結果

問題 No.1473 おでぶなおばけさん
ユーザー uw_yu1rabbituw_yu1rabbit
提出日時 2021-04-09 22:57:46
言語 Rust
(1.77.0)
結果
AC  
実行時間 497 ms / 2,000 ms
コード長 3,511 bytes
コンパイル時間 5,459 ms
コンパイル使用メモリ 153,264 KB
実行使用メモリ 14,568 KB
最終ジャッジ日時 2023-09-07 12:36:58
合計ジャッジ時間 10,930 ms
ジャッジサーバーID
(参考情報)
judge11 / judge13
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
4,376 KB
testcase_01 AC 1 ms
4,376 KB
testcase_02 AC 262 ms
13,828 KB
testcase_03 AC 112 ms
11,924 KB
testcase_04 AC 162 ms
8,544 KB
testcase_05 AC 53 ms
4,380 KB
testcase_06 AC 241 ms
12,236 KB
testcase_07 AC 203 ms
14,568 KB
testcase_08 AC 457 ms
14,532 KB
testcase_09 AC 199 ms
14,512 KB
testcase_10 AC 42 ms
8,544 KB
testcase_11 AC 45 ms
9,828 KB
testcase_12 AC 40 ms
9,300 KB
testcase_13 AC 26 ms
6,432 KB
testcase_14 AC 20 ms
5,116 KB
testcase_15 AC 38 ms
8,460 KB
testcase_16 AC 34 ms
7,716 KB
testcase_17 AC 3 ms
4,380 KB
testcase_18 AC 5 ms
4,376 KB
testcase_19 AC 50 ms
7,748 KB
testcase_20 AC 84 ms
10,916 KB
testcase_21 AC 98 ms
10,092 KB
testcase_22 AC 69 ms
11,984 KB
testcase_23 AC 64 ms
11,172 KB
testcase_24 AC 59 ms
10,400 KB
testcase_25 AC 497 ms
11,704 KB
testcase_26 AC 468 ms
11,708 KB
testcase_27 AC 63 ms
5,632 KB
testcase_28 AC 310 ms
14,284 KB
testcase_29 AC 131 ms
9,864 KB
testcase_30 AC 195 ms
11,128 KB
testcase_31 AC 189 ms
14,088 KB
testcase_32 AC 123 ms
12,656 KB
testcase_33 AC 100 ms
10,308 KB
testcase_34 AC 65 ms
6,380 KB
testcase_35 AC 41 ms
6,616 KB
testcase_36 AC 99 ms
8,460 KB
testcase_37 AC 249 ms
10,664 KB
testcase_38 AC 21 ms
4,380 KB
testcase_39 AC 37 ms
8,056 KB
testcase_40 AC 36 ms
8,068 KB
testcase_41 AC 37 ms
7,612 KB
testcase_42 AC 39 ms
7,560 KB
testcase_43 AC 86 ms
11,000 KB
testcase_44 AC 83 ms
10,912 KB
testcase_45 AC 81 ms
10,988 KB
testcase_46 AC 64 ms
9,600 KB
testcase_47 AC 81 ms
11,184 KB
testcase_48 AC 81 ms
10,936 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 #

//use proconio::input;
fn main() {
    let t = std::io::stdin();
    let mut read = snio::Reader::new(t.lock());
    let n = read.usize();
    let m = read.usize();
    let road_and_dist:Vec<(usize,usize,usize)> = (0..m).map(|_| (read.usize(),read.usize(), read.usize())).collect();
    let mut shojin = vec![Vec::new();n];
    for (s,t,u) in road_and_dist {
        shojin[s - 1].push((t - 1,u));
        shojin[t - 1].push((s - 1,u));

    }
    let t = binary_search(&shojin);
    println!("{} {}",t,dijkstra(&shojin,t,0));
}
fn binary_search(shojin:&Vec<Vec<(usize,usize)>>) -> usize {
    let (mut lb , mut ub) = (0,1e9 as usize + 1);
    while ub - lb > 1 {
        let mid = (ub + lb) / 2;
        if dijkstra(shojin,mid,0) != 1e18 as usize{
            lb = mid;
        } else {
            ub = mid;
        }
    }
    lb
}

use std::collections::BinaryHeap;
use std::cmp::Reverse;
fn dijkstra(shojin:& Vec<Vec<(usize,usize)>>,debu:usize,start:usize) -> usize{
    let mut pq = BinaryHeap::new();
    let mut dist = vec![1e18 as usize;shojin.len()];
    pq.push(Reverse((0,start)));
    dist[start] = 0;
    while let Some(v) = pq.pop() {
        let (cost,now) = v.0;
        for (to,c) in &shojin[now] {
            if dist[now] < cost || *c < debu{
                continue;
            }
            if dist[*to] > 1 + dist[now] {
                dist[*to] = dist[now] + 1;
                pq.push(Reverse((dist[*to],*to)));
            }
        }
    }
    //println!("{}",dist[shojin.len() - 1]);
    dist[shojin.len() - 1]
}

#[allow(dead_code)]
pub mod snio {
    pub struct Reader<R: std::io::BufRead> {
        reader: R,
        buf: std::collections::VecDeque<String>,
    }

    impl<R: std::io::BufRead> Reader<R> {
        pub fn new(reader: R) -> Self {
            Self {
                reader,
                buf: std::collections::VecDeque::new(),
            }
        }
        fn load(&mut self) {
            while self.buf.is_empty() {
                let mut s = String::new();
                let length = self.reader.read_line(&mut s).unwrap();
                if length == 0 {
                    break;
                }
                self.buf.extend(s.split_whitespace().map(|s| s.to_owned()));
            }
        }
        pub fn string(&mut self) -> String {
            self.load();
            self.buf.pop_front().unwrap_or_else(|| panic!("input ended"))
        }
        pub fn char(&mut self) -> char {
            let string = self.string();
            let mut chars = string.chars();
            let res = chars.next().unwrap();
            assert!(chars.next().is_none(), "invalid input!");
            res
        }
        pub fn chars(&mut self) -> Vec<char> {
            self.read::<String>().chars().collect()
        }
        pub fn read<T: std::str::FromStr>(&mut self) -> T
            where
                <T as ::std::str::FromStr>::Err: ::std::fmt::Debug,
        {
            self.string().parse::<T>().expect("Failed to parse the input.")
        }
    }
    macro_rules! definition_of_reader_of_numbers {
            ($($ty:tt,)*) => {
                impl <R:std::io::BufRead> Reader<R> {
                    $(
                    #[inline]
                    pub fn $ty (&mut self) -> $ty {
                        self.read::<$ty>()
                    }
                    )*
                }
            }
        }
    definition_of_reader_of_numbers! {
        u8,u16,u32,u64,usize,
        i8,i16,i32,i64,isize,
    }
}
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