結果
問題 | No.977 アリス仕掛けの摩天楼 |
ユーザー | fukafukatani |
提出日時 | 2020-01-31 21:41:54 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 30 ms / 2,000 ms |
コード長 | 2,698 bytes |
コンパイル時間 | 15,299 ms |
コンパイル使用メモリ | 400,732 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-09-17 07:30:18 |
合計ジャッジ時間 | 14,995 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 0 ms
5,248 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 | 1 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 | 0 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 4 ms
5,376 KB |
testcase_14 | AC | 4 ms
5,376 KB |
testcase_15 | AC | 3 ms
5,376 KB |
testcase_16 | AC | 3 ms
5,376 KB |
testcase_17 | AC | 4 ms
5,376 KB |
testcase_18 | AC | 8 ms
5,376 KB |
testcase_19 | AC | 9 ms
5,376 KB |
testcase_20 | AC | 13 ms
5,376 KB |
testcase_21 | AC | 23 ms
5,376 KB |
testcase_22 | AC | 30 ms
5,376 KB |
testcase_23 | AC | 29 ms
5,376 KB |
testcase_24 | AC | 30 ms
5,376 KB |
testcase_25 | AC | 30 ms
5,376 KB |
コンパイルメッセージ
warning: unused variable: `i` --> src/main.rs:22:9 | 22 | for i in 0..n - 1 { | ^ help: if this is intentional, prefix it with an underscore: `_i` | = note: `#[warn(unused_variables)]` on by default warning: methods `same` and `get_size` are never used --> src/main.rs:78:8 | 59 | impl UnionFindTree { | ------------------ methods in this implementation ... 78 | fn same(&mut self, x: usize, y: usize) -> bool { | ^^^^ ... 82 | fn get_size(&mut self, x: usize) -> usize { | ^^^^^^^^ | = note: `#[warn(dead_code)]` on by default
ソースコード
#![allow(unused_imports)] #![allow(non_snake_case)] use std::cmp::*; use std::collections::*; use std::io::Write; #[allow(unused_macros)] macro_rules! debug { ($($e:expr),*) => { #[cfg(debug_assertions)] $({ let (e, mut err) = (stringify!($e), std::io::stderr()); writeln!(err, "{} = {:?}", e, $e).unwrap() })* }; } fn main() { let n = read::<usize>(); let mut uft = UnionFindTree::new(n); let mut count = vec![0; n]; for i in 0..n - 1 { let v = read_vec::<usize>(); let (u, v) = (v[0], v[1]); uft.unite(u, v); count[u] += 1; count[v] += 1; } let elem = (0..n).map(|x| uft.find(x)).collect::<HashSet<_>>().len(); let count_one = count.into_iter().any(|num| num == 1); if elem > 2 || (elem == 2 && count_one) { println!("Alice"); } else { println!("Bob"); } } fn read<T: std::str::FromStr>() -> T { let mut s = String::new(); std::io::stdin().read_line(&mut s).ok(); s.trim().parse().ok().unwrap() } fn read_vec<T: std::str::FromStr>() -> Vec<T> { read::<String>() .split_whitespace() .map(|e| e.parse().ok().unwrap()) .collect() } #[derive(Debug, Clone)] struct UnionFindTree { parent: Vec<isize>, size: Vec<usize>, height: Vec<u64>, } impl UnionFindTree { fn new(n: usize) -> UnionFindTree { UnionFindTree { parent: vec![-1; n], size: vec![1usize; n], height: vec![0u64; n], } } fn find(&mut self, index: usize) -> usize { if self.parent[index] == -1 { return index; } let idx = self.parent[index] as usize; let ret = self.find(idx); self.parent[index] = ret as isize; ret } fn same(&mut self, x: usize, y: usize) -> bool { self.find(x) == self.find(y) } fn get_size(&mut self, x: usize) -> usize { let idx = self.find(x); self.size[idx] } fn unite(&mut self, index0: usize, index1: usize) -> bool { let a = self.find(index0); let b = self.find(index1); if a == b { false } else { if self.height[a] > self.height[b] { self.parent[b] = a as isize; self.size[a] += self.size[b]; } else if self.height[a] < self.height[b] { self.parent[a] = b as isize; self.size[b] += self.size[a]; } else { self.parent[b] = a as isize; self.size[a] += self.size[b]; self.height[a] += 1; } true } } }