結果

問題 No.2387 Yokan Factory
ユーザー koba-e964koba-e964
提出日時 2023-07-22 02:19:17
言語 Rust
(1.77.0)
結果
AC  
実行時間 763 ms / 5,000 ms
コード長 3,250 bytes
コンパイル時間 4,987 ms
コンパイル使用メモリ 190,896 KB
実行使用メモリ 13,948 KB
最終ジャッジ日時 2023-10-22 01:57:16
合計ジャッジ時間 12,165 ms
ジャッジサーバーID
（参考情報） 		judge15 / judge12
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
4,348 KB
testcase_01 AC 1 ms
4,348 KB
testcase_02 AC 1 ms
4,348 KB
testcase_03 AC 1 ms
4,348 KB
testcase_04 AC 1 ms
4,348 KB
testcase_05 AC 1 ms
4,348 KB
testcase_06 AC 1 ms
4,348 KB
testcase_07 AC 1 ms
4,348 KB
testcase_08 AC 1 ms
4,348 KB
testcase_09 AC 1 ms
4,348 KB
testcase_10 AC 1 ms
4,348 KB
testcase_11 AC 1 ms
4,348 KB
testcase_12 AC 1 ms
4,348 KB
testcase_13 AC 1 ms
4,348 KB
testcase_14 AC 1 ms
4,348 KB
testcase_15 AC 374 ms
11,308 KB
testcase_16 AC 244 ms
11,836 KB
testcase_17 AC 730 ms
13,948 KB
testcase_18 AC 417 ms
11,760 KB
testcase_19 AC 489 ms
8,168 KB
testcase_20 AC 307 ms
6,404 KB
testcase_21 AC 640 ms
10,828 KB
testcase_22 AC 297 ms
6,244 KB
testcase_23 AC 530 ms
8,324 KB
testcase_24 AC 292 ms
7,408 KB
testcase_25 AC 307 ms
5,200 KB
testcase_26 AC 710 ms
9,176 KB
testcase_27 AC 763 ms
10,212 KB
testcase_28 AC 2 ms
4,348 KB
testcase_29 AC 4 ms
4,348 KB
testcase_30 AC 4 ms
4,348 KB
testcase_31 AC 3 ms
4,348 KB
testcase_32 AC 3 ms
4,348 KB
testcase_33 AC 2 ms
4,348 KB
testcase_34 AC 5 ms
4,348 KB
testcase_35 AC 4 ms
4,348 KB
testcase_36 AC 2 ms
4,348 KB
testcase_37 AC 1 ms
4,348 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
warning: unused macro definition: `puts`
  --> Main.rs:62:18
   |
62 |     macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););}
   |                  ^^^^
   |
   = note: `#[warn(unused_macros)]` on by default

warning: unused import: `Write`
 --> Main.rs:5:15
  |
5 | use std::io::{Write, BufWriter};
  |               ^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: unused variable: `out`
  --> Main.rs:61:13
   |
61 |     let mut out = BufWriter::new(out.lock());
   |             ^^^ help: if this is intentional, prefix it with an underscore: `_out`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: variable does not need to be mutable
  --> Main.rs:61:9
   |
61 |     let mut out = BufWriter::new(out.lock());
   |         ----^^^
   |         |
   |         help: remove this `mut`
   |
   = note: `#[warn(unused_mut)]` on by default

warning: 4 warnings emitted

ソースコード

diff # 

#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;
use std::io::{Write, BufWriter};
// https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
macro_rules! input {
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes.by_ref().map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}

macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr,) => {};
    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => { ($(read_value!($next, $t)),*) };
    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };
    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };
    ($next:expr, usize1) => (read_value!($next, usize) - 1);
    ($next:expr, [ $t:tt ]) => {{
        let len = read_value!($next, usize);
        read_value!($next, [$t; len])
    }};
    ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error"));
}

trait Change { fn chmax(&mut self, x: Self); fn chmin(&mut self, x: Self); }
impl<T: PartialOrd> Change for T {
    fn chmax(&mut self, x: T) { if *self < x { *self = x; } }
    fn chmin(&mut self, x: T) { if *self > x { *self = x; } }
}

fn main() {
    // In order to avoid potential stack overflow, spawn a new thread.
    let stack_size = 104_857_600; // 100 MB
    let thd = std::thread::Builder::new().stack_size(stack_size);
    thd.spawn(|| solve()).unwrap().join().unwrap();
}

fn solve() {
    let out = std::io::stdout();
    let mut out = BufWriter::new(out.lock());
    macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););}
    #[allow(unused)]
    macro_rules! putvec {
        ($v:expr) => {
            for i in 0..$v.len() {
                puts!("{}{}", $v[i], if i + 1 == $v.len() {"\n"} else {" "});
            }
        }
    }
    input! {
        n: usize, m: usize, x: i64,
        uvab: [(usize1, usize1, i64, i64); m],
    }
    let mut pass = -1;
    let mut fail = 1 << 30;
    while fail - pass > 1 {
        let mid = (fail + pass) / 2;
        let mut g = vec![vec![]; n];
        for &(u, v, a, b) in &uvab {
            if b >= mid {
                g[u].push((v, a));
                g[v].push((u, a));
            }
        }
        const INF: i64 = 1 << 60;
        let mut dist = vec![INF; n];
        let mut que = BinaryHeap::new();
        que.push((Reverse(0), 0));
        while let Some((Reverse(d), v)) = que.pop() {
            if dist[v] <= d {
                continue;
            }
            dist[v] = d;
            for &(w, c) in &g[v] {
                que.push((Reverse(d + c), w));
            }
        }
        if dist[n - 1] <= x {
            pass = mid;
        } else {
            fail = mid;
        }
    }
    println!("{}", pass);
}
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