結果
問題 | No.1843 Tree ANDistance |
ユーザー | akakimidori |
提出日時 | 2022-02-18 21:44:39 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 77 ms / 2,000 ms |
コード長 | 3,808 bytes |
コンパイル時間 | 12,968 ms |
コンパイル使用メモリ | 377,720 KB |
実行使用メモリ | 6,784 KB |
最終ジャッジ日時 | 2024-06-29 08:35:44 |
合計ジャッジ時間 | 15,958 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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 | 74 ms
6,784 KB |
testcase_01 | AC | 74 ms
6,656 KB |
testcase_02 | AC | 69 ms
6,784 KB |
testcase_03 | AC | 69 ms
6,784 KB |
testcase_04 | AC | 74 ms
6,784 KB |
testcase_05 | AC | 65 ms
6,784 KB |
testcase_06 | AC | 77 ms
6,784 KB |
testcase_07 | AC | 70 ms
6,528 KB |
testcase_08 | AC | 71 ms
6,656 KB |
testcase_09 | AC | 65 ms
6,400 KB |
testcase_10 | AC | 64 ms
6,400 KB |
testcase_11 | AC | 74 ms
6,784 KB |
testcase_12 | AC | 61 ms
6,400 KB |
testcase_13 | AC | 72 ms
6,400 KB |
testcase_14 | AC | 3 ms
5,376 KB |
testcase_15 | AC | 3 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 3 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 1 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | AC | 1 ms
5,376 KB |
testcase_24 | AC | 1 ms
5,376 KB |
testcase_25 | AC | 1 ms
5,376 KB |
testcase_26 | AC | 1 ms
5,376 KB |
testcase_27 | AC | 1 ms
5,376 KB |
testcase_28 | AC | 24 ms
5,376 KB |
testcase_29 | AC | 17 ms
5,376 KB |
testcase_30 | AC | 16 ms
5,376 KB |
testcase_31 | AC | 26 ms
5,376 KB |
testcase_32 | AC | 25 ms
5,376 KB |
testcase_33 | AC | 8 ms
5,376 KB |
testcase_34 | AC | 20 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 |
コンパイルメッセージ
warning: unused import: `std::io::Write` --> src/main.rs:114:5 | 114 | use std::io::Write; | ^^^^^^^^^^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: type alias `Map` is never used --> src/main.rs:117:6 | 117 | type Map<K, V> = BTreeMap<K, V>; | ^^^ | = note: `#[warn(dead_code)]` on by default warning: type alias `Set` is never used --> src/main.rs:118:6 | 118 | type Set<T> = BTreeSet<T>; | ^^^ warning: type alias `Deque` is never used --> src/main.rs:119:6 | 119 | type Deque<T> = VecDeque<T>; | ^^^^^
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 ---------- use std::io::Write; use std::collections::*; type Map<K, V> = BTreeMap<K, V>; type Set<T> = BTreeSet<T>; type Deque<T> = VecDeque<T>; fn run() { input! { n: usize, e: [(usize1, usize1, usize); n - 1], } const MOD: usize = 1_000_000_007; let mut ans = 0; for k in 0..30 { let mut dsu = DSU::new(n); for &(a, b, c) in e.iter() { if c >> k & 1 == 1 { dsu.unite(a, b); } } for i in 0..n { if i == dsu.root(i) { let size = dsu.size(i); ans += size * (size - 1) / 2 * (1 << k); ans %= MOD; } } } println!("{}", ans); } fn main() { run(); }