結果
問題 | No.1647 Travel in Mitaru city 2 |
ユーザー | akakimidori |
提出日時 | 2021-08-13 21:44:25 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 70 ms / 2,500 ms |
コード長 | 4,883 bytes |
コンパイル時間 | 12,384 ms |
コンパイル使用メモリ | 405,552 KB |
実行使用メモリ | 29,952 KB |
最終ジャッジ日時 | 2024-10-13 03:13:50 |
合計ジャッジ時間 | 18,141 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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
5,248 KB |
testcase_02 | AC | 1 ms
5,248 KB |
testcase_03 | AC | 1 ms
5,248 KB |
testcase_04 | AC | 1 ms
5,248 KB |
testcase_05 | AC | 1 ms
5,248 KB |
testcase_06 | AC | 1 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 64 ms
27,904 KB |
testcase_09 | AC | 61 ms
25,856 KB |
testcase_10 | AC | 68 ms
27,776 KB |
testcase_11 | AC | 52 ms
22,356 KB |
testcase_12 | AC | 68 ms
23,936 KB |
testcase_13 | AC | 43 ms
21,632 KB |
testcase_14 | AC | 64 ms
28,544 KB |
testcase_15 | AC | 62 ms
28,232 KB |
testcase_16 | AC | 60 ms
26,880 KB |
testcase_17 | AC | 50 ms
21,888 KB |
testcase_18 | AC | 51 ms
23,040 KB |
testcase_19 | AC | 53 ms
23,636 KB |
testcase_20 | AC | 54 ms
24,064 KB |
testcase_21 | AC | 47 ms
24,320 KB |
testcase_22 | AC | 61 ms
29,312 KB |
testcase_23 | AC | 64 ms
29,048 KB |
testcase_24 | AC | 58 ms
25,856 KB |
testcase_25 | AC | 59 ms
27,392 KB |
testcase_26 | AC | 67 ms
29,052 KB |
testcase_27 | AC | 69 ms
29,556 KB |
testcase_28 | AC | 70 ms
29,952 KB |
testcase_29 | AC | 61 ms
29,696 KB |
testcase_30 | AC | 43 ms
23,580 KB |
testcase_31 | AC | 63 ms
29,548 KB |
testcase_32 | AC | 62 ms
27,252 KB |
testcase_33 | AC | 56 ms
26,496 KB |
testcase_34 | AC | 69 ms
29,824 KB |
testcase_35 | AC | 53 ms
24,168 KB |
testcase_36 | AC | 70 ms
29,440 KB |
testcase_37 | AC | 67 ms
29,952 KB |
testcase_38 | AC | 61 ms
26,784 KB |
testcase_39 | AC | 50 ms
24,244 KB |
testcase_40 | AC | 58 ms
26,728 KB |
testcase_41 | AC | 52 ms
25,228 KB |
testcase_42 | AC | 55 ms
26,752 KB |
testcase_43 | AC | 1 ms
5,248 KB |
testcase_44 | AC | 5 ms
10,496 KB |
testcase_45 | AC | 28 ms
19,692 KB |
testcase_46 | AC | 47 ms
19,968 KB |
testcase_47 | AC | 45 ms
23,808 KB |
testcase_48 | AC | 34 ms
19,712 KB |
testcase_49 | AC | 43 ms
23,296 KB |
testcase_50 | AC | 37 ms
21,128 KB |
ソースコード
//---------- begin union_find ---------- pub struct DSU { p: Vec<i32>, } impl DSU { pub fn new(n: usize) -> DSU { assert!(n < std::i32::MAX as usize); DSU { p: vec![-1; n] } } pub fn init(&mut self) { self.p.iter_mut().for_each(|p| *p = -1); } pub fn root(&self, mut x: usize) -> usize { assert!(x < self.p.len()); while self.p[x] >= 0 { x = self.p[x] as usize; } x } pub fn same(&self, x: usize, y: usize) -> bool { assert!(x < self.p.len() && y < self.p.len()); self.root(x) == self.root(y) } pub fn unite(&mut self, x: usize, y: usize) -> Option<(usize, usize)> { assert!(x < self.p.len() && y < self.p.len()); let mut x = self.root(x); let mut y = self.root(y); if x == y { return None; } if self.p[x] > self.p[y] { std::mem::swap(&mut x, &mut y); } self.p[x] += self.p[y]; self.p[y] = x as i32; Some((x, y)) } pub fn parent(&self, x: usize) -> Option<usize> { assert!(x < self.p.len()); let p = self.p[x]; if p >= 0 { Some(p as usize) } else { None } } pub fn sum<F>(&self, mut x: usize, mut f: F) -> usize where F: FnMut(usize), { while let Some(p) = self.parent(x) { f(x); x = p; } x } pub fn size(&self, x: usize) -> usize { assert!(x < self.p.len()); let r = self.root(x); (-self.p[r]) as usize } } //---------- end union_find ---------- // ---------- begin input macro ---------- // reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { (source = $s:expr, $($r:tt)*) => { let mut iter = $s.split_whitespace(); input_inner!{iter, $($r)*} }; ($($r:tt)*) => { let s = { use std::io::Read; let mut s = String::new(); std::io::stdin().read_to_string(&mut s).unwrap(); s }; let mut iter = s.split_whitespace(); input_inner!{iter, $($r)*} }; } macro_rules! input_inner { ($iter:expr) => {}; ($iter:expr, ) => {}; ($iter:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($iter, $t); input_inner!{$iter $($r)*} }; } macro_rules! read_value { ($iter:expr, ( $($t:tt),* )) => { ( $(read_value!($iter, $t)),* ) }; ($iter:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>() }; ($iter:expr, chars) => { read_value!($iter, String).chars().collect::<Vec<char>>() }; ($iter:expr, bytes) => { read_value!($iter, String).bytes().collect::<Vec<u8>>() }; ($iter:expr, usize1) => { read_value!($iter, usize) - 1 }; ($iter:expr, $t:ty) => { $iter.next().unwrap().parse::<$t>().expect("Parse error") }; } // ---------- end input macro ---------- fn run() { input! { h: usize, w: usize, n: usize, e: [(usize1, usize1); n], } let mut dsu = DSU::new(h + w); let mut g = vec![vec![]; h + w]; for (i, &(a, b)) in e.iter().enumerate() { let b = b + h; if dsu.unite(a, b).is_some() { g[a].push((b, i)); g[b].push((a, i)); } else { let root = dsu.root(a); let mut topo = vec![root]; let mut depth = vec![0; h + w]; let mut parent = vec![(root, n); h + w]; for i in 0.. { if i >= topo.len() { break; } let v = topo[i]; for &(u, k) in g[v].iter() { if u != parent[v].0 { parent[u] = (v, k); depth[u] = depth[v] + 1; topo.push(u); } } } let mut a = a; let mut b = b; let mut x = vec![]; let mut y = vec![]; while a != b { if depth[a] >= depth[b] { let (p, k) = parent[a]; x.push(k); a = p; } else { let (p, k) = parent[b]; y.push(k); b = p; } } x.extend(y.iter().rev().cloned()); x.push(i); if e[x[0]].1 != e[x[1]].1 { x.rotate_left(1); } let s = x.iter().map(|x| (*x + 1).to_string()).collect::<Vec<_>>().join(" "); println!("{}", x.len()); println!("{}", s); return; } } println!("-1"); } fn main() { run(); }