#550820 (Rust) No.1209 XOR Into You

• 問題: No.1209 XOR Into You
• ユーザー: o2c
• 提出日時: 2020-09-11 19:56:15
• 言語: Rust (1.77.0)
• 結果: AC
• 実行時間: 119 ms / 2,000 ms
• コード長: 3,783 bytes
• コンパイル時間: 3,249 ms
• コンパイル使用メモリ: 167,580 KB
• 実行使用メモリ: 17,100 KB
• 最終ジャッジ日時: 2023-08-27 05:23:23
• 合計ジャッジ時間: 8,636 ms
• ジャッジサーバーID （参考情報）: judge15 / judge11

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 4,376 KB
testcase_01	AC	1 ms; 4,376 KB
testcase_02	AC	1 ms; 4,376 KB
testcase_03	AC	1 ms; 4,380 KB
testcase_04	AC	14 ms; 4,428 KB
testcase_05	AC	13 ms; 4,456 KB
testcase_06	AC	30 ms; 6,988 KB
testcase_07	AC	99 ms; 14,764 KB
testcase_08	AC	85 ms; 13,292 KB
testcase_09	AC	87 ms; 13,296 KB
testcase_10	AC	69 ms; 11,196 KB
testcase_11	AC	87 ms; 13,196 KB
testcase_12	AC	77 ms; 12,384 KB
testcase_13	AC	92 ms; 13,844 KB
testcase_14	AC	74 ms; 11,892 KB
testcase_15	AC	79 ms; 12,684 KB
testcase_16	AC	75 ms; 12,440 KB
testcase_17	AC	68 ms; 12,040 KB
testcase_18	AC	119 ms; 16,460 KB
testcase_19	AC	79 ms; 12,428 KB
testcase_20	AC	93 ms; 13,844 KB
testcase_21	AC	65 ms; 11,072 KB
testcase_22	AC	49 ms; 17,000 KB
testcase_23	AC	49 ms; 17,008 KB
testcase_24	AC	49 ms; 17,004 KB
testcase_25	AC	104 ms; 17,016 KB
testcase_26	AC	112 ms; 16,960 KB
testcase_27	AC	111 ms; 17,024 KB
testcase_28	AC	107 ms; 17,100 KB
testcase_29	AC	107 ms; 17,016 KB
testcase_30	AC	104 ms; 16,972 KB
testcase_31	AC	49 ms; 8,464 KB
testcase_32	AC	50 ms; 8,384 KB
testcase_33	AC	50 ms; 8,420 KB
testcase_34	AC	50 ms; 8,384 KB
testcase_35	AC	49 ms; 8,500 KB
testcase_36	AC	50 ms; 8,472 KB
testcase_37	AC	21 ms; 8,440 KB
testcase_38	AC	84 ms; 14,648 KB
testcase_39	AC	73 ms; 12,980 KB
testcase_40	AC	48 ms; 16,956 KB

コンパイルメッセージ

warning: variable does not need to be mutable
  --> Main.rs:10:338
   |
10 | ...es !read {($($t :tt ) ,*;$n :expr ) =>{{let stdin =::std ::io ::stdin () ;let ret =::std ::io ::BufRead ::lines (stdin .lock () ) .take ($n ) .map (|line |{let line =line .unwrap () ;let mut it =line .split_whitespace () ;_read !(it ;$($t ) ,*) } ) .collect ::<Vec <_ >>() ;ret } } ;($($t :tt ) ,*) =>{{let line =readln () ;let mut it =l...
   |                                                                                                                                                                                                                                                                                                                                            ----^^
   |                                                                                                                                                                                                                                                                                                                                            |
   |                                                                                                                                                                                                                                                                                                                                            help: remove this `mut`
...
67 | ... = read!([usize]);
   |       -------------- in this macro invocation
   |
   = note: `#[warn(unused_mut)]` on by default
   = note: this warning originates in the macro `read` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: variable does not need to be mutable
  --> Main.rs:10:338
   |
10 | ...es !read {($($t :tt ) ,*;$n :expr ) =>{{let stdin =::std ::io ::stdin () ;let ret =::std ::io ::BufRead ::lines (stdin .lock () ) .take ($n ) .map (|line |{let line =line .unwrap () ;let mut it =line .spli

ソースコード

#[allow(unused_imports)]
use std::collections::*;
pub fn readln() -> String {
    let mut line = String::new();
    ::std::io::stdin()
        .read_line(&mut line)
        .unwrap_or_else(|e| panic!("{}", e));
    line
}
macro_rules !read {($($t :tt ) ,*;$n :expr ) =>{{let stdin =::std ::io ::stdin () ;let ret =::std ::io ::BufRead ::lines (stdin .lock () ) .take ($n ) .map (|line |{let line =line .unwrap () ;let mut it =line .split_whitespace () ;_read !(it ;$($t ) ,*) } ) .collect ::<Vec <_ >>() ;ret } } ;($($t :tt ) ,*) =>{{let line =readln () ;let mut it =line .split_whitespace () ;_read !(it ;$($t ) ,*) } } ;}
macro_rules !_read {($it :ident ;[char ] ) =>{_read !($it ;String ) .chars () .collect ::<Vec <_ >>() } ;($it :ident ;[u8 ] ) =>{Vec ::from (_read !($it ;String ) .into_bytes () ) } ;($it :ident ;usize1 ) =>{$it .next () .unwrap_or_else (||panic !("input mismatch" ) ) .parse ::<usize >() .unwrap_or_else (|e |panic !("{}" ,e ) ) -1 } ;($it :ident ;[usize1 ] ) =>{$it .map (|s |s .parse ::<usize >() .unwrap_or_else (|e |panic !("{}" ,e ) ) -1 ) .collect ::<Vec <_ >>() } ;($it :ident ;[$t :ty ] ) =>{$it .map (|s |s .parse ::<$t >() .unwrap_or_else (|e |panic !("{}" ,e ) ) ) .collect ::<Vec <_ >>() } ;($it :ident ;$t :ty ) =>{$it .next () .unwrap_or_else (||panic !("input mismatch" ) ) .parse ::<$t >() .unwrap_or_else (|e |panic !("{}" ,e ) ) } ;($it :ident ;$($t :tt ) ,+) =>{($(_read !($it ;$t ) ) ,*) } ;}

struct FenwickTree<T> {
    n: usize,
    tree: Vec<T>,
    e: T,
}
#[allow(dead_code)]
impl<T: std::ops::AddAssign + Clone> FenwickTree<T> {
    fn new(n: usize, e: T) -> Self {
        FenwickTree {
            n,
            tree: vec![e.clone(); n],
            e,
        }
    }
    /// A[i] += w
    fn add<U: Clone>(&mut self, mut idx: usize, w: U)
    where
        T: std::ops::AddAssign<U>,
    {
        idx += 1;
        while idx <= self.n {
            self.tree[idx - 1] += w.clone();
            idx += idx & idx.wrapping_neg();
        }
    }
    /// return A[0] + ... + A[idx-1]
    fn accum(&self, mut idx: usize) -> T {
        let mut sum = self.e.clone();
        while idx > 0 {
            sum += self.tree[idx - 1].clone();
            idx &= idx - 1;
        }
        sum
    }
    /// return ∑ d[i] for i in R
    fn sum<R>(&self, interval: R) -> T
    where
        T: std::ops::Sub<Output = T>,
        R: std::ops::RangeBounds<usize>,
    {
        let r = match interval.end_bound() {
            std::ops::Bound::Excluded(&a) => a,
            std::ops::Bound::Included(&a) => a + 1,
            _ => self.n,
        };
        match interval.start_bound() {
            std::ops::Bound::Included(&l) => self.accum(r) - self.accum(l),
            _ => self.accum(r),
        }
    }
}

fn main() {
    let n = read!(usize);
    let a = read!([usize]);
    let b = read!([usize]);
    if a[0] != b[0] || a[n - 1] != b[n - 1] {
        println!("-1");
        return;
    }

    let a: Vec<_> = a.windows(2).map(|w| w[0] ^ w[1]).collect();
    let b: Vec<_> = b.windows(2).map(|w| w[0] ^ w[1]).collect();
    let mut c = a.clone();
    let mut d = b.clone();
    c.sort();
    d.sort();
    if c != d {
        println!("-1");
        return;
    }
    c.dedup();

    let m = c.len();
    let map = (0..m).map(|i| (c[i], i)).collect::<BTreeMap<_, _>>();
    let mut q = vec![std::collections::VecDeque::<usize>::new(); m];
    for (i, a) in a.iter().enumerate() {
        q[*map.get(a).unwrap()].push_back(i);
    }

    let mut ft = FenwickTree::new(n - 1, 0i64);
    for i in 0..n - 1 {
        ft.add(i, 1);
    }
    let mut ans = 0;
    for b in b.iter() {
        let i = q[*map.get(b).unwrap()].pop_front().unwrap();
        ans += ft.sum(..i);
        ft.add(i, -1);
    }
    println!("{}", ans);
}