結果
問題 | No.815 Are you a traveller ? |
ユーザー | tayu0110 |
提出日時 | 2022-10-27 00:49:07 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 1 ms / 2,000 ms |
コード長 | 4,446 bytes |
コンパイル時間 | 13,117 ms |
コンパイル使用メモリ | 379,620 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-04 12:34:03 |
合計ジャッジ時間 | 13,934 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 1 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
ソースコード
fn main() { scan!(n: usize); println!("{}", (n+1)/2); } mod iolib { use std::cell::RefCell; use std::io::{ Read, BufRead, Error }; use std::str::SplitWhitespace; use std::thread_local; thread_local! { static BUF_SPLIT_WHITESPACE: RefCell<SplitWhitespace<'static>> = RefCell::new("".split_whitespace()); } #[inline] fn refill_buffer(interactive: bool) -> Result<(), Error> { let mut s = String::new(); if cfg!(debug_assertions) || interactive { std::io::stdin().lock().read_line(&mut s)?; } else { std::io::stdin().lock().read_to_string(&mut s)?; } BUF_SPLIT_WHITESPACE.with(|buf_str| { *buf_str.borrow_mut() = Box::leak(s.into_boxed_str()).split_whitespace(); Ok(()) }) } #[inline] pub fn scan_string(interactive: bool) -> &'static str { BUF_SPLIT_WHITESPACE.with(|buf_str| { if let Some(s) = buf_str.borrow_mut().next() { return s; } refill_buffer(interactive).unwrap(); if let Some(s) = buf_str.borrow_mut().next() { return s; } unreachable!("Read Error: No input items."); }) } #[macro_export] macro_rules! scan { // Terminator ( @interactive : $interactive:literal ) => {}; // Terminator ( @interactive : $interactive:literal, ) => {}; // Vec<Vec<....>> ( @interactive : $interactive:literal, $v: ident : [ [ $( $inner:tt )+ ] ; $len:expr ]) => { let $v = { let len = $len; (0..len).fold(vec![], |mut v, _| { $crate::scan!(@interactive: $interactive, w: [ $( $inner )+ ]); v.push(w); v }) }; }; // Vec<Vec<....>>, ...... ( @interactive : $interactive:literal, $v: ident : [ [ $( $inner:tt )+ ] ; $len:expr ] , $( $rest:tt )* ) => { $crate::scan!(@interactive: $interactive, [ [ $( $inner )+ ] ; $len ]); $crate::scan!(@interactive: $interactive, $( $rest )*); }; // Vec<$t> ( @interactive : $interactive:literal, $v:ident : [ $t:tt ; $len:expr ]) => { let $v = { let len = $len; (0..len).map(|_| { $crate::scan!(@interactive: $interactive, $v : $t); $v }).collect::<Vec<_>>() }; }; // Vec<$t>, ..... ( @interactive : $interactive:literal, $v:ident : [ $t:tt ; $len:expr ] , $( $rest:tt )* ) => { let $v = { let len = $len; (0..len).map(|_| { $crate::scan!(@interactive: $interactive, $v : $t); $v }).collect::<Vec<_>>() }; $crate::scan!(@interactive: $interactive, $( $rest )*); }; // Expand tuple ( @interactive : $interactive:literal, @expandtuple, ( $t:tt )) => { { let tmp = $crate::iolib::scan_string($interactive).parse::<$t>().unwrap(); tmp } }; // Expand tuple ( @interactive : $interactive:literal, @expandtuple, ( $t:tt $( , $rest:tt )* ) ) => { ( $crate::scan!(@interactive: $interactive, @expandtuple, ( $t )), $( $crate::scan!(@interactive: $interactive, @expandtuple, ( $rest )), )* ) }; // let $v: ($t, $u, ....) = (.......) ( @interactive : $interactive:literal, $v:ident : ( $( $rest:tt )* ) ) => { let $v = $crate::scan!(@interactive: $interactive, @expandtuple, ( $( $rest )* )); }; // let $v: $t = ...... ( @interactive : $interactive:literal, $v:ident : $t:ty ) => { let $v = $crate::iolib::scan_string($interactive).parse::<$t>().unwrap(); }; // let $v: $t = ......, ....... ( @interactive : $interactive:literal, $v:ident : $t:ty, $( $rest:tt )+ ) => { $crate::scan!(@interactive: $interactive, $v : $t); $crate::scan!(@interactive: $interactive, $( $rest )+); }; // ...... ( $( $rest:tt )* ) => { $crate::scan!(@interactive: false, $( $rest )*); }; } #[macro_export] macro_rules! scani { ( $( $rest:tt )* ) => { $crate::scan!(@interactive: true, $( $rest )*); }; } }