#212634 (Rust) No.408 五輪ピック

• 問題: No.408 五輪ピック
• ユーザー: sntea
• 提出日時: 2017-10-28 15:54:44
• 言語: Rust (1.77.0)
• 結果: AC
• 実行時間: 22 ms / 5,000 ms
• コード長: 4,119 bytes
• コンパイル時間: 13,010 ms
• コンパイル使用メモリ: 377,208 KB
• 実行使用メモリ: 7,296 KB
• 最終ジャッジ日時: 2024-05-01 20:57:00
• 合計ジャッジ時間: 13,294 ms
• ジャッジサーバーID （参考情報）: judge5 / judge4

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 5,248 KB
testcase_01	AC	1 ms; 5,248 KB
testcase_02	AC	1 ms; 5,248 KB
testcase_03	AC	0 ms; 5,376 KB
testcase_04	AC	1 ms; 5,376 KB
testcase_05	AC	10 ms; 5,376 KB
testcase_06	AC	8 ms; 5,376 KB
testcase_07	AC	10 ms; 5,376 KB
testcase_08	AC	8 ms; 5,376 KB
testcase_09	AC	9 ms; 5,376 KB
testcase_10	AC	7 ms; 5,376 KB
testcase_11	AC	7 ms; 5,376 KB
testcase_12	AC	12 ms; 5,376 KB
testcase_13	AC	10 ms; 5,376 KB
testcase_14	AC	3 ms; 5,376 KB
testcase_15	AC	11 ms; 5,376 KB
testcase_16	AC	12 ms; 5,376 KB
testcase_17	AC	12 ms; 5,376 KB
testcase_18	AC	12 ms; 5,376 KB
testcase_19	AC	13 ms; 5,376 KB
testcase_20	AC	4 ms; 5,376 KB
testcase_21	AC	2 ms; 5,376 KB
testcase_22	AC	6 ms; 5,376 KB
testcase_23	AC	22 ms; 7,296 KB
testcase_24	AC	13 ms; 6,400 KB
testcase_25	AC	11 ms; 5,632 KB
testcase_26	AC	14 ms; 6,016 KB
testcase_27	AC	12 ms; 5,376 KB
testcase_28	AC	8 ms; 5,376 KB
testcase_29	AC	8 ms; 5,376 KB
testcase_30	AC	0 ms; 5,376 KB
testcase_31	AC	1 ms; 5,376 KB

コンパイルメッセージ

warning: unused macro definition: `readlvec`
  --> src/main.rs:29:14
   |
29 | macro_rules! readlvec {
   |              ^^^^^^^^
   |
   = note: `#[warn(unused_macros)]` on by default

warning: unused macro definition: `mvec`
  --> src/main.rs:39:14
   |
39 | macro_rules! mvec {
   |              ^^^^

warning: unused macro definition: `debug`
  --> src/main.rs:48:14
   |
48 | macro_rules! debug {
   |              ^^^^^

warning: function `printiter` is never used
  --> src/main.rs:54:4
   |
54 | fn printiter<'a, T>(v: &'a T)
   |    ^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: method `size` is never used
   --> src/main.rs:122:8
    |
114 | impl Graph {
    | ---------- method in this implementation
...
122 |     fn size(&self) -> usize{
    |        ^^^^

ソースコード

// use std::ops::{Index, IndexMut};
// use std::cmp::{Ordering, min, max};
// use std::collections::{BinaryHeap, BTreeMap};
// use std::collections::btree_map::Entry::{Occupied, Vacant};
// use std::clone::Clone;

fn getline() -> String{
    let mut res = String::new();
    std::io::stdin().read_line(&mut res).ok();
    res
}

macro_rules! readl {
    ($t: ty) => {
        {
            let s = getline();
            s.trim().parse::<$t>().unwrap()
        }
    };
    ($( $t: ty),+ ) => {
        {
            let s = getline();
            let mut iter = s.trim().split(' ');
            ($(iter.next().unwrap().parse::<$t>().unwrap(),)*) 
        }
    };
}

macro_rules! readlvec {
    ($t: ty) => {
        {
            let s = getline();
            let iter = s.trim().split(' ');
            iter.map(|x| x.parse().unwrap()).collect::<Vec<$t>>()
        }
    }
}

macro_rules! mvec {
    ($v: expr, $s: expr) => {
        vec![$v; $s]
    };
    ($v: expr, $s: expr, $($t: expr),*) => {
        vec![mvec!($v, $($t),*); $s]
    };
}

macro_rules! debug {
    ($x: expr) => {
        println!("{}: {:?}", stringify!($x), $x)
    }
}

fn printiter<'a, T>(v: &'a T)
where
    &'a T: std::iter::IntoIterator, 
    <&'a T as std::iter::IntoIterator>::Item: std::fmt::Display {
    for (i,e) in v.into_iter().enumerate() {
        if i != 0 {
            print!(" ");
        }
        print!("{}", e);
    }
    println!("");
}

type Cost = i64;

#[derive(Clone)]
struct Edge {
    to: usize,
    cost: Cost,
}

impl Ord for Edge {
    fn cmp(&self, other: &Edge) -> std::cmp::Ordering {
        (-self.cost).cmp(&(-other.cost))
    }
}

impl PartialOrd for Edge {
    fn partial_cmp(&self, other: &Edge) -> Option<std::cmp::Ordering> {
        Some(self.cmp(other))
    }
}

impl Eq for Edge {}

impl PartialEq for Edge {
    fn eq(&self, other: &Edge) -> bool {
        self.cost == other.cost
    }
}

#[derive(Clone)]
struct Graph {
    adj: Vec<Vec<Edge>>,
}

impl std::ops::Index<usize> for Graph {
    type Output = Vec<Edge>;

    fn index(&self, i: usize) -> &Vec<Edge> {
        &self.adj[i]
    }
}

impl std::ops::IndexMut<usize> for Graph {
    fn index_mut<'a>(&'a mut self, i: usize) -> &'a mut Vec<Edge> {
        &mut self.adj[i]
    }
}

impl Graph {

    fn new(n: usize) -> Graph{
        Graph {
            adj: vec![vec![]; n],
        }
    }

    fn size(&self) -> usize{
        self.adj.capacity()
    }

    fn add_edge(&mut self, from: usize, to_: usize, cost_: Cost) {
        self.adj[from].push(Edge{to: to_, cost: cost_});
    }

    fn add_uedge(&mut self, from: usize, to_: usize, cost_: Cost) {
        self.add_edge(from, to_, cost_);
        self.add_edge(to_, from, cost_);
    }

}


use std::collections::HashSet;

fn main() {
    let (n, m) = readl!(usize, usize); 
    let g = {
       let mut g = Graph::new(n);
       for _ in 0..m {
           let (a, b) = readl!(usize, usize);
           g.add_uedge(a-1, b-1, -1);
       }
       g
    };
    let mut pa = vec![HashSet::new(); n];
    for e1 in &g[0] {
        for e2 in &g[e1.to] {
            if e2.to != 0 {
                pa[e2.to].insert(e1.to);
            }
        }
    }
    // let pa: Vec<Vec<_>> = pa.into_iter().map(|s| {
    //     s.into_iter().collect()
    // }).collect();
    // debug!(pa);

    let mut f = false;
    for p in 0..n {
        for e in &g[p] {
            if pa[p].len() == 0 || pa[e.to].len() == 0 {
                continue;
            }
            if pa[p].len() < 3 && pa[e.to].len() < 3 {
                for ee in &pa[p] {
                    if *ee == e.to {
                        continue;
                    }
                    for eee in &pa[e.to] {
                        if *eee == p {
                            continue;
                        }
                        if *ee != *eee {
                            f = true;
                        }
                    }
                }
            } else {
                f = true;
            }
        }
    }
    if f {
        println!("YES");
    } else {
        println!("NO");
    }
}