結果
問題 | No.1054 Union add query |
ユーザー | kaki |
提出日時 | 2020-05-16 14:34:55 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 482 ms / 2,000 ms |
コード長 | 4,226 bytes |
コンパイル時間 | 13,737 ms |
コンパイル使用メモリ | 400,436 KB |
実行使用メモリ | 9,736 KB |
最終ジャッジ日時 | 2024-09-22 08:26:21 |
合計ジャッジ時間 | 16,614 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 1 ms
6,812 KB |
testcase_01 | AC | 1 ms
6,816 KB |
testcase_02 | AC | 1 ms
6,940 KB |
testcase_03 | AC | 364 ms
6,940 KB |
testcase_04 | AC | 412 ms
9,736 KB |
testcase_05 | AC | 342 ms
6,944 KB |
testcase_06 | AC | 321 ms
6,940 KB |
testcase_07 | AC | 290 ms
6,940 KB |
testcase_08 | AC | 222 ms
6,940 KB |
testcase_09 | AC | 482 ms
9,712 KB |
testcase_10 | AC | 87 ms
6,940 KB |
ソースコード
#![allow(non_snake_case)] #![allow(dead_code)] #![allow(unused_macros)] #![allow(unused_imports)] use std::str::FromStr; use std::io::*; use std::collections::*; use std::cmp::*; struct Scanner<I: Iterator<Item = char>> { iter: std::iter::Peekable<I>, } macro_rules! exit { () => {{ exit!(0) }}; ($code:expr) => {{ if cfg!(local) { writeln!(std::io::stderr(), "===== Terminated =====") .expect("failed printing to stderr"); } std::process::exit($code); }} } impl<I: Iterator<Item = char>> Scanner<I> { pub fn new(iter: I) -> Scanner<I> { Scanner { iter: iter.peekable(), } } pub fn safe_get_token(&mut self) -> Option<String> { let token = self.iter .by_ref() .skip_while(|c| c.is_whitespace()) .take_while(|c| !c.is_whitespace()) .collect::<String>(); if token.is_empty() { None } else { Some(token) } } pub fn token(&mut self) -> String { self.safe_get_token().unwrap_or_else(|| exit!()) } pub fn get<T: FromStr>(&mut self) -> T { self.token().parse::<T>().unwrap_or_else(|_| exit!()) } pub fn vec<T: FromStr>(&mut self, len: usize) -> Vec<T> { (0..len).map(|_| self.get()).collect() } pub fn mat<T: FromStr>(&mut self, row: usize, col: usize) -> Vec<Vec<T>> { (0..row).map(|_| self.vec(col)).collect() } pub fn char(&mut self) -> char { self.iter.next().unwrap_or_else(|| exit!()) } pub fn chars(&mut self) -> Vec<char> { self.get::<String>().chars().collect() } pub fn mat_chars(&mut self, row: usize) -> Vec<Vec<char>> { (0..row).map(|_| self.chars()).collect() } pub fn line(&mut self) -> String { if self.peek().is_some() { self.iter .by_ref() .take_while(|&c| !(c == '\n' || c == '\r')) .collect::<String>() } else { exit!(); } } pub fn peek(&mut self) -> Option<&char> { self.iter.peek() } } use std::mem::swap; struct UnionFind { parents: Vec<i64>, val: Vec<i64>, } impl UnionFind { fn new(n: usize) -> Self { UnionFind { parents: vec![-1; n], val: vec![0; n], } } fn unite(&mut self, x: usize, y: usize) { let mut px = self.root(x); let mut py = self.root(y); if px == py { return; } if -self.parents[px] < -self.parents[py] { swap(&mut px, &mut py); } self.parents[px] += self.parents[py]; self.parents[py] = px as i64; self.val[py] -= self.val[px]; } fn root(&mut self, x: usize) -> usize { let px = self.parents[x]; if px < 0 { return x; } self.root(px as usize) } fn add(&mut self, x: usize, v: i64) { let rx = self.root(x); self.val[rx] += v; } fn query(&self, x: usize) -> i64 { let mut ret = 0; let mut cur = x as i64; while self.parents[cur as usize] >= 0 { ret += self.val[cur as usize]; cur = self.parents[cur as usize]; } ret += self.val[cur as usize]; ret } } fn main() { let cin = stdin(); let cin = cin.lock(); let mut sc = Scanner::new(cin.bytes().map(|c| c.unwrap() as char)); let N: usize = sc.get(); let Q: usize = sc.get(); let mut uf = UnionFind::new(N); for _ in 0..Q { let T: usize = sc.get(); match T { 1 => { let A: usize = sc.get::<usize>()-1; let B: usize = sc.get::<usize>()-1; uf.unite(A, B); }, 2 => { let A: usize = sc.get::<usize>()-1; let B: i64 = sc.get(); uf.add(A, B); }, 3 => { let A: usize = sc.get::<usize>()-1; let _: usize = sc.get(); println!("{}", uf.query(A)) } _ => panic!("error"), } } }