結果

問題 No.2002 Range Swap Query
ユーザー koba-e964
提出日時 2022-07-08 22:36:52
言語 Rust
(1.83.0 + proconio)
結果
AC  
実行時間 340 ms / 2,000 ms
コード長 3,161 bytes
コンパイル時間 16,229 ms
コンパイル使用メモリ 379,452 KB
実行使用メモリ 50,176 KB
最終ジャッジ日時 2024-12-28 07:12:47
合計ジャッジ時間 20,632 ms
ジャッジサーバーID
（参考情報） 		judge3 / 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 * 20
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

#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;
use std::io::{Write, BufWriter};
// https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
    ($($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)*}
    };
}
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)*}
    };
}
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, [ $t:tt ]) => {{
        let len = read_value!($next, usize);
        read_value!($next, [$t; len])
    }};
    ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error"));
}
trait Change { fn chmax(&mut self, x: Self); fn chmin(&mut self, x: Self); }
impl<T: PartialOrd> Change for T {
    fn chmax(&mut self, x: T) { if *self < x { *self = x; } }
    fn chmin(&mut self, x: T) { if *self > x { *self = x; } }
}
fn main() {
    // In order to avoid potential stack overflow, spawn a new thread.
    let stack_size = 104_857_600; // 100 MB
    let thd = std::thread::Builder::new().stack_size(stack_size);
    thd.spawn(|| solve()).unwrap().join().unwrap();
}
fn solve() {
    let out = std::io::stdout();
    let mut out = BufWriter::new(out.lock());
    macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););}
    #[allow(unused)]
    macro_rules! putvec {
        ($v:expr) => {
            for i in 0..$v.len() {
                puts!("{}{}", $v[i], if i + 1 == $v.len() {"\n"} else {" "});
            }
        }
    }
    input! {
        n: usize, k: usize, q: usize,
        ab: [(usize1, usize1); k],
        lrx: [(usize1, usize, usize1); q],
    }
    let mut que = vec![vec![]; k + 1];
    for i in 0..q {
        let (l, r, x) = lrx[i];
        que[r].push((l, x, i));
    }
    let mut p: Vec<usize> = (0..n).collect();
    let mut invp: Vec<usize> = (0..n).collect();
    let mut que2 = vec![vec![]; k + 1];
    for i in 0..k {
        let (a, b) = ab[i];
        p.swap(a, b);
        for &(l, x, idx) in &que[i + 1] {
            que2[l].push((p[x], idx));
        }
    }
    p = (0..n).collect();
    let mut ans = vec![0; q];
    for i in 0..k {
        for &(x, idx) in &que2[i] {
            ans[idx] = invp[x];
        }
        let (a, b) = ab[i];
        p.swap(a, b);
        invp.swap(p[a], p[b]);
    }
    for v in ans {
        puts!("{}\n", v + 1);
    }
}
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