結果
| 問題 |
No.21 平均の差
|
| ユーザー |
minami
|
| 提出日時 | 2020-04-12 19:40:20 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 1 ms / 5,000 ms |
| コード長 | 2,307 bytes |
| コンパイル時間 | 13,482 ms |
| コンパイル使用メモリ | 401,052 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-09-22 06:43:47 |
| 合計ジャッジ時間 | 12,786 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 10 |
コンパイルメッセージ
warning: unused variable: `K`
--> src/main.rs:82:9
|
82 | K:usize,
| ^
|
help: `K` is captured in macro and introduced a unused variable
--> src/main.rs:38:13
|
38 | let $var = read_value!($next, $t);
| ^^^^
...
80 | / input! {
81 | | N:usize,
82 | | K:usize,
83 | | n:[usize;N]
84 | | }
| |_____- in this macro invocation
= note: `#[warn(unused_variables)]` on by default
= note: this warning originates in the macro `input_inner` which comes from the expansion of the macro `input` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: variable `N` should have a snake case name
--> src/main.rs:81:9
|
81 | N:usize,
| ^ help: convert the identifier to snake case: `n`
|
= note: `#[warn(non_snake_case)]` on by default
warning: variable `K` should have a snake case name
--> src/main.rs:82:9
|
82 | K:usize,
| ^ help: convert the identifier to snake case (notice the capitalization): `k`
ソースコード
#[allow(unused_imports)]
use std::cmp::{max, min};
#[allow(unused_imports)]
use std::collections::{HashMap, HashSet};
#[allow(unused_imports)]
use std::io::*;
#[allow(unused_imports)]
use std::str::*;
#[allow(unused_macros)]
macro_rules! input {
(source = $s:expr, $($r:tt)*) => {
let mut iter = $s.split_whitespace();
let mut next = || { iter.next().unwrap() };
input_inner!{next, $($r)*}
};
($($r:tt)*) => {
let stdin = std::io::stdin();
let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
let mut next = move || -> String{
bytes
.by_ref()
.map(|r|r.unwrap() as char)
.skip_while(|c|c.is_whitespace())
.take_while(|c|!c.is_whitespace())
.collect()
};
input_inner!{next, $($r)*}
};
}
#[allow(unused_macros)]
macro_rules! input_inner {
($next:expr) => {};
($next:expr, ) => {};
($next:expr, $var:ident : $t:tt $($r:tt)*) => {
let $var = read_value!($next, $t);
input_inner!{$next $($r)*}
};
}
#[allow(unused_macros)]
macro_rules! read_value {
($next:expr, ( $($t:tt),* )) => {
( $(read_value!($next, $t)),* )
};
($next:expr, [ $t:tt ; $len:expr ]) => {
(0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
};
($next:expr, chars) => {
read_value!($next, String).chars().collect::<Vec<char>>()
};
($next:expr, usize1) => {
read_value!($next, usize) - 1
};
($next:expr, $t:ty) => {
$next().parse::<$t>().expect("Parse error")
};
}
#[allow(dead_code)]
fn read<T: FromStr>() -> T {
let cin = stdin();
let cin = cin.lock();
let s: String = cin
.bytes() // Bytes
.map(|c| c.expect("failed reading char") as char)
.skip_while(|c| c.is_whitespace()) // c が whitespace である限り skip
.take_while(|c| !c.is_whitespace()) // c が whitespace でない限り要素を返す
.collect();
s.parse().ok().expect("failed parsing")
}
fn main() {
input! {
N:usize,
K:usize,
n:[usize;N]
}
let maxi = n.iter().max().unwrap();
let mini = n.iter().min().unwrap();
println!("{}", maxi - mini);
}
minami