結果
問題 | No.1640 簡単な色塗り |
ユーザー | koba-e964 |
提出日時 | 2021-08-06 23:08:41 |
言語 | Rust (1.77.0) |
結果 |
AC
|
実行時間 | 1,281 ms / 2,000 ms |
コード長 | 4,612 bytes |
コンパイル時間 | 5,151 ms |
コンパイル使用メモリ | 173,144 KB |
実行使用メモリ | 41,152 KB |
最終ジャッジ日時 | 2023-09-12 03:12:27 |
合計ジャッジ時間 | 32,882 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge12 |
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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
4,384 KB |
testcase_01 | AC | 1 ms
4,376 KB |
testcase_02 | AC | 1 ms
4,380 KB |
testcase_03 | AC | 1 ms
4,380 KB |
testcase_04 | AC | 801 ms
30,736 KB |
testcase_05 | AC | 1,281 ms
41,152 KB |
testcase_06 | AC | 1 ms
4,376 KB |
testcase_07 | AC | 1 ms
4,380 KB |
testcase_08 | AC | 1 ms
4,380 KB |
testcase_09 | AC | 1 ms
4,380 KB |
testcase_10 | AC | 562 ms
18,936 KB |
testcase_11 | AC | 457 ms
15,636 KB |
testcase_12 | AC | 395 ms
14,100 KB |
testcase_13 | AC | 887 ms
28,184 KB |
testcase_14 | AC | 897 ms
28,088 KB |
testcase_15 | AC | 287 ms
10,628 KB |
testcase_16 | AC | 347 ms
12,480 KB |
testcase_17 | AC | 716 ms
23,680 KB |
testcase_18 | AC | 59 ms
4,380 KB |
testcase_19 | AC | 405 ms
13,744 KB |
testcase_20 | AC | 551 ms
18,460 KB |
testcase_21 | AC | 440 ms
15,164 KB |
testcase_22 | AC | 41 ms
4,380 KB |
testcase_23 | AC | 595 ms
19,748 KB |
testcase_24 | AC | 155 ms
6,308 KB |
testcase_25 | AC | 413 ms
14,252 KB |
testcase_26 | AC | 655 ms
21,488 KB |
testcase_27 | AC | 273 ms
10,100 KB |
testcase_28 | AC | 846 ms
27,004 KB |
testcase_29 | AC | 638 ms
21,324 KB |
testcase_30 | AC | 16 ms
5,004 KB |
testcase_31 | AC | 156 ms
27,712 KB |
testcase_32 | AC | 131 ms
24,388 KB |
testcase_33 | AC | 81 ms
16,924 KB |
testcase_34 | AC | 107 ms
20,780 KB |
testcase_35 | AC | 82 ms
16,896 KB |
testcase_36 | AC | 16 ms
5,096 KB |
testcase_37 | AC | 22 ms
6,728 KB |
testcase_38 | AC | 140 ms
25,292 KB |
testcase_39 | AC | 50 ms
11,592 KB |
testcase_40 | AC | 51 ms
11,824 KB |
testcase_41 | AC | 116 ms
21,452 KB |
testcase_42 | AC | 60 ms
13,284 KB |
testcase_43 | AC | 64 ms
13,724 KB |
testcase_44 | AC | 61 ms
13,376 KB |
testcase_45 | AC | 44 ms
10,392 KB |
testcase_46 | AC | 19 ms
5,664 KB |
testcase_47 | AC | 12 ms
4,380 KB |
testcase_48 | AC | 147 ms
25,812 KB |
testcase_49 | AC | 6 ms
4,376 KB |
testcase_50 | AC | 1 ms
4,380 KB |
testcase_51 | AC | 1 ms
4,380 KB |
testcase_52 | AC | 987 ms
34,272 KB |
testcase_53 | AC | 979 ms
35,072 KB |
07_evil_01.txt | TLE | - |
07_evil_02.txt | TLE | - |
ソースコード
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, usize1) => (read_value!($next, usize) - 1); ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error")); } /** * Union-Find tree. * Verified by https://atcoder.jp/contests/pakencamp-2019-day3/submissions/9253305 */ struct UnionFind { disj: Vec<usize>, rank: Vec<usize> } impl UnionFind { fn new(n: usize) -> Self { let disj = (0..n).collect(); UnionFind { disj: disj, rank: vec![1; n] } } fn root(&mut self, x: usize) -> usize { if x != self.disj[x] { let par = self.disj[x]; let r = self.root(par); self.disj[x] = r; } self.disj[x] } fn unite(&mut self, x: usize, y: usize) { let mut x = self.root(x); let mut y = self.root(y); if x == y { return } if self.rank[x] > self.rank[y] { std::mem::swap(&mut x, &mut y); } self.disj[x] = y; self.rank[y] += self.rank[x]; } #[allow(unused)] fn is_same_set(&mut self, x: usize, y: usize) -> bool { self.root(x) == self.root(y) } #[allow(unused)] fn size(&mut self, x: usize) -> usize { let x = self.root(x); self.rank[x] } } fn main() { // In order to avoid potential stack overflow, spawn a new thread. let stack_size = 104_857_600; // 100 MB let thd = std::thread::Builder::new().stack_size(stack_size); thd.spawn(|| solve()).unwrap().join().unwrap(); } // Given a cycle, finds one of its hamiltonian paths. fn dfs(v: usize, par: usize, eidx: usize, g: &[HashMap<usize, usize>], vis: &mut [bool], einfo: &mut [usize]) { let n = g.len(); if par < n && einfo[eidx] >= n { einfo[eidx] = par; } if vis[v] { return; } vis[v] = true; for (&widx, &w) in &g[v] { if widx == eidx { continue; } dfs(w, v, widx, g, vis, einfo); } } // Tags: namori-graph, namori-forest, sat-on-graphs fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););} input! { n: usize, ab: [(usize1, usize1); n], } let mut g = vec![vec![]; n]; let mut gr = vec![HashMap::new(); n]; let mut uf = UnionFind::new(n); for i in 0..n { let (a, b) = ab[i]; g[a].push((b, i)); g[b].push((a, i)); gr[a].insert(i, b); gr[b].insert(i, a); uf.unite(a, b); } let mut es = vec![0; n]; for i in 0..n { let (a, _) = ab[i]; es[uf.root(a)] += 1; } for i in 0..n { if uf.root(i) == i && uf.size(i) != es[i] { puts!("No\n"); return; } } puts!("Yes\n"); let mut deg = vec![0; n]; for i in 0..n { deg[i] = g[i].len(); } let mut que = vec![]; for i in 0..n { if deg[i] == 1 { let (&idx, &to) = gr[i].iter().next().unwrap(); que.push((i, idx, to)); } } let mut einfo = vec![1 << 20; n]; while let Some((v, idx, w)) = que.pop() { einfo[idx] = v; deg[v] -= 1; gr[w].remove(&idx); deg[w] -= 1; if deg[w] == 1 { let (&idx, &to) = gr[w].iter().next().unwrap(); que.push((w, idx, to)); } } eprintln!("gr = {:?}", gr); let mut vis = vec![false; n]; for i in 0..n { if !vis[i] { dfs(i, n, n, &gr, &mut vis, &mut einfo); } } for i in 0..n { puts!("{}\n", einfo[i] + 1); } }