結果

問題 No.1179 Quadratic Equation
ユーザー fukafukatani
提出日時 2020-08-29 10:13:26
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 1 ms / 2,000 ms
コード長 1,197 bytes
コンパイル時間 12,135 ms
コンパイル使用メモリ 392,168 KB
実行使用メモリ 6,820 KB
最終ジャッジ日時 2024-11-14 05:21:18
合計ジャッジ時間 13,049 ms
ジャッジサーバーID
(参考情報)
judge5 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 11
権限があれば一括ダウンロードができます
コンパイルメッセージ
warning: unused variable: `c`
  --> src/main.rs:22:16
   |
22 |     let (a, b, c) = (a as f64, b as f64, c as f64);
   |                ^ help: if this is intentional, prefix it with an underscore: `_c`
   |
   = note: `#[warn(unused_variables)]` on by default

ソースコード

diff #
プレゼンテーションモードにする

#![allow(unused_imports)]
#![allow(non_snake_case)]
use std::cmp::*;
use std::collections::*;
use std::io::Write;
#[allow(unused_macros)]
macro_rules! debug {
($($e:expr),*) => {
#[cfg(debug_assertions)]
$({
let (e, mut err) = (stringify!($e), std::io::stderr());
writeln!(err, "{} = {:?}", e, $e).unwrap()
})*
};
}
fn main() {
let v = read_vec::<i64>();
let (a, b, c) = (v[0], v[1], v[2]);
let judge = b * b - 4 * a * c;
let (a, b, c) = (a as f64, b as f64, c as f64);
if judge < 0 {
println!("imaginary");
return;
}
if judge == 0 {
println!("{}", -b / (2.0 * a));
return;
}
let ans1 = (-b - (judge as f64).sqrt()) / (2.0 * a);
let ans2 = (-b + (judge as f64).sqrt()) / (2.0 * a);
println!("{} {}", f64::min(ans1, ans2), f64::max(ans1, ans2));
}
fn read<T: std::str::FromStr>() -> T {
let mut s = String::new();
std::io::stdin().read_line(&mut s).ok();
s.trim().parse().ok().unwrap()
}
fn read_vec<T: std::str::FromStr>() -> Vec<T> {
read::<String>()
.split_whitespace()
.map(|e| e.parse().ok().unwrap())
.collect()
}
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