結果

問題 No.1742 Binary Indexed Train
ユーザー nebocconebocco
提出日時 2021-11-17 13:00:05
言語 Rust
(1.77.0)
結果
AC  
実行時間 77 ms / 3,000 ms
コード長 6,361 bytes
コンパイル時間 3,655 ms
コンパイル使用メモリ 156,772 KB
実行使用メモリ 7,176 KB
最終ジャッジ日時 2023-08-24 23:53:40
合計ジャッジ時間 9,790 ms
ジャッジサーバーID
（参考情報） 		judge11 / judge12
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
4,380 KB
testcase_01 AC 1 ms
4,384 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 73 ms
5,996 KB
testcase_04 AC 73 ms
5,992 KB
testcase_05 AC 73 ms
5,936 KB
testcase_06 AC 10 ms
4,380 KB
testcase_07 AC 10 ms
4,384 KB
testcase_08 AC 51 ms
7,076 KB
testcase_09 AC 52 ms
7,124 KB
testcase_10 AC 51 ms
7,176 KB
testcase_11 AC 51 ms
7,172 KB
testcase_12 AC 51 ms
7,076 KB
testcase_13 AC 75 ms
5,964 KB
testcase_14 AC 77 ms
5,940 KB
testcase_15 AC 9 ms
4,384 KB
testcase_16 AC 9 ms
4,384 KB
testcase_17 AC 22 ms
4,688 KB
testcase_18 AC 22 ms
4,680 KB
testcase_19 AC 9 ms
4,384 KB
testcase_20 AC 2 ms
4,384 KB
testcase_21 AC 10 ms
4,380 KB
testcase_22 AC 24 ms
4,900 KB
testcase_23 AC 3 ms
4,384 KB
testcase_24 AC 1 ms
4,380 KB
testcase_25 AC 26 ms
4,760 KB
testcase_26 AC 11 ms
4,384 KB
testcase_27 AC 22 ms
4,384 KB
testcase_28 AC 3 ms
4,380 KB
testcase_29 AC 25 ms
4,836 KB
testcase_30 AC 24 ms
4,384 KB
testcase_31 AC 66 ms
5,368 KB
testcase_32 AC 24 ms
4,504 KB
testcase_33 AC 8 ms
4,508 KB
testcase_34 AC 44 ms
4,388 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
warning: unused variable: `n`
 --> Main.rs:4:9
  |
4 |         n: usize, q: usize,
  |         ^ help: if this is intentional, prefix it with an underscore: `_n`
  |
  = note: `#[warn(unused_variables)]` on by default

warning: 1 warning emitted

ソースコード

diff # 

fn main() {
    let mut io = IO::new();
    input!{ from io,
        n: usize, q: usize,
        query: [(i64, i64); q]
    }
    for &(mut s, t) in &query {
        let mut c = 0;
        while s < t {
            c += 1;
            // io.println((s, t, (t - s).min(s & (-s)).leading_zeros()));
            s += 1 << (63 - (t - s).min(if s > 0 { s & (-s) } else { t - s }).leading_zeros());
        }
        io.println(c);
    }
}

// ------------ io module start ------------
use std::io::{stdout, BufWriter, Read, StdoutLock, Write};

pub struct IO {
    iter: std::str::SplitAsciiWhitespace<'static>,
    buf: BufWriter<StdoutLock<'static>>,
}

impl IO {
    pub fn new() -> Self {
        let mut input = String::new();
        std::io::stdin().read_to_string(&mut input).unwrap();
        let input = Box::leak(input.into_boxed_str());
        let out = Box::new(stdout());
        IO {
            iter: input.split_ascii_whitespace(),
            buf: BufWriter::new(Box::leak(out).lock()),
        }
    }
    fn scan_str(&mut self) -> &'static str {
        self.iter.next().unwrap()
    }
    pub fn scan<T: Scan>(&mut self) -> <T as Scan>::Output {
        <T as Scan>::scan(self)
    }
    pub fn scan_vec<T: Scan>(&mut self, n: usize) -> Vec<<T as Scan>::Output> {
        (0..n).map(|_| self.scan::<T>()).collect()
    }
    pub fn print<T: Print>(&mut self, x: T) {
        <T as Print>::print(self, x);
    }
    pub fn println<T: Print>(&mut self, x: T) {
        self.print(x);
        self.print("\n");
    }
    pub fn iterln<T: Print, I: IntoIterator<Item = T>>(&mut self, iter: I, delim: &str) {
        let mut iter = iter.into_iter();
        if let Some(v) = iter.next() {
            self.print(v);
            for v in iter {
                self.print(delim);
                self.print(v);
            }
        }
        self.print("\n");
    }
    pub fn flush(&mut self) {
        self.buf.flush().unwrap();
    }
}

impl Default for IO {
    fn default() -> Self {
        Self::new()
    }
}

pub trait Scan {
    type Output;
    fn scan(io: &mut IO) -> Self::Output;
}

macro_rules! impl_scan {
    ($($t:tt),*) => {
        $(
            impl Scan for $t {
                type Output = Self;
                fn scan(s: &mut IO) -> Self::Output {
                    s.scan_str().parse().unwrap()
                }
            }
        )*
    };
}

impl_scan!(i16, i32, i64, isize, u16, u32, u64, usize, String, f32, f64);

impl Scan for char {
    type Output = char;
    fn scan(s: &mut IO) -> Self::Output {
        s.scan_str().chars().next().unwrap()
    }
}

pub enum Bytes {}
impl Scan for Bytes {
    type Output = &'static [u8];
    fn scan(s: &mut IO) -> Self::Output {
        s.scan_str().as_bytes()
    }
}

pub enum Chars {}
impl Scan for Chars {
    type Output = Vec<char>;
    fn scan(s: &mut IO) -> Self::Output {
        s.scan_str().chars().collect()
    }
}

pub enum Usize1 {}
impl Scan for Usize1 {
    type Output = usize;
    fn scan(s: &mut IO) -> Self::Output {
        s.scan::<usize>().wrapping_sub(1)
    }
}

impl<T: Scan, U: Scan> Scan for (T, U) {
    type Output = (T::Output, U::Output);
    fn scan(s: &mut IO) -> Self::Output {
        (T::scan(s), U::scan(s))
    }
}

impl<T: Scan, U: Scan, V: Scan> Scan for (T, U, V) {
    type Output = (T::Output, U::Output, V::Output);
    fn scan(s: &mut IO) -> Self::Output {
        (T::scan(s), U::scan(s), V::scan(s))
    }
}

impl<T: Scan, U: Scan, V: Scan, W: Scan> Scan for (T, U, V, W) {
    type Output = (T::Output, U::Output, V::Output, W::Output);
    fn scan(s: &mut IO) -> Self::Output {
        (T::scan(s), U::scan(s), V::scan(s), W::scan(s))
    }
}

pub trait Print {
    fn print(w: &mut IO, x: Self);
}

macro_rules! impl_print_int {
    ($($t:ty),*) => {
        $(
            impl Print for $t {
                fn print(w: &mut IO, x: Self) {
                    w.buf.write_all(x.to_string().as_bytes()).unwrap();
                }
            }
        )*
    };
}

impl_print_int!(i16, i32, i64, isize, u16, u32, u64, usize, f32, f64);

impl Print for u8 {
    fn print(w: &mut IO, x: Self) {
        w.buf.write_all(&[x]).unwrap();
    }
}

impl Print for &[u8] {
    fn print(w: &mut IO, x: Self) {
        w.buf.write_all(x).unwrap();
    }
}

impl Print for &str {
    fn print(w: &mut IO, x: Self) {
        w.print(x.as_bytes());
    }
}

impl Print for String {
    fn print(w: &mut IO, x: Self) {
        w.print(x.as_bytes());
    }
}

impl<T: Print + Copy> Print for &T {
    fn print(w: &mut IO, x: Self) {
        w.print(*x);
    }
}

impl<T: Print, U: Print> Print for (T, U) {
    fn print(w: &mut IO, (x, y): Self) {
        w.print(x);
        w.print(" ");
        w.print(y);
    }
}

impl<T: Print, U: Print, V: Print> Print for (T, U, V) {
    fn print(w: &mut IO, (x, y, z): Self) {
        w.print(x);
        w.print(" ");
        w.print(y);
        w.print(" ");
        w.print(z);
    }
}

pub mod neboccoio_macro {
    #[macro_export]
    macro_rules! input {
        (@start $io:tt @read @rest) => {};

        (@start $io:tt @read @rest, $($rest: tt)*) => {
            input!(@start $io @read @rest $($rest)*)
        };

        (@start $io:tt @read @rest mut $($rest:tt)*) => {
            input!(@start $io @read @mut [mut] @rest $($rest)*)
        };

        (@start $io:tt @read @rest $($rest:tt)*) => {
            input!(@start $io @read @mut [] @rest $($rest)*)
        };

        (@start $io:tt @read @mut [$($mut:tt)?] @rest $var:tt: [[$kind:tt; $len2: expr]; $len1:expr] $($rest:tt)*) => {
            let $($mut)* $var = (0..$len1).map(|_| $io.scan_vec::<$kind>($len2)).collect::<<$kind as Scan>::Output>();
            input!(@start $io @read @rest $($rest)*)
        };

        (@start $io:tt @read @mut [$($mut:tt)?] @rest $var:tt: [$kind:tt; $len:expr] $($rest:tt)*) => {
            let $($mut)* $var = $io.scan_vec::<$kind>($len);
            input!(@start $io @read @rest $($rest)*)
        };

        (@start $io:tt @read @mut [$($mut:tt)?] @rest $var:tt: $kind:tt $($rest:tt)*) => {
            let $($mut)* $var = $io.scan::<$kind>();
            input!(@start $io @read @rest $($rest)*)
        };

        (from $io:tt $($rest:tt)*) => {
            input!(@start $io @read @rest $($rest)*)
        };
    }
}

// ------------ io module end ------------
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