結果
問題 | No.2786 RMQ on Grid Path |
ユーザー | akakimidori |
提出日時 | 2024-06-15 13:02:03 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 173 ms / 6,000 ms |
コード長 | 4,389 bytes |
コンパイル時間 | 13,919 ms |
コンパイル使用メモリ | 381,388 KB |
実行使用メモリ | 31,232 KB |
最終ジャッジ日時 | 2024-06-15 13:02:25 |
合計ジャッジ時間 | 21,465 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
6,816 KB |
testcase_01 | AC | 1 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 | 1 ms
5,376 KB |
testcase_12 | AC | 144 ms
29,568 KB |
testcase_13 | AC | 141 ms
29,568 KB |
testcase_14 | AC | 173 ms
29,440 KB |
testcase_15 | AC | 145 ms
29,568 KB |
testcase_16 | AC | 145 ms
29,568 KB |
testcase_17 | AC | 143 ms
29,440 KB |
testcase_18 | AC | 143 ms
29,568 KB |
testcase_19 | AC | 142 ms
29,440 KB |
testcase_20 | AC | 170 ms
29,568 KB |
testcase_21 | AC | 141 ms
29,440 KB |
testcase_22 | AC | 126 ms
29,056 KB |
testcase_23 | AC | 124 ms
29,056 KB |
testcase_24 | AC | 101 ms
30,716 KB |
testcase_25 | AC | 100 ms
30,592 KB |
testcase_26 | AC | 102 ms
30,592 KB |
testcase_27 | AC | 45 ms
11,776 KB |
testcase_28 | AC | 40 ms
10,624 KB |
testcase_29 | AC | 122 ms
25,728 KB |
testcase_30 | AC | 36 ms
10,356 KB |
testcase_31 | AC | 8 ms
5,376 KB |
testcase_32 | AC | 60 ms
27,392 KB |
testcase_33 | AC | 25 ms
9,848 KB |
testcase_34 | AC | 95 ms
31,232 KB |
testcase_35 | AC | 94 ms
31,232 KB |
testcase_36 | AC | 93 ms
31,212 KB |
ソースコード
use std::io::Write; fn run() { input! { h: usize, w: usize, a: [[u32; w]; h], q: usize, ask: [(usize1, usize1, usize1, usize1); q], } let pos = |x, y| x * w + y; let mut e = vec![]; for i in 0..h { for j in 0..w { if i > 0 { let d = a[i - 1][j].max(a[i][j]); e.push((pos(i - 1, j), pos(i, j), d)); } if j > 0 { let d = a[i][j - 1].max(a[i][j]); e.push((pos(i, j - 1), pos(i, j), d)); } } } e.sort_by_key(|e| e.2); let mut dsu = DSU::new(h * w); let mut dp = vec![250000 + 1; h * w]; for (a, b, w) in e { if let Some((_p, c)) = dsu.unite(a, b) { dp[c] = w; } } let out = std::io::stdout(); let mut out = std::io::BufWriter::new(out.lock()); for (a, b, c, d) in ask { let mut x = pos(a, b); let mut y = pos(c, d); let mut ans = 0; while x != y { if dp[x] > dp[y] { std::mem::swap(&mut x, &mut y); } ans = dp[x]; x = dsu.parent(x).unwrap(); } writeln!(out, "{}", ans).ok(); } } fn main() { run(); } // ---------- begin input macro ---------- // reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 #[macro_export] 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_export] 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_export] 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 ---------- //---------- 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 ----------