unwrap().parse::<T1>().ok().unwrap();
  let y = it.next().unwrap().parse::<T2>().ok().unwrap();
  (x, y)
}

fn main() {
  let (a,b): (i32, i32) = read_tuple();
  let q = (a-b).abs() / 10;
  let r = (a-b).abs() % 10;
  let r = match r {
    0             => 0,
    1 | 5         => 1,
    2 | 4 | 6 | 9 => 2,
    3 | 7 | 8     => 3,
    _             => panic!("")
  };
  println!("{}", q + r);
}

Submission Info

Judge Result