結果

問題 No.2242 Cities and Teleporters
ユーザー akakimidoriakakimidori
提出日時 2023-03-10 23:16:15
言語 Rust
(1.77.0 + proconio)
結果
WA  
実行時間 -
コード長 6,270 bytes
コンパイル時間 13,853 ms
コンパイル使用メモリ 384,040 KB
実行使用メモリ 77,948 KB
最終ジャッジ日時 2024-09-18 05:25:38
合計ジャッジ時間 20,437 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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
6,812 KB
testcase_01 AC 1 ms
6,820 KB
testcase_02 AC 1 ms
6,948 KB
testcase_03 AC 1 ms
6,944 KB
testcase_04 WA -
testcase_05 AC 391 ms
77,512 KB
testcase_06 AC 352 ms
77,948 KB
testcase_07 AC 335 ms
77,464 KB
testcase_08 AC 369 ms
77,032 KB
testcase_09 AC 257 ms
77,240 KB
testcase_10 AC 179 ms
77,252 KB
testcase_11 AC 161 ms
28,648 KB
testcase_12 AC 170 ms
27,112 KB
testcase_13 AC 207 ms
55,260 KB
testcase_14 AC 246 ms
64,832 KB
testcase_15 AC 208 ms
55,140 KB
testcase_16 AC 221 ms
55,548 KB
testcase_17 AC 270 ms
64,736 KB
testcase_18 AC 183 ms
45,600 KB
testcase_19 AC 152 ms
32,900 KB
testcase_20 AC 207 ms
53,688 KB
testcase_21 AC 180 ms
41,964 KB
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 WA -
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ソースコード

diff # 

use std::io::Write;

fn run() {
    input! {
        n: usize,
        h: [i32; n],
        t: [i32; n],
        q: usize,
        ask: [(usize1, usize1); q],
    }
    let mut ord = (0..n).collect::<Vec<_>>();
    ord.sort_by_key(|x| (h[*x], -t[*x]));
    let mut trans = vec![0; n];
    for i in 0..n {
        let pos = ord.upper_bound_by_key(&t[ord[i]], |x| h[*x]);
        trans[i] = pos;
    }
    let mut memo = vec![];
    let mut memo_max = vec![];
    loop {
        let mut max = trans.clone();
        for i in 1..n {
            max[i] = max[i].max(max[i - 1]);
        }
        let mut next = vec![0; n];
        for i in 0..n {
            if trans[i] > 0 {
                next[i] = max[trans[i] - 1];
            }
        }
        memo.push(trans.clone());
        memo_max.push(max);
        if next == trans {
            break;
        }
        trans = next;
    }
    let trans = &memo[0];
    let memo = &memo_max;
    let mut inv = vec![0; n];
    for i in 0..n {
        inv[ord[i]] = i;
    }
    let out = std::io::stdout();
    let mut out = std::io::BufWriter::new(out.lock());
    for (a, b) in ask {
        if a == b {
            writeln!(out, "0").ok();
            continue;
        }
        if trans[inv[a]] == 0 {
            writeln!(out, "-1").ok();
            continue;
        }
        let b = inv[b];
        let mut ans = 1;
        let mut x = trans[inv[a]] - 1;
        for (i, memo) in memo.iter().enumerate().rev() {
            if memo[x] > 0 && memo[x] <= b {
                ans += 1 << i;
                x = memo[x] - 1;
            }
        }
        if x < b && memo[0][x] > 0 {
            ans += 1;
            x = memo[0][x] - 1;
        }
        if x < b {
            ans = -1;
        }
        writeln!(out, "{}", ans).ok();
    }
}

fn main() {
    run();
}

// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
#[macro_export]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

#[macro_export]
macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

#[macro_export]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------
// ---------- begin super slice ----------
pub trait SuperSlice {
    type Item;
    fn lower_bound(&self, key: &Self::Item) -> usize
    where
        Self::Item: Ord;
    fn lower_bound_by<F>(&self, f: F) -> usize
    where
        F: FnMut(&Self::Item) -> std::cmp::Ordering;
    fn lower_bound_by_key<K, F>(&self, key: &K, f: F) -> usize
    where
        K: Ord,
        F: FnMut(&Self::Item) -> K;
    fn upper_bound(&self, key: &Self::Item) -> usize
    where
        Self::Item: Ord;
    fn upper_bound_by<F>(&self, f: F) -> usize
    where
        F: FnMut(&Self::Item) -> std::cmp::Ordering;
    fn upper_bound_by_key<K, F>(&self, key: &K, f: F) -> usize
    where
        K: Ord,
        F: FnMut(&Self::Item) -> K;
    fn next_permutation(&mut self) -> bool
    where
        Self::Item: Ord;
    fn next_permutation_by<F>(&mut self, f: F) -> bool
    where
        F: FnMut(&Self::Item, &Self::Item) -> std::cmp::Ordering;
    fn prev_permutation(&mut self) -> bool
    where
        Self::Item: Ord;
}

impl<T> SuperSlice for [T] {
    type Item = T;
    fn lower_bound(&self, key: &Self::Item) -> usize
    where
        T: Ord,
    {
        self.lower_bound_by(|p| p.cmp(key))
    }
    fn lower_bound_by<F>(&self, mut f: F) -> usize
    where
        F: FnMut(&Self::Item) -> std::cmp::Ordering,
    {
        self.binary_search_by(|p| f(p).then(std::cmp::Ordering::Greater))
            .unwrap_err()
    }
    fn lower_bound_by_key<K, F>(&self, key: &K, mut f: F) -> usize
    where
        K: Ord,
        F: FnMut(&Self::Item) -> K,
    {
        self.lower_bound_by(|p| f(p).cmp(key))
    }
    fn upper_bound(&self, key: &Self::Item) -> usize
    where
        T: Ord,
    {
        self.upper_bound_by(|p| p.cmp(key))
    }
    fn upper_bound_by<F>(&self, mut f: F) -> usize
    where
        F: FnMut(&Self::Item) -> std::cmp::Ordering,
    {
        self.binary_search_by(|p| f(p).then(std::cmp::Ordering::Less))
            .unwrap_err()
    }
    fn upper_bound_by_key<K, F>(&self, key: &K, mut f: F) -> usize
    where
        K: Ord,
        F: FnMut(&Self::Item) -> K,
    {
        self.upper_bound_by(|p| f(p).cmp(key))
    }
    fn next_permutation(&mut self) -> bool
    where
        T: Ord,
    {
        self.next_permutation_by(|a, b| a.cmp(b))
    }
    fn next_permutation_by<F>(&mut self, mut f: F) -> bool
    where
        F: FnMut(&Self::Item, &Self::Item) -> std::cmp::Ordering,
    {
        use std::cmp::Ordering::*;
        if let Some(x) = self.windows(2).rposition(|a| f(&a[0], &a[1]) == Less) {
            let y = self.iter().rposition(|b| f(&self[x], b) == Less).unwrap();
            self.swap(x, y);
            self[(x + 1)..].reverse();
            true
        } else {
            self.reverse();
            false
        }
    }
    fn prev_permutation(&mut self) -> bool
    where
        T: Ord,
    {
        self.next_permutation_by(|a, b| a.cmp(b).reverse())
    }
}
// ---------- end super slice ----------
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