結果
問題 | No.2988 Min-Plus Convolution Query |
ユーザー | akakimidori |
提出日時 | 2024-12-14 10:35:53 |
言語 | Rust (1.77.0 + proconio) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,811 bytes |
コンパイル時間 | 25,181 ms |
コンパイル使用メモリ | 402,864 KB |
実行使用メモリ | 31,620 KB |
最終ジャッジ日時 | 2024-12-14 10:36:58 |
合計ジャッジ時間 | 50,448 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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
6,816 KB |
testcase_01 | AC | 1 ms
6,816 KB |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | AC | 1 ms
6,820 KB |
testcase_07 | AC | 1 ms
6,820 KB |
testcase_08 | AC | 1 ms
6,816 KB |
testcase_09 | AC | 21 ms
6,816 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | AC | 13 ms
6,816 KB |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | AC | 191 ms
8,644 KB |
testcase_18 | WA | - |
testcase_19 | AC | 80 ms
8,224 KB |
testcase_20 | TLE | - |
testcase_21 | TLE | - |
testcase_22 | WA | - |
testcase_23 | TLE | - |
testcase_24 | TLE | - |
testcase_25 | TLE | - |
testcase_26 | TLE | - |
testcase_27 | WA | - |
testcase_28 | TLE | - |
testcase_29 | WA | - |
testcase_30 | TLE | - |
testcase_31 | WA | - |
testcase_32 | AC | 1 ms
6,816 KB |
testcase_33 | AC | 1 ms
6,820 KB |
testcase_34 | AC | 1 ms
6,816 KB |
testcase_35 | AC | 1 ms
6,816 KB |
testcase_36 | AC | 1 ms
6,820 KB |
testcase_37 | AC | 1 ms
6,820 KB |
testcase_38 | AC | 1 ms
6,820 KB |
testcase_39 | AC | 1 ms
6,816 KB |
testcase_40 | AC | 1 ms
6,816 KB |
testcase_41 | AC | 1 ms
6,816 KB |
ソースコード
use std::io::Write; fn main() { input! { n: usize, q: usize, a: [i32; n], b: [i32; n], ask: [(usize1, i32, usize); q], } let mut solver = MinPlusConvolutionPointUpdate::new(a, b); let out = std::io::stdout(); let mut out = std::io::BufWriter::new(out.lock()); for (p, x, k) in ask { solver.set(p, x); writeln!(out, "{}", solver.find(k - 2)).ok(); } } pub struct MinPlusConvolutionPointUpdate<T> { a: Vec<T>, // 変更する列 b: Vec<T>, // 下に凸 size: usize, node: Vec<(usize, usize, usize)>, // L, R, Rの方が小さくなり始める場所 valid: Vec<bool>, } impl<T> MinPlusConvolutionPointUpdate<T> where T: std::ops::Add<Output = T> + Copy + Ord, { pub fn new(a: Vec<T>, b: Vec<T>) -> Self { assert!(a.len() > 0 && b.len() > 0); assert!(b.windows(3).all(|b| b[1] + b[1] <= b[0] + b[2])); let n = a.len(); let size = n.next_power_of_two(); let mut node = vec![(n, n, 2 * n); 2 * size]; let mut valid = vec![false; 2 * size]; for (i, (node, valid)) in node[size..] .iter_mut() .zip(valid[size..].iter_mut()) .enumerate() .take(a.len()) { *node = (i, i, i); *valid = true; } let mut res = Self { a, b, size, node, valid, }; for i in (1..size).rev() { if res.valid[2 * i + 1] { res.valid[i] = true; res.pull(i); } } res } pub fn set(&mut self, x: usize, v: T) { assert!(x < self.a.len()); self.a[x] = v; let mut pos = x + self.size; pos /= 2; while self.valid[pos] { self.pull(pos); pos /= 2; } } pub fn find(&self, x: usize) -> T { assert!(x < self.a.len() + self.b.len() - 1); let mut l = x.saturating_sub(self.b.len() - 1) + self.size; let mut r = x.min(self.a.len() - 1) + 1 + self.size; let mut ans: Option<T> = None; while l < r { if l & 1 == 1 { let v = self.find_subtree(l, x); if ans.map_or(true, |p| p > v) { ans = Some(v); } l += 1; } if r & 1 == 1 { r -= 1; let v = self.find_subtree(r, x); if ans.map_or(true, |p| p > v) { ans = Some(v); } } l >>= 1; r >>= 1; } ans.unwrap() } fn find_subtree(&self, v: usize, x: usize) -> T { let mut pos = v; while pos < self.size { if self.node[pos].2 <= x { pos = 2 * pos + 1; } else { pos = 2 * pos; } } self.eval_at(pos - self.size, x) } fn pull(&mut self, v: usize) { assert!(v < self.size); let mut l = 2 * v; let mut r = 2 * v + 1; let size = self.size; while l < size || r < size { let p = self.node[l]; let q = self.node[r]; if p.0 != p.1 && self.eval(p.1, q.0, p.2) { l = 2 * l; } else if q.0 != q.1 && !self.eval(p.1, q.0, q.2) { r = 2 * r + 1; } else if p.0 != p.1 { l = 2 * l + 1; } else { r = 2 * r; } } let x = l - size; let y = r - size; let mut ng = x; let mut ok = y + self.b.len(); while ok - ng > 1 { let mid = (ok + ng) / 2; if self.eval(x, y, mid) { ok = mid; } else { ng = mid; } } self.node[v] = (x, y, ok); } // A[x] + B[z-x] >= A[y] + B[z-y] かの判定 fn eval(&self, x: usize, y: usize, z: usize) -> bool { assert!(x < y); if z < y { false } else if z >= x + self.b.len() { true } else { self.eval_at(x, z) >= self.eval_at(y, z) } } fn eval_at(&self, x: usize, z: usize) -> T { self.a[x] + self.b[z - x] } } // ---------- 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 ----------