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); }