#566944 (Rust) No.1209 XOR Into You

• 問題: No.1209 XOR Into You
• ユーザー: cotton_fn_
• 提出日時: 2020-10-15 23:35:42
• 言語: Rust (1.77.0)
• 結果: AC
• 実行時間: 59 ms / 2,000 ms
• コード長: 5,558 bytes
• コンパイル時間: 6,466 ms
• コンパイル使用メモリ: 162,904 KB
• 実行使用メモリ: 8,376 KB
• 最終ジャッジ日時: 2023-09-28 01:30:52
• 合計ジャッジ時間: 12,381 ms
• ジャッジサーバーID （参考情報）: judge14 / judge12

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 4,352 KB
testcase_01	AC	2 ms; 4,360 KB
testcase_02	AC	1 ms; 4,356 KB
testcase_03	AC	1 ms; 4,352 KB
testcase_04	AC	13 ms; 4,356 KB
testcase_05	AC	13 ms; 4,356 KB
testcase_06	AC	43 ms; 6,740 KB
testcase_07	AC	51 ms; 7,120 KB
testcase_08	AC	45 ms; 6,444 KB
testcase_09	AC	45 ms; 6,476 KB
testcase_10	AC	36 ms; 5,584 KB
testcase_11	AC	44 ms; 6,492 KB
testcase_12	AC	41 ms; 5,900 KB
testcase_13	AC	46 ms; 6,684 KB
testcase_14	AC	39 ms; 5,872 KB
testcase_15	AC	40 ms; 6,272 KB
testcase_16	AC	40 ms; 5,920 KB
testcase_17	AC	39 ms; 5,752 KB
testcase_18	AC	56 ms; 7,980 KB
testcase_19	AC	41 ms; 5,916 KB
testcase_20	AC	46 ms; 6,648 KB
testcase_21	AC	36 ms; 5,464 KB
testcase_22	AC	18 ms; 8,280 KB
testcase_23	AC	18 ms; 8,256 KB
testcase_24	AC	18 ms; 8,196 KB
testcase_25	AC	59 ms; 8,200 KB
testcase_26	AC	58 ms; 8,200 KB
testcase_27	AC	58 ms; 8,192 KB
testcase_28	AC	59 ms; 8,276 KB
testcase_29	AC	58 ms; 8,208 KB
testcase_30	AC	59 ms; 8,212 KB
testcase_31	AC	52 ms; 8,248 KB
testcase_32	AC	52 ms; 8,288 KB
testcase_33	AC	52 ms; 8,196 KB
testcase_34	AC	53 ms; 8,376 KB
testcase_35	AC	52 ms; 8,192 KB
testcase_36	AC	52 ms; 8,196 KB
testcase_37	AC	18 ms; 8,260 KB
testcase_38	AC	49 ms; 7,104 KB
testcase_39	AC	42 ms; 6,368 KB
testcase_40	AC	19 ms; 8,288 KB

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(|| {
            run(
                KInput::new(io::stdin().lock()),
                io::BufWriter::new(io::stdout().lock()),
            )
        })?
        .join()
        .unwrap();
    Ok(())
}

fn run<I: Input, O: Write>(mut kin: I, mut out: O) {
    macro_rules! output { ($($args:expr),+) => { write!(&mut out, $($args),+).unwrap(); }; }
    macro_rules! outputln {
        ($($args:expr),+) => { output!($($args),+); outputln!(); };
        () => { output!("\n"); if cfg!(debug_assertions) { out.flush().unwrap(); } }
    }

    let n: usize = kin.input();
    let a: Vec<i32> = kin.seq(n);
    let b: Vec<i32> = kin.seq(n);
    if a.first() != b.first() || a.last() != b.last() {
        outputln!("-1");
        return;
    }

    let mut xa = vec![(0, 0); n - 1];
    let mut xb = vec![(0, 0); n - 1];
    for i in 0..n - 1 {
        xa[i] = (a[i] ^ a[i + 1], i);
        xb[i] = (b[i] ^ b[i + 1], i);
    }

    xa.sort();
    xb.sort();
    
    let mut ij = vec![(0, 0); n - 1];
    for i in 0..n - 1 {
        let (av, ai) = xa[i];
        let (bv, bi) = xb[i];
        if av != bv {
            outputln!("-1");
            return;
        }
        ij[i] = (ai, bi);
    }
    ij.sort();

    let mut fen = FenwickTree::new(n - 1, || 0, |a, b| a + b);
    let mut ans = 0;
    for (i, j) in ij {
        ans += i - fen.fold(j);
        fen.apply(j, 1);
    }
    outputln!("{}", ans);
}

pub struct FenwickTree<T, F, Z> {
    a: Vec<T>,
    f: F,
    z: Z,
}
impl<T, F: Fn(&T, &T) -> T, Z: Fn() -> T> FenwickTree<T, F, Z> {
    pub fn new(n: usize, z: Z, f: F) -> Self {
        Self {
            a: std::iter::repeat_with(&z).take(n + 1).collect(),
            f,
            z,
        }
    }
    pub fn apply(&mut self, mut i: usize, x: T) {
        i += 1;
        while i < self.a.len() {
            self.a[i] = (self.f)(&self.a[i], &x);
            i += i & (!i + 1);
        }
    }
    // [0, i)
    pub fn fold(&self, mut i: usize) -> T {
        let mut s = (self.z)();
        while i > 0 {
            s = (self.f)(&self.a[i], &s);
            i -= i & (!i + 1);
        }
        s
    }
}

// -----------------------------------------------------------------------------
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(1 << 12),
                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),*) }
        }
    }
}