結果

問題 No.1748 Parking Lot
ユーザー togatoga
提出日時 2021-11-19 21:39:34
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 5,171 bytes
コンパイル時間 14,557 ms
コンパイル使用メモリ 400,076 KB
実行使用メモリ 6,820 KB
最終ジャッジ日時 2024-12-31 22:09:49
合計ジャッジ時間 14,215 ms
ジャッジサーバーID
(参考情報)
judge1 / judge2
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 * 2
other AC * 22
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

pub mod utils {
const DYX: [(isize, isize); 8] = [
(0, 1),
(1, 0),
(0, -1),
(-1, 0),
(1, 1),
(-1, 1),
(1, -1),
(-1, -1),
];
pub fn try_adj(y: usize, x: usize, dir: usize, h: usize, w: usize) -> Option<(usize, usize)> {
let ny = y as isize + DYX[dir].0;
let nx = x as isize + DYX[dir].1;
if ny >= 0 && nx >= 0 && ny < h as isize && nx < w as isize {
Some((ny as usize, nx as usize))
} else {
None
}
}
}
#[derive(Default)]
/// NOTE
/// declare variables to reduce the number of parameters for dp and dfs etc.
pub struct Solver {}
impl Solver {
pub fn solve(&mut self) {
let stdin = std::io::stdin();
let mut scn = fastio::Scanner::new(stdin.lock());
let n = scn.read::<i64>();
let k = scn.read::<i64>();
if n == 1 {
println!("{}", 1);
return ;
}
if k == n-1 {
println!("{}", n);
return ;
}
println!("{}", n-1);
}
}
pub mod fastio {
use std::collections::VecDeque;
use std::io::BufWriter;
use std::io::Write;
pub struct Writer<W: std::io::Write> {
writer: std::io::BufWriter<W>,
}
impl<W: std::io::Write> Writer<W> {
pub fn new(write: W) -> Writer<W> {
Writer {
writer: BufWriter::new(write),
}
}
pub fn flush(&mut self) {
self.writer.flush().unwrap();
}
pub fn write<S: std::string::ToString>(&mut self, s: S) {
self.writer.write(s.to_string().as_bytes()).unwrap();
}
pub fn writeln<S: std::string::ToString>(&mut self, s: S) {
self.write(s);
self.write('\n');
}
}
pub struct Scanner<R> {
stdin: R,
buffer: VecDeque<String>,
}
impl<R: std::io::BufRead> Scanner<R> {
pub fn new(s: R) -> Scanner<R> {
Scanner {
stdin: s,
buffer: VecDeque::new(),
}
}
pub fn read<T: std::str::FromStr>(&mut self) -> T {
while self.buffer.is_empty() {
let line = self.read_line();
for w in line.split_whitespace() {
self.buffer.push_back(String::from(w));
}
}
self.buffer.pop_front().unwrap().parse::<T>().ok().unwrap()
}
pub fn read_line(&mut self) -> String {
let mut line = String::new();
let _ = self.stdin.read_line(&mut line);
line.trim_end().to_string()
}
pub fn vec<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T> {
(0..n).map(|_| self.read()).collect()
}
pub fn chars(&mut self) -> Vec<char> {
self.read::<String>().chars().collect()
}
}
}
pub mod macros {
#[macro_export]
#[allow(unused_macros)]
macro_rules ! max {($ x : expr ) => ($ x ) ; ($ x : expr , $ ($ y : expr ) ,+ ) => {std :: cmp :: max ($ x , max ! ($ ($ y ) ,+ ) ) } }
#[macro_export]
#[allow(unused_macros)]
macro_rules ! min {($ x : expr ) => ($ x ) ; ($ x : expr , $ ($ y : expr ) ,+ ) => {std :: cmp :: min ($ x , min ! ($ ($ y ) ,+ ) ) } }
#[macro_export]
#[allow(unused_macros)]
/// Display a line of variables
macro_rules ! echo {() => {{use std :: io :: {self , Write } ; writeln ! (io :: stderr () , "{}:" , line ! () ) . unwrap () ; } } ; ($ e : expr ,
        $ ($ es : expr ) ,+ $ (, ) ? ) => {{use std :: io :: {self , Write } ; write ! (io :: stderr () , "{}:" , line ! () ) . unwrap () ; write !
        (io :: stderr () , " {} = {:?}" , stringify ! ($ e ) , $ e ) . unwrap () ; $ (write ! (io :: stderr () , " {} = {:?}" , stringify ! ($ es ) ,
        $ es ) . unwrap () ; ) + writeln ! (io :: stderr () ) . unwrap () ; } } ; ($ e : expr ) => {{use std :: io :: {self , Write } ; let result =
        $ e ; writeln ! (io :: stderr () , "{}: {} = {:?}" , line ! () , stringify ! ($ e ) , result ) . unwrap () ; result } } ; }
#[macro_export]
#[allow(unused_macros)]
/// Display a line of variables with colors
macro_rules ! cecho {() => {{use std :: io :: {self , Write } ; writeln ! (io :: stderr () , "\x1b[31;1m{}\x1b[m:" , line ! () ) . unwrap () ; }
        } ; ($ e : expr , $ ($ es : expr ) ,+ $ (, ) ? ) => {{use std :: io :: {self , Write } ; write ! (io :: stderr () , "\x1b[31;1m{}\x1b[m:" ,
        line ! () ) . unwrap () ; write ! (io :: stderr () , " \x1b[92;1m{}\x1b[m = {:?}" , stringify ! ($ e ) , $ e ) . unwrap () ; $ (write ! (io
        :: stderr () , " \x1b[92;1m{}\x1b[m = {:?}" , stringify ! ($ es ) , $ es ) . unwrap () ; ) + writeln ! (io :: stderr () ) . unwrap () ; } } ;
        ($ e : expr ) => {{use std :: io :: {self , Write } ; let result = $ e ; writeln ! (io :: stderr () , "\x1b[31;1m{}\x1b[m: \x1b[92;1m{}\x1b[m
        = {:?}" , line ! () , stringify ! ($ e ) , result ) . unwrap () ; result } } ; }
}
fn main() {
std::thread::Builder::new()
.stack_size(64 * 1024 * 1024)
.spawn(|| Solver::default().solve())
.unwrap()
.join()
.unwrap();
}
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