結果

問題 No.1332 Range Nearest Query
ユーザー StrorkisStrorkis
提出日時 2021-01-09 19:53:34
言語 Rust
(1.77.0)
結果
AC  
実行時間 300 ms / 2,500 ms
コード長 4,964 bytes
コンパイル時間 5,172 ms
コンパイル使用メモリ 157,588 KB
実行使用メモリ 27,088 KB
最終ジャッジ日時 2023-08-11 16:50:43
合計ジャッジ時間 18,978 ms
ジャッジサーバーID
（参考情報） 		judge12 / judge14
このコードへのチャレンジ（β）

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
4,376 KB
testcase_01 AC 1 ms
4,384 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 254 ms
18,060 KB
testcase_04 AC 256 ms
17,968 KB
testcase_05 AC 255 ms
18,064 KB
testcase_06 AC 108 ms
26,764 KB
testcase_07 AC 107 ms
26,776 KB
testcase_08 AC 110 ms
26,772 KB
testcase_09 AC 108 ms
26,788 KB
testcase_10 AC 106 ms
26,760 KB
testcase_11 AC 107 ms
26,772 KB
testcase_12 AC 108 ms
26,764 KB
testcase_13 AC 109 ms
26,768 KB
testcase_14 AC 106 ms
26,772 KB
testcase_15 AC 106 ms
26,772 KB
testcase_16 AC 283 ms
27,012 KB
testcase_17 AC 284 ms
27,084 KB
testcase_18 AC 285 ms
27,016 KB
testcase_19 AC 291 ms
27,088 KB
testcase_20 AC 287 ms
27,072 KB
testcase_21 AC 285 ms
27,016 KB
testcase_22 AC 289 ms
27,072 KB
testcase_23 AC 288 ms
27,076 KB
testcase_24 AC 284 ms
27,068 KB
testcase_25 AC 287 ms
27,064 KB
testcase_26 AC 88 ms
26,684 KB
testcase_27 AC 52 ms
26,720 KB
testcase_28 AC 34 ms
5,640 KB
testcase_29 AC 36 ms
5,712 KB
testcase_30 AC 35 ms
5,608 KB
testcase_31 AC 33 ms
5,644 KB
testcase_32 AC 36 ms
5,604 KB
testcase_33 AC 37 ms
5,700 KB
testcase_34 AC 35 ms
5,640 KB
testcase_35 AC 34 ms
5,696 KB
testcase_36 AC 34 ms
5,688 KB
testcase_37 AC 36 ms
5,692 KB
testcase_38 AC 192 ms
16,300 KB
testcase_39 AC 77 ms
6,544 KB
testcase_40 AC 300 ms
26,988 KB
testcase_41 AC 110 ms
8,996 KB
testcase_42 AC 178 ms
16,068 KB
testcase_43 AC 133 ms
11,548 KB
testcase_44 AC 242 ms
17,524 KB
testcase_45 AC 210 ms
17,056 KB
testcase_46 AC 159 ms
11,824 KB
testcase_47 AC 197 ms
16,664 KB
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 # 

struct Scanner<R> { r: R, buf: Vec<u8> }

impl<R: std::io::BufRead> Scanner<R> {
    fn new(r: R) -> Scanner<R> {
        Scanner { r, buf: Vec::with_capacity(8000) }
    }

    fn next(&mut self) -> &str {
        self.buf.clear();
        loop {
            let (done, used) = {
                let available = self.r.fill_buf().unwrap();
                match available.iter().position(|b| !b.is_ascii_whitespace()) {
                    Some(i) => (true, i),
                    None => (false, available.len()),
                }
            };
            self.r.consume(used);
            if done || used == 0 { break; }
        }
        loop {
            let (done, used) = {
                let available = self.r.fill_buf().unwrap();
                match available.iter().position(|b| b.is_ascii_whitespace()) {
                    Some(i) => {
                        self.buf.extend_from_slice(&available[..i]);
                        (true, i)
                    }
                    None => {
                        self.buf.extend_from_slice(&available);
                        (false, available.len())
                    }
                }
            };
            self.r.consume(used);
            if done || used == 0 {
                unsafe {
                    return std::str::from_utf8_unchecked(&self.buf);
                }
            }
        }
    }
}

macro_rules! parse {
    ($s:expr, Chars) => ($s.chars().collect::<Vec<_>>());
    ($s:expr, Bytes) => ($s.bytes().collect::<Vec<_>>());
    ($s:expr, Usize1) => (parse!($s, usize) - 1);
    ($s:expr, $t:ty) => ($s.parse::<$t>().unwrap());
}

macro_rules! read {
    ($sc:expr, [$t:tt; $n:expr]) => (
        (0..$n).map(|_| read!($sc, $t)).collect::<Vec<_>>()
    );
    ($sc:expr, ($($t:tt),*)) => (($(read!($sc, $t)),*));
    ($sc:expr, $t:ident) => (parse!($sc.next(), $t));
    ($sc:expr, $($t:tt),*) => (($(read!($sc, $t)),*));
}

// reference: https://github.com/atcoder/ac-library
struct SegmentTree<T> {
    n: usize, len: usize, height: usize,
    op: fn(T, T) -> T, e: fn() -> T,
    node: Vec<T>,
}

impl<T: Clone + Copy> SegmentTree<T> {
    fn new(n: usize, op: fn(T, T) -> T, e: fn() -> T) -> SegmentTree<T> {
        let (mut len, mut height) = (1, 1);
        while len < n {
            len *= 2;
            height += 1;
        }
        let node = vec![e(); 2 * len];
        SegmentTree { n, len, height, op, e, node }
    }

    fn from(v: &[T], op: fn(T, T) -> T, e: fn() -> T) -> SegmentTree<T> {
        let mut st = SegmentTree::new(v.len(), op, e);
        for i in 0..v.len() { st.node[i + st.len] = v[i]; }
        for i in (1..st.len).rev() {
            st.update(i);
        }
        st
    }

    fn update(&mut self, k: usize) {
        self.node[k] = (self.op)(self.node[2 * k], self.node[2 * k + 1]);
    }

    fn set(&mut self, mut p: usize, x: T) {
        assert!(p < self.n);
        p += self.len;
        self.node[p] = x;
        for i in 1..self.height { self.update(p >> i) };
    }

    fn prod(&self, mut l: usize, mut r: usize) -> T {
        assert!(l <= r && r <= self.n);
        let (mut sml, mut smr) = ((self.e)(), (self.e)());
        l += self.len;
        r += self.len;

        while l < r {
            if l & 1 != 0 {
                sml = (self.op)(sml, self.node[l]);
                l += 1;
            }
            if r & 1 != 0 {
                r -= 1;
                smr = (self.op)(self.node[r], smr);
            }
            l >>= 1;
            r >>= 1;
        }

        (self.op)(sml, smr)
    }
}

fn main() {
    use std::io::Write;
    let (stdin, stdout) = (std::io::stdin(), std::io::stdout());
    let mut scanner = Scanner::new(stdin.lock());
    let mut writer = std::io::BufWriter::new(stdout.lock());
    macro_rules! scan {
        ($($t:tt)*) => (read!(scanner, $($t)*));
    }
    macro_rules! println {
        ($($arg:tt)*) => (writeln!(writer, $($arg)*).ok());
    }

    const INF: i64 = 1 << 60;
    use std::cmp::{max, min};

    let n = scan!(usize);
    let x = scan!([i64; n]);
    let q = scan!(usize);
    let queries = scan!([(Usize1, Usize1, i64); q]);

    let mut low_st = SegmentTree::new(n, |v1, v2| max(v1, v2), || -INF);
    let mut high_st = SegmentTree::from(&x, |v1, v2| min(v1, v2), || INF);

    let mut query_order = (0..q).collect::<Vec<_>>();
    query_order.sort_by_key(|&i| queries[i].2);
    let mut x_order = (0..n).collect::<Vec<_>>();
    x_order.sort_by_key(|&i| x[i]);

    let mut ans = vec![0; q];
    let mut k = 0;
    for i in query_order {
        let (l, r, y) = queries[i];
        while k < n && x[x_order[k]] <= y {
            let j = x_order[k];
            low_st.set(j, x[j]);
            high_st.set(j, std::i64::MAX);
            k += 1;
        }
        ans[i] = min(
            y - low_st.prod(l, r + 1),
            high_st.prod(l, r + 1) - y,
        );
    }

    for ans in ans {
        println!("{}", ans);
    }
}
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