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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#320839#8212. Football in Osijekucup-team635#WA 0ms2112kbRust6.4kb2024-02-03 22:18:092024-02-03 22:18:09

Judging History

你现在查看的是最新测评结果

  • [2024-02-03 22:18:09]
  • 评测
  • 测评结果:WA
  • 用时:0ms
  • 内存:2112kb
  • [2024-02-03 22:18:09]
  • 提交

answer

use std::io::Write;
use std::collections::*;

type Map<K, V> = BTreeMap<K, V>;
type Set<T> = BTreeSet<T>;
type Deque<T> = VecDeque<T>;

fn main() {
    input! {
        n: usize,
        a: [usize1; n],
    }
    let mut dsu = DSU::new(n);
    for i in 0..n {
        dsu.unite(i, a[i]);
    }
    let mut cycle = vec![0; n];
    let mut hige = vec![0; n];
    #[derive(Clone, Copy, Eq, PartialEq)]
    enum State {
        No,
        Cycle,
        Hige(usize),
        On,
    }
    let mut state = vec![State::No; n];
    for i in 0..n {
        if state[i] != State::No {
            continue;
        }
        let mut pos = i;
        let mut stack = vec![];
        while state[pos] == State::No {
            stack.push(pos);
            state[pos] = State::On;
            pos = a[pos];
        }
        if state[pos] == State::On {
            let s = pos;
            let mut len = 1;
            pos = a[pos];
            while pos != s {
                pos = a[pos];
                len += 1;
            }
            cycle[dsu.root(i)] = len;
            for _ in 0..len {
                state[pos] = State::Cycle;
                pos = a[pos];
                stack.pop();
            }
        }
        for &s in stack.iter().rev() {
            let d = if let State::Hige(x) = state[a[s]] {
                x + 1
            } else {
                1
            };
            state[s] = State::Hige(d);
            hige[s] = hige[s].max(d);
        }
    }
    let inf = n + 2;
    let mut ans = vec![inf; n + 1];
    let mut max_c = 0;
    for i in 0..n {
        if i == dsu.root(i) {
            let c = cycle[i];
            let h = hige[i];
            ans[c..=(c + h)].fill(0);
            max_c = max_c.max(c);
        }
    }
    for i in 1..=max_c {
        ans[i] = ans[i].min(1);
    }
    let mut ord = (0..n).collect::<Vec<_>>();
    ord.sort_by_key(|x| {
        match state[*x] {
            State::Hige(d) => d,
            _ => 0,
        }
    });
    let mut used = vec![false; n];
    let mut data = vec![];
    for &v in ord.iter().rev() {
        let mut val = 0;
        let mut pos = v;
        while !used[pos] {
            val += 1;
            used[pos] = true;
            pos = a[pos];
        }
        if val > 0 {
            data.push(val);
        }
    }
    data.sort();
    let mut sum = 0;
    for (i, v) in data.iter().rev().enumerate() {
        sum += *v;
        for x in (1..=sum).rev() {
            if ans[x] != inf {
                break;
            }
            ans[x] = i;
        }
    }
    use util::*;
    println!("{}", ans[1..].iter().join(" "));
}

// ---------- 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 union_find ----------
pub struct DSU {
    p: Vec<i32>,
}
impl DSU {
    pub fn new(n: usize) -> DSU {
        assert!(n < std::i32::MAX as usize);
        DSU { p: vec![-1; n] }
    }
    pub fn init(&mut self) {
        self.p.iter_mut().for_each(|p| *p = -1);
    }
    pub fn root(&self, mut x: usize) -> usize {
        assert!(x < self.p.len());
        while self.p[x] >= 0 {
            x = self.p[x] as usize;
        }
        x
    }
    pub fn same(&self, x: usize, y: usize) -> bool {
        assert!(x < self.p.len() && y < self.p.len());
        self.root(x) == self.root(y)
    }
    pub fn unite(&mut self, x: usize, y: usize) -> Option<(usize, usize)> {
        assert!(x < self.p.len() && y < self.p.len());
        let mut x = self.root(x);
        let mut y = self.root(y);
        if x == y {
            return None;
        }
        if self.p[x] > self.p[y] {
            std::mem::swap(&mut x, &mut y);
        }
        self.p[x] += self.p[y];
        self.p[y] = x as i32;
        Some((x, y))
    }
    pub fn parent(&self, x: usize) -> Option<usize> {
        assert!(x < self.p.len());
        let p = self.p[x];
        if p >= 0 {
            Some(p as usize)
        } else {
            None
        }
    }
    pub fn sum<F>(&self, mut x: usize, mut f: F) -> usize
    where
        F: FnMut(usize),
    {
        while let Some(p) = self.parent(x) {
            f(x);
            x = p;
        }
        x
    }
    pub fn size(&self, x: usize) -> usize {
        assert!(x < self.p.len());
        let r = self.root(x);
        (-self.p[r]) as usize
    }
}
//---------- end union_find ----------

mod util {
    pub trait Join {
        fn join(self, sep: &str) -> String;
    }

    impl<T, I> Join for I
    where
        I: Iterator<Item = T>,
        T: std::fmt::Display,
    {
        fn join(self, sep: &str) -> String {
            let mut s = String::new();
            use std::fmt::*;
            for (i, v) in self.enumerate() {
                if i > 0 {
                    write!(&mut s, "{}", sep).ok();
                }
                write!(&mut s, "{}", v).ok();
            }
            s
        }
    }
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 2112kb

input:

5
2 3 1 3 5

output:

0 1 0 0 1

result:

ok 5 number(s): "0 1 0 0 1"

Test #2:

score: 0
Accepted
time: 0ms
memory: 2056kb

input:

1
1

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: 0
Accepted
time: 0ms
memory: 2060kb

input:

2
2 2

output:

0 0

result:

ok 2 number(s): "0 0"

Test #4:

score: 0
Accepted
time: 0ms
memory: 2096kb

input:

10
4 7 2 8 4 3 4 9 7 3

output:

1 1 1 0 0 0 0 1 2 3

result:

ok 10 numbers

Test #5:

score: -100
Wrong Answer
time: 0ms
memory: 2108kb

input:

10
8 7 4 8 3 4 2 5 3 7

output:

1 0 1 0 0 1 1 1 2 3

result:

wrong answer 3rd numbers differ - expected: '0', found: '1'