結果
問題 | No.2387 Yokan Factory |
ユーザー | naut3 |
提出日時 | 2023-08-26 01:56:49 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 253 ms / 5,000 ms |
コード長 | 3,267 bytes |
コンパイル時間 | 19,938 ms |
コンパイル使用メモリ | 377,552 KB |
実行使用メモリ | 13,816 KB |
最終ジャッジ日時 | 2024-06-06 20:52:34 |
合計ジャッジ時間 | 16,281 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 0 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 147 ms
12,428 KB |
testcase_16 | AC | 70 ms
13,816 KB |
testcase_17 | AC | 249 ms
13,544 KB |
testcase_18 | AC | 128 ms
12,916 KB |
testcase_19 | AC | 177 ms
8,100 KB |
testcase_20 | AC | 126 ms
7,872 KB |
testcase_21 | AC | 253 ms
11,784 KB |
testcase_22 | AC | 120 ms
7,344 KB |
testcase_23 | AC | 183 ms
8,364 KB |
testcase_24 | AC | 65 ms
7,516 KB |
testcase_25 | AC | 15 ms
5,888 KB |
testcase_26 | AC | 29 ms
8,832 KB |
testcase_27 | AC | 37 ms
10,368 KB |
testcase_28 | AC | 1 ms
5,376 KB |
testcase_29 | AC | 2 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 1 ms
5,376 KB |
testcase_32 | AC | 1 ms
5,376 KB |
testcase_33 | AC | 2 ms
5,376 KB |
testcase_34 | AC | 2 ms
5,376 KB |
testcase_35 | AC | 1 ms
5,376 KB |
testcase_36 | AC | 1 ms
5,376 KB |
testcase_37 | AC | 1 ms
5,376 KB |
ソースコード
#![allow(non_snake_case, unused_imports, unused_must_use)] use std::cmp::Reverse; use std::io::{self, prelude::*}; use std::str; fn main() { let (stdin, stdout) = (io::stdin(), io::stdout()); let mut scan = Scanner::new(stdin.lock()); let mut out = io::BufWriter::new(stdout.lock()); macro_rules! input { ($T: ty) => { scan.token::<$T>() }; ($T: ty, $N: expr) => { (0..$N).map(|_| scan.token::<$T>()).collect::<Vec<_>>() }; } let (N, M, X) = (input!(usize), input!(usize), input!(usize)); let mut graph = vec![vec![]; N]; for _ in 0..M { let (u, v, a, b) = ( input!(usize) - 1, input!(usize) - 1, input!(usize), input!(usize), ); graph[u].push((v, a, b)); graph[v].push((u, a, b)); } // まず大きさを無視して運べるのかを判定したい const INF: usize = 1 << 60; let mut dist = vec![INF; N]; let mut seen = vec![false; N]; let mut hq = std::collections::BinaryHeap::new(); hq.push((Reverse(0), 0)); dist[0] = 0; while let Some((_, now)) = hq.pop() { if seen[now] { continue; } for &(nxt, a, _) in graph[now].iter() { if dist[nxt] > dist[now] + a { dist[nxt] = dist[now] + a; hq.push((Reverse(dist[nxt]), nxt)); } } seen[now] = true; } if dist[N - 1] > X { writeln!(out, "-1"); return; } // 適当に最大値を求める let mut ok = 0; let mut ng = 1 << 30; while ng - ok > 1 { let m = (ok + ng) / 2; let mut dist = vec![INF; N]; let mut seen = vec![false; N]; let mut hq = std::collections::BinaryHeap::new(); hq.push((Reverse(0), 0)); dist[0] = 0; while let Some((_, now)) = hq.pop() { if seen[now] { continue; } for &(nxt, a, b) in graph[now].iter() { if dist[nxt] > dist[now] + a && b >= m { dist[nxt] = dist[now] + a; hq.push((Reverse(dist[nxt]), nxt)); } } seen[now] = true; } if dist[N - 1] <= X { ok = m; } else { ng = m; } } writeln!(out, "{}", ok); } struct Scanner<R> { reader: R, buf_str: Vec<u8>, buf_iter: str::SplitWhitespace<'static>, } impl<R: BufRead> Scanner<R> { fn new(reader: R) -> Self { Self { reader, buf_str: vec![], buf_iter: "".split_whitespace(), } } fn token<T: str::FromStr>(&mut self) -> T { loop { if let Some(token) = self.buf_iter.next() { return token.parse().ok().expect("Failed parse"); } self.buf_str.clear(); self.reader .read_until(b'\n', &mut self.buf_str) .expect("Failed read"); self.buf_iter = unsafe { let slice = str::from_utf8_unchecked(&self.buf_str); std::mem::transmute(slice.split_whitespace()) } } } }