結果
問題 | No.2354 Poor Sight in Winter |
ユーザー | haihamabossu |
提出日時 | 2023-06-16 22:29:49 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 50 ms / 2,000 ms |
コード長 | 3,018 bytes |
コンパイル時間 | 13,756 ms |
コンパイル使用メモリ | 391,252 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-24 15:05:58 |
合計ジャッジ時間 | 13,862 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
6,812 KB |
testcase_01 | AC | 1 ms
6,812 KB |
testcase_02 | AC | 1 ms
6,816 KB |
testcase_03 | AC | 1 ms
6,944 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 1 ms
6,940 KB |
testcase_06 | AC | 1 ms
6,944 KB |
testcase_07 | AC | 1 ms
6,944 KB |
testcase_08 | AC | 1 ms
6,940 KB |
testcase_09 | AC | 1 ms
6,944 KB |
testcase_10 | AC | 1 ms
6,944 KB |
testcase_11 | AC | 39 ms
6,944 KB |
testcase_12 | AC | 42 ms
6,944 KB |
testcase_13 | AC | 50 ms
6,940 KB |
testcase_14 | AC | 49 ms
6,940 KB |
testcase_15 | AC | 43 ms
6,940 KB |
testcase_16 | AC | 44 ms
6,944 KB |
testcase_17 | AC | 47 ms
6,944 KB |
testcase_18 | AC | 15 ms
6,940 KB |
testcase_19 | AC | 32 ms
6,944 KB |
testcase_20 | AC | 19 ms
6,944 KB |
testcase_21 | AC | 2 ms
6,944 KB |
testcase_22 | AC | 9 ms
6,940 KB |
testcase_23 | AC | 10 ms
6,940 KB |
testcase_24 | AC | 26 ms
6,944 KB |
testcase_25 | AC | 6 ms
6,944 KB |
testcase_26 | AC | 5 ms
6,940 KB |
testcase_27 | AC | 1 ms
6,940 KB |
testcase_28 | AC | 2 ms
6,940 KB |
ソースコード
pub mod binary_search { type T = usize; pub fn binary_search(mut ok: T, mut ng: T, f: impl Fn(T) -> bool) -> T { let cont = |ok: T, ng: T| { let l = ok.min(ng); let r = ok.max(ng); l + 1 < r }; while cont(ok, ng) { let x = (ok + ng) / 2; if f(x) { ok = x; } else { ng = x; } } ok } } pub mod scanner { pub struct Scanner { buf: Vec<String>, } impl Scanner { pub fn new() -> Self { Self { buf: vec![] } } pub fn new_from(source: &str) -> Self { let source = String::from(source); let buf = Self::split(source); Self { buf } } pub fn next<T: std::str::FromStr>(&mut self) -> T { loop { if let Some(x) = self.buf.pop() { return x.parse().ok().expect(""); } let mut source = String::new(); std::io::stdin().read_line(&mut source).expect(""); self.buf = Self::split(source); } } fn split(source: String) -> Vec<String> { source .split_whitespace() .rev() .map(String::from) .collect::<Vec<_>>() } } } use crate::{binary_search::binary_search, scanner::Scanner}; fn main() { let mut scanner = Scanner::new(); let t: usize = 1; for _ in 0..t { solve(&mut scanner); } } fn shortest_path(n: usize, p: usize, xy: &Vec<(usize, usize)>) -> usize { use std::cmp::Reverse; let mut que = std::collections::BinaryHeap::<Reverse<(usize, usize)>>::new(); let mut dist = vec![None; n]; let from = 0; que.push(Reverse((0, from))); dist[from] = Some(0); while let Some(Reverse((d, u))) = que.pop() { if let Some(now_d) = dist[u] { if now_d < d { continue; } } for v in 0..n { if u == v { continue; } let (ux, uy) = xy[u]; let (vx, vy) = xy[v]; let dx = ux.max(vx) - ux.min(vx); let dy = uy.max(vy) - uy.min(vy); let next_d = d + (dx + dy + p - 1) / p - 1; if let Some(now_d) = dist[v] { if now_d <= next_d { continue; } } que.push(Reverse((next_d, v))); dist[v] = Some(next_d); } } dist[1].unwrap() } fn solve(scanner: &mut Scanner) { let n: usize = scanner.next(); let k: usize = scanner.next(); let n = n + 2; let mut xy = vec![(0, 0); n]; for i in 0..n { let x = scanner.next::<usize>(); let y = scanner.next::<usize>(); xy[i] = (x, y); } let ans = binary_search(200000, 0, |p| shortest_path(n, p, &xy) <= k); println!("{}", ans); }