Submission #1680379

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Source Code Expand

fn main() {
  let ls = {
    let (l1, l2, l3): (isize, isize, isize) = read_tuple();
    let mut ls = [l1, l2, l3];
    ls.sort();
    ls
  };

  let s1 = std::f64::consts::PI * (ls.iter().fold(0.0f64,|a,&x| a + x as f64)).powf(2.0);
  let s2 = std::f64::consts::PI * (std::cmp::max(0,ls[2]-(ls[0]+ls[1])) as f64).powf(2.0);
  println!("{}",  s1 - s2);
}

fn read_tuple<T1: std::str::FromStr, T2: std::str::FromStr, T3: std::str::FromStr>() -> (T1, T2, T3) {
  let mut buf = String::new();
  std::io::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();
  let z = it.next().unwrap().parse::<T3>().ok().unwrap();
  (x, y, z)
}

Submission Info

Judge Result