結果
| 問題 |
No.8063 幅優先探索
|
| コンテスト | |
| ユーザー |
cotton_fn_
|
| 提出日時 | 2020-04-01 22:44:22 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,995 bytes |
| コンパイル時間 | 12,763 ms |
| コンパイル使用メモリ | 404,892 KB |
| 実行使用メモリ | 7,808 KB |
| 最終ジャッジ日時 | 2024-06-27 12:03:46 |
| 合計ジャッジ時間 | 13,713 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 5 WA * 4 |
ソースコード
#![allow(unused)]
use kyoproio::*;
use std::{
collections::*,
io::{self, prelude::*},
iter,
mem::{replace, swap},
};
fn main() -> io::Result<()> {
std::thread::Builder::new()
.stack_size(50 * 1024 * 1024)
.spawn(solve)?
.join()
.unwrap();
Ok(())
}
fn solve() {
let stdin = io::stdin();
let mut kin = KInput::new(stdin.lock());
let stdout = io::stdout();
let mut out = io::BufWriter::new(stdout.lock());
macro_rules! output {
($($args:expr),+) => { write!(&mut out, $($args),+) };
}
macro_rules! outputln {
($($args:expr),+) => { output!($($args),+); outputln!() };
() => { output!("\n"); if cfg!(debug_assertions) { out.flush(); } }
}
let (r, c): (usize, usize) = kin.input();
let s: (usize, usize) = kin.input();
let g: (usize, usize) = kin.input();
let mut b = vec![vec![b'.'; c + 2]];
for _ in 0..r {
let mut a = kin.bytes().to_owned();
a.insert(0, b'.');
a.push(b'.');
b.push(a);
}
b.push(vec![b'.'; c + 2]);
let mut que = VecDeque::new();
que.push_back(s);
let mut dist = vec![vec![!0; c + 2]; r + 2];
dist[s.0][s.1] = 0;
while let Some((y, x)) = que.pop_front() {
let (mut dx, mut dy) = (1, 0);
for _ in 0..4 {
let tx = (x as isize + dx) as usize;
let ty = (y as isize + dy) as usize;
if tx < c + 2 && ty < r + 2 && b[ty][tx] == b'.' && dist[ty][tx] == !0 {
dist[ty][tx] = dist[y][x] + 1;
que.push_back((ty, tx));
}
swap(&mut dx, &mut dy);
dx = -dx;
}
}
outputln!("{}", dist[g.0][g.1]);
}
// -----------------------------------------------------------------------------
pub mod kyoproio {
#![warn(unused)]
use std::io::prelude::*;
pub trait Input: Sized {
fn str(&mut self) -> &str;
fn bytes(&mut self) -> &[u8] {
self.str().as_ref()
}
fn input<T: InputParse>(&mut self) -> T {
self.input_fallible().expect("input error")
}
fn input_fallible<T: InputParse>(&mut self) -> Result<T> {
T::input(self)
}
fn iter<T: InputParse>(&mut self) -> Iter<T, Self> {
Iter {
input: self,
_t: std::marker::PhantomData,
}
}
fn seq<T: InputParse, B: std::iter::FromIterator<T>>(&mut self, n: usize) -> B {
self.iter().take(n).collect()
}
}
pub struct KInput<R> {
src: R,
buf: String,
pos: usize,
}
impl<R: BufRead> KInput<R> {
pub fn new(src: R) -> Self {
Self {
src,
buf: String::with_capacity(1024),
pos: 0,
}
}
}
impl<R: BufRead> Input for KInput<R> {
fn str(&mut self) -> &str {
loop {
if self.pos >= self.buf.len() {
self.pos = 0;
self.buf.clear();
if self.src.read_line(&mut self.buf).expect("io error") == 0 {
return &self.buf;
}
}
let range = self.pos
..self.buf[self.pos..]
.find(|c: char| c.is_ascii_whitespace())
.map(|i| i + self.pos)
.unwrap_or_else(|| self.buf.len());
self.pos = range.end + 1;
if range.end > range.start {
return &self.buf[range];
}
}
}
}
pub struct Iter<'a, T, I> {
input: &'a mut I,
_t: std::marker::PhantomData<T>,
}
impl<'a, T: InputParse, I: Input> Iterator for Iter<'a, T, I> {
type Item = T;
fn next(&mut self) -> Option<Self::Item> {
Some(self.input.input())
}
}
type Result<T> = std::result::Result<T, Box<dyn std::error::Error + 'static>>;
pub trait InputParse: Sized {
fn input<I: Input>(input: &mut I) -> Result<Self>;
}
macro_rules! from_str_impls {
{ $($T:ty)* } => {
$(impl InputParse for $T {
fn input<I: Input>(input: &mut I) -> Result<Self> {
input.str().parse::<$T>().map_err(|e| e.into())
}
})*
};
}
from_str_impls! {
String char bool f32 f64 isize i8 i16 i32 i64 i128 usize u8 u16 u32 u64 u128
}
macro_rules! tuple_impls {
($H:ident $($T:ident)*) => {
impl<$H: InputParse, $($T: InputParse),*> InputParse for ($H, $($T),*) {
fn input<I: Input>(input: &mut I) -> Result<Self> {
Ok(($H::input(input)?, $($T::input(input)?),*))
}
}
tuple_impls!($($T)*);
};
() => {};
}
tuple_impls!(A B C D E F G);
}
cotton_fn_