結果
| 問題 |
No.1170 Never Want to Walk
|
| コンテスト | |
| ユーザー |
cotton_fn_
|
| 提出日時 | 2020-08-14 22:25:53 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 38 ms / 2,000 ms |
| コード長 | 5,503 bytes |
| コンパイル時間 | 12,406 ms |
| コンパイル使用メモリ | 405,568 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-10-10 15:47:44 |
| 合計ジャッジ時間 | 15,100 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 37 |
ソースコード
#![allow(unused_imports, unused_macros)]
use kyoproio::*;
use std::{
collections::*,
io::{self, prelude::*},
iter,
mem::{replace, swap},
};
fn main() -> io::Result<()> {
std::thread::Builder::new()
.stack_size(64 * 1024 * 1024)
.spawn(|| {
let stdin = io::stdin();
let stdout = io::stdout();
run(KInput::new(stdin.lock()), io::BufWriter::new(stdout.lock()))
})?
.join()
.unwrap()
}
fn run<I: Input, O: Write>(mut kin: I, mut out: O) -> io::Result<()> {
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 (n, a, b): (usize, i32, i32) = kin.input();
let x: Vec<i32> = kin.seq(n);
let mut uf = UnionFind::new(n);
for i in 0..x.len() {
let mut j = lower_bound(&x, &(x[i] + b + 1)) - 1;
while j > i && x[j] - x[i] >= a {
if !uf.unite(i, j) {
break;
}
j -= 1;
}
}
for i in 0..n {
outputln!("{}", uf.size(i));
}
Ok(())
}
pub fn lower_bound<T: Ord>(a: &[T], x: &T) -> usize {
let mut l = -1;
let mut r = a.len() as isize;
while r - l > 1 {
let m = l + (r - l) / 2;
if &a[m as usize] >= x {
r = m;
} else {
l = m;
}
}
r as usize
}
pub struct UnionFind {
p: Vec<isize>,
}
impl UnionFind {
pub fn new(n: usize) -> Self {
Self { p: vec![-1; n] }
}
pub fn root(&self, mut u: usize) -> usize {
while self.p[u] >= 0 {
u = self.p[u] as usize;
}
u
}
pub fn size(&self, u: usize) -> usize {
(-self.p[self.root(u)]) as usize
}
pub fn unite(&mut self, u: usize, v: usize) -> bool {
let mut u = self.root(u);
let mut v = self.root(v);
if u == v {
return false;
}
if self.p[u] > self.p[v] {
swap(&mut u, &mut v);
}
self.p[u] += self.p[v];
self.p[v] = u as isize;
true
}
pub fn is_same(&self, u: usize, v: usize) -> bool {
self.root(u) == self.root(v)
}
}
// -----------------------------------------------------------------------------
pub mod kyoproio {
use std::io::prelude::*;
pub trait Input {
fn str(&mut self) -> &str;
fn input<T: InputParse>(&mut self) -> T {
T::input(self)
}
fn iter<T: InputParse>(&mut self) -> Iter<T, Self> {
Iter(self, 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: ?Sized>(&'a mut I, std::marker::PhantomData<*const T>);
impl<'a, T: InputParse, I: Input + ?Sized> Iterator for Iter<'a, T, I> {
type Item = T;
fn next(&mut self) -> Option<T> {
Some(self.0.input())
}
}
pub trait InputParse: Sized {
fn input<I: Input + ?Sized>(src: &mut I) -> Self;
}
impl InputParse for Vec<u8> {
fn input<I: Input + ?Sized>(src: &mut I) -> Self {
src.str().as_bytes().to_owned()
}
}
macro_rules! from_str_impl {
{ $($T:ty)* } => {
$(impl InputParse for $T {
fn input<I: Input + ?Sized>(src: &mut I) -> Self {
src.str().parse::<$T>().expect("parse error")
}
})*
}
}
from_str_impl! {
String char bool f32 f64 isize i8 i16 i32 i64 i128 usize u8 u16 u32 u64 u128
}
macro_rules! tuple_impl {
($H:ident $($T:ident)*) => {
impl<$H: InputParse, $($T: InputParse),*> InputParse for ($H, $($T),*) {
fn input<I: Input + ?Sized>(src: &mut I) -> Self {
($H::input(src), $($T::input(src)),*)
}
}
tuple_impl!($($T)*);
};
() => {}
}
tuple_impl!(A B C D E F G);
#[macro_export]
macro_rules! kdbg {
($($v:expr),*) => {
if cfg!(debug_assertions) { dbg!($($v),*) } else { ($($v),*) }
}
}
}
cotton_fn_