結果
| 問題 |
No.475 最終日 - Writerの怠慢
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-10-19 13:27:14 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 12 ms / 2,000 ms |
| コード長 | 3,057 bytes |
| コンパイル時間 | 12,536 ms |
| コンパイル使用メモリ | 402,668 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-11-21 07:34:27 |
| 合計ジャッジ時間 | 14,104 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 15 |
コンパイルメッセージ
warning: unused variable: `x`
--> src/main.rs:115:20
|
115 | .map(|(r, &x)| {
| ^ help: if this is intentional, prefix it with an underscore: `_x`
|
= note: `#[warn(unused_variables)]` on by default
ソースコード
#[allow(unused_imports)]
use std::cmp::{max, min, Ordering, Reverse};
#[allow(unused_imports)]
use std::collections::{HashMap, HashSet};
mod util {
use std::io::stdin;
use std::str::FromStr;
use std::fmt::Debug;
#[allow(dead_code)]
pub fn line() -> String {
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
line.trim().to_string()
}
#[allow(dead_code)]
pub fn get<T: FromStr>() -> T
where
<T as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
line.trim().parse().unwrap()
}
#[allow(dead_code)]
pub fn gets<T: FromStr>() -> Vec<T>
where
<T as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
line.split_whitespace()
.map(|t| t.parse().unwrap())
.collect()
}
#[allow(dead_code)]
pub fn get2<T: FromStr, U: FromStr>() -> (T, U)
where
<T as FromStr>::Err: Debug,
<U as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
let mut iter = line.split_whitespace();
(
iter.next().unwrap().parse().unwrap(),
iter.next().unwrap().parse().unwrap(),
)
}
#[allow(dead_code)]
pub fn get3<S: FromStr, T: FromStr, U: FromStr>() -> (S, T, U)
where
<S as FromStr>::Err: Debug,
<T as FromStr>::Err: Debug,
<U as FromStr>::Err: Debug,
{
let mut line: String = String::new();
stdin().read_line(&mut line).unwrap();
let mut iter = line.split_whitespace();
(
iter.next().unwrap().parse().unwrap(),
iter.next().unwrap().parse().unwrap(),
iter.next().unwrap().parse().unwrap(),
)
}
}
// std::cmp::Reverse doesn't have Clone.
#[derive(Eq, PartialEq, Clone)]
struct Rev<T>(pub T);
impl<T: PartialOrd> PartialOrd for Rev<T> {
fn partial_cmp(&self, other: &Rev<T>) -> Option<Ordering> {
other.0.partial_cmp(&self.0)
}
}
impl<T: Ord> Ord for Rev<T> {
fn cmp(&self, other: &Rev<T>) -> Ordering {
other.0.cmp(&self.0)
}
}
#[allow(unused_macros)]
macro_rules! debug {
($x: expr) => {
println!("{}: {:?}", stringify!($x), $x)
}
}
fn score(s: usize, rank: usize) -> usize {
let rhs = 500 * s / (8 + 2 * rank);
50 * s + rhs
}
fn main() {
let (n, s, id): (usize, usize, usize) = util::get3();
let mut a: Vec<usize> = util::gets();
let me = a[id] + 100 * s;
a.remove(id);
a.sort();
let m = n - 1;
let mut i = 0;
let ans = a.iter()
.enumerate()
.map(|(r, &x)| {
while i < m && a[i] + score(s, r + 1) <= me {
i += 1;
}
max(0, i as i64 - (r as i64)) as f64 / (m - r) as f64
})
.fold(1.0, |a, b| a * b);
println!("{}", ans);
}