結果
問題 | No.1030 だんしんぐぱーりない |
ユーザー | koba-e964 |
提出日時 | 2020-04-26 02:28:29 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 166 ms / 2,000 ms |
コード長 | 7,035 bytes |
コンパイル時間 | 16,381 ms |
コンパイル使用メモリ | 378,384 KB |
実行使用メモリ | 20,116 KB |
最終ジャッジ日時 | 2024-11-08 19:00:42 |
合計ジャッジ時間 | 22,335 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 108 ms
16,152 KB |
testcase_06 | AC | 97 ms
14,036 KB |
testcase_07 | AC | 61 ms
8,672 KB |
testcase_08 | AC | 66 ms
9,692 KB |
testcase_09 | AC | 99 ms
16,092 KB |
testcase_10 | AC | 38 ms
5,632 KB |
testcase_11 | AC | 100 ms
12,240 KB |
testcase_12 | AC | 87 ms
14,112 KB |
testcase_13 | AC | 79 ms
13,016 KB |
testcase_14 | AC | 112 ms
14,716 KB |
testcase_15 | AC | 56 ms
6,784 KB |
testcase_16 | AC | 84 ms
11,956 KB |
testcase_17 | AC | 105 ms
15,588 KB |
testcase_18 | AC | 132 ms
15,264 KB |
testcase_19 | AC | 57 ms
7,424 KB |
testcase_20 | AC | 70 ms
10,056 KB |
testcase_21 | AC | 80 ms
12,800 KB |
testcase_22 | AC | 67 ms
10,316 KB |
testcase_23 | AC | 83 ms
10,744 KB |
testcase_24 | AC | 71 ms
8,320 KB |
testcase_25 | AC | 84 ms
10,940 KB |
testcase_26 | AC | 48 ms
5,632 KB |
testcase_27 | AC | 59 ms
6,656 KB |
testcase_28 | AC | 100 ms
13,288 KB |
testcase_29 | AC | 78 ms
13,040 KB |
testcase_30 | AC | 63 ms
10,224 KB |
testcase_31 | AC | 66 ms
9,780 KB |
testcase_32 | AC | 102 ms
14,432 KB |
testcase_33 | AC | 103 ms
15,132 KB |
testcase_34 | AC | 41 ms
6,272 KB |
testcase_35 | AC | 157 ms
19,984 KB |
testcase_36 | AC | 162 ms
19,984 KB |
testcase_37 | AC | 159 ms
20,112 KB |
testcase_38 | AC | 160 ms
20,116 KB |
testcase_39 | AC | 166 ms
20,112 KB |
testcase_40 | AC | 1 ms
5,248 KB |
testcase_41 | AC | 1 ms
5,248 KB |
コンパイルメッセージ
warning: field `dep` is never read --> src/main.rs:125:5 | 121 | struct LCA { | --- field in this struct ... 125 | dep: Vec<usize>, | ^^^ | = note: `#[warn(dead_code)]` on by default
ソースコード
#[allow(unused_imports)] use std::cmp::*; #[allow(unused_imports)] use std::collections::*; use std::io::{Write, BufWriter}; // https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 macro_rules! input { ($($r:tt)*) => { let stdin = std::io::stdin(); let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock())); let mut next = move || -> String{ bytes .by_ref() .map(|r|r.unwrap() as char) .skip_while(|c|c.is_whitespace()) .take_while(|c|!c.is_whitespace()) .collect() }; input_inner!{next, $($r)*} }; } macro_rules! input_inner { ($next:expr) => {}; ($next:expr, ) => {}; ($next:expr, $var:ident : $t:tt $($r:tt)*) => { let $var = read_value!($next, $t); input_inner!{$next $($r)*} }; } macro_rules! read_value { ($next:expr, ( $($t:tt),* )) => { ( $(read_value!($next, $t)),* ) }; ($next:expr, [ $t:tt ; $len:expr ]) => { (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>() }; ($next:expr, chars) => { read_value!($next, String).chars().collect::<Vec<char>>() }; ($next:expr, usize1) => { read_value!($next, usize) - 1 }; ($next:expr, [ $t:tt ]) => {{ let len = read_value!($next, usize); (0..len).map(|_| read_value!($next, $t)).collect::<Vec<_>>() }}; ($next:expr, $t:ty) => { $next().parse::<$t>().expect("Parse error") }; } #[allow(unused)] macro_rules! debug { ($($format:tt)*) => (write!(std::io::stderr(), $($format)*).unwrap()); } #[allow(unused)] macro_rules! debugln { ($($format:tt)*) => (writeln!(std::io::stderr(), $($format)*).unwrap()); } /** * Segment Tree. This data structure is useful for fast folding on intervals of an array * whose elements are elements of monoid I. Note that constructing this tree requires the identity * element of I and the operation of I. * Verified by: yukicoder No. 259 (http://yukicoder.me/submissions/100581) * AGC015-E (http://agc015.contest.atcoder.jp/submissions/1461001) */ struct SegTree<I, BiOp> { n: usize, dat: Vec<I>, op: BiOp, e: I, } impl<I, BiOp> SegTree<I, BiOp> where BiOp: Fn(I, I) -> I, I: Copy { pub fn new(n_: usize, op: BiOp, e: I) -> Self { let mut n = 1; while n < n_ { n *= 2; } // n is a power of 2 SegTree {n: n, dat: vec![e; 2 * n - 1], op: op, e: e} } /* ary[k] <- v */ pub fn update(&mut self, idx: usize, v: I) { let mut k = idx + self.n - 1; self.dat[k] = v; while k > 0 { k = (k - 1) / 2; self.dat[k] = (self.op)(self.dat[2 * k + 1], self.dat[2 * k + 2]); } } /* [a, b) (note: half-inclusive) * http://proc-cpuinfo.fixstars.com/2017/07/optimize-segment-tree/ */ pub fn query(&self, mut a: usize, mut b: usize) -> I { let mut left = self.e; let mut right = self.e; a += self.n - 1; b += self.n - 1; while a < b { if (a & 1) == 0 { left = (self.op)(left, self.dat[a]); } if (b & 1) == 0 { right = (self.op)(self.dat[b - 1], right); } a = a / 2; b = (b - 1) / 2; } (self.op)(left, right) } } struct LCA { st: Vec<usize>, par: Vec<usize>, jmp: Vec<usize>, dep: Vec<usize>, } // Constant-factor speedup used in https://codeforces.com/contest/1083/submission/46874242. // Based on HL-decomposition. // par[root] = root should hold. // Verified by https://codeforces.com/contest/1083/submission/51934575. impl LCA { // For each node, make the most heavy child the first child. fn dfs_left(ch: &mut [Vec<usize>], v: usize, sz: &mut [usize], dep: &mut [usize], d: usize) { dep[v] = d; let mut s = 1; for i in 0..ch[v].len() { let w = ch[v][i]; Self::dfs_left(ch, w, sz, dep, d + 1); s += sz[w]; if sz[w] > sz[ch[v][0]] { ch[v].swap(i, 0); } } sz[v] = s; } fn dfs(ch: &[Vec<usize>], st: &mut [usize], v: usize, cnt: &mut usize, jmp: &mut [usize]) { st[v] = *cnt; *cnt += 1; if ch[v].len() >= 1 { jmp[ch[v][0]] = jmp[v]; } for &w in &ch[v] { Self::dfs(ch, st, w, cnt, jmp); } } fn new(ch: &mut [Vec<usize>], par: &[usize], root: usize) -> Self { let n = ch.len(); let mut st = vec![0; n]; let mut cnt = 0; let mut sz = vec![0; n]; let mut jmp = vec![0; n]; let mut dep = vec![0; n]; Self::dfs_left(ch, root, &mut sz, &mut dep, 0); for i in 0..n { jmp[i] = i; } Self::dfs(ch, &mut st, root, &mut cnt, &mut jmp); LCA { st: st, par: par.to_vec(), jmp: jmp, dep: dep, } } fn lca(&self, mut x: usize, mut y: usize) -> usize { let jmp = &self.jmp; let st = &self.st; while jmp[x] != jmp[y] { if st[x] < st[y] { std::mem::swap(&mut x, &mut y); } x = self.par[jmp[x]]; } if st[x] < st[y] { x } else { y } } } fn dfs(ch: &[Vec<usize>], ans: &mut [i64], c: &[i64], v: usize, x: i64) { let x = max(x, c[v]); ans[v] = x; for &w in &ch[v] { dfs(ch, ans, c, w, x); } } fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts { ($($format:tt)*) => (let _ = write!(out,$($format)*);); } input! { n: usize, k: usize, q: usize, c: [i64; n], a: [usize1; k], ef: [(usize1, usize1); n - 1], t: [(i32, usize1, usize1); q], } let mut ch = vec![vec![]; n]; let mut par = vec![0; n]; for &(e, f) in &ef { ch[f].push(e); par[e] = f; } let lca = LCA::new(&mut ch, &par, 0); // precomp let mut ans = vec![0; n]; dfs(&ch, &mut ans, &c, 0, 0); let mut st = SegTree::new(k, |x, y| { match (x, y) { (None, _) => y, (_, None) => x, (Some(x), Some(y)) => Some(lca.lca(x, y)) } }, None); for i in 0..k { st.update(i, Some(a[i])); } for (kind, x, y) in t { if kind == 1 { st.update(x, Some(y)); } else { let l = x; let r = y + 1; let v = st.query(l, r).unwrap(); puts!("{}\n", ans[v]); } } } fn main() { // In order to avoid potential stack overflow, spawn a new thread. let stack_size = 104_857_600; // 100 MB let thd = std::thread::Builder::new().stack_size(stack_size); thd.spawn(|| solve()).unwrap().join().unwrap(); }