結果
| 問題 |
No.1625 三角形の質問
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-11-06 18:37:29 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
TLE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 5,824 bytes |
| コンパイル時間 | 20,888 ms |
| コンパイル使用メモリ | 374,036 KB |
| 実行使用メモリ | 146,048 KB |
| 最終ジャッジ日時 | 2024-11-07 17:24:53 |
| 合計ジャッジ時間 | 30,482 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 5 TLE * 1 -- * 13 |
ソースコード
#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;
use std::io::Read;
#[allow(dead_code)]
fn getline() -> String {
let mut ret = String::new();
std::io::stdin().read_line(&mut ret).ok().unwrap();
ret
}
fn get_word() -> String {
let stdin = std::io::stdin();
let mut stdin=stdin.lock();
let mut u8b: [u8; 1] = [0];
loop {
let mut buf: Vec<u8> = Vec::with_capacity(16);
loop {
let res = stdin.read(&mut u8b);
if res.unwrap_or(0) == 0 || u8b[0] <= b' ' {
break;
} else {
buf.push(u8b[0]);
}
}
if buf.len() >= 1 {
let ret = String::from_utf8(buf).unwrap();
return ret;
}
}
}
#[allow(dead_code)]
fn get<T: std::str::FromStr>() -> T { get_word().parse().ok().unwrap() }
const INF: i64 = 1 << 50;
// (max, -inf)
struct Dyn2DSegTree {
n: i64,
root: Node,
e: i64,
}
struct Node {
val: i64,
l: Option<Box<Node>>,
r: Option<Box<Node>>,
}
impl Dyn2DSegTree {
fn new(n: i64) -> Self {
assert_eq!(n & -n, n);
Dyn2DSegTree {
n: n,
root: Node::new(-INF),
e: -INF,
}
}
// O(log^2 n)
fn query(&self, x: std::ops::Range<i64>, y: std::ops::Range<i64>) -> i64 {
self.query_sub(Some(&self.root), x.start, x.end, 0, self.n, y.start, y.end, 0, self.n)
}
fn query_sub(&self, node: Option<&Node>,
lx: i64, rx: i64, ax: i64, bx: i64,
ly: i64, ry: i64, ay: i64, by: i64) -> i64 {
let node = if let Some(node) = node {
node
} else {
return self.e;
};
if rx <= ax || bx <= lx || ry <= ay || by <= ly {
return self.e;
}
if lx <= ax && bx <= rx && ly <= ay && by <= ry {
return node.val;
}
if bx - ax >= by - ay {
// bisect on x
assert!(bx - ax >= 2);
let mid = (bx + ax) / 2;
let p = self.query_sub(node.l.as_deref(), lx, rx, ax, mid, ly, ry, ay, by);
let q = self.query_sub(node.r.as_deref(), lx, rx, mid, bx, ly, ry, ay, by);
return std::cmp::max(p, q);
}
// bisect on y
assert!(by - ay >= 2);
let mid = (by + ay) / 2;
let p = self.query_sub(node.l.as_deref(), lx, rx, ax, bx, ly, ry, ay, mid);
let q = self.query_sub(node.r.as_deref(), lx, rx, ax, bx, ly, ry, mid, by);
std::cmp::max(p, q)
}
fn update(&mut self, x: i64, y: i64, val: i64) {
let n = self.n;
Self::update_sub(&mut self.root, x, y, val, self.e, 0, n, 0, n);
}
fn update_sub(node: &mut Node, x: i64, y: i64, val: i64, e: i64,
ax: i64, bx: i64, ay: i64, by: i64) {
if x < ax || bx <= x || y < ay || by <= y {
unreachable!();
}
if (ax, bx) == (x, x + 1) && (ay, by) == (y, y + 1) {
node.val = val;
return;
}
if bx - ax >= by - ay {
// bisect on x
assert!(bx - ax >= 2);
let mid = (bx + ax) / 2;
if x >= mid {
if node.r.is_none() {
node.r = Some(Box::new(Node::new(e)));
}
Self::update_sub(node.r.as_mut().unwrap(), x, y, val, e,
mid, bx, ay, by);
} else {
if node.l.is_none() {
node.l = Some(Box::new(Node::new(e)));
}
Self::update_sub(node.l.as_mut().unwrap(), x, y, val, e,
ax, mid, ay, by);
}
} else {
// bisect on y
assert!(by - ay >= 2);
let mid = (by + ay) / 2;
if y >= mid {
if node.r.is_none() {
node.r = Some(Box::new(Node::new(e)));
}
Self::update_sub(node.r.as_mut().unwrap(), x, y, val, e,
ax, bx, mid, by);
} else {
if node.l.is_none() {
node.l = Some(Box::new(Node::new(e)));
}
Self::update_sub(node.l.as_mut().unwrap(), x, y, val, e,
ax, bx, ay, mid);
}
}
let p = node.l.as_ref().map(|v| v.val).unwrap_or(e);
let q = node.r.as_ref().map(|v| v.val).unwrap_or(e);
node.val = std::cmp::max(p, q);
}
}
impl Node {
fn new(e: i64) -> Self {
Node {
val: e,
l: None,
r: None,
}
}
}
fn parse(x: [i64; 6]) -> (i64, i64, i64) {
let l = min(min(x[0], x[2]), x[4]);
let r = max(max(x[0], x[2]), x[4]);
let a = x[2] - x[0];
let b = x[3] - x[1];
let c = x[4] - x[0];
let d = x[5] - x[1];
(l, r, (a * d - b * c).abs())
}
fn main() {
let n: usize = get();
let q: usize = get();
let mut st = Dyn2DSegTree::new(1 << 30);
for _ in 0..n {
let mut x = [0i64; 6];
for i in 0..6 {
x[i] = get();
}
let (l, r, a) = parse(x);
let old = st.query(l..l + 1, r..r + 1);
st.update(l, r, max(old, a));
}
for _ in 0..q {
let ty: i32 = get();
if ty == 1 {
let mut x = [0i64; 6];
for i in 0..6 {
x[i] = get();
}
let (l, r, a) = parse(x);
let old = st.query(l..l + 1, r..r + 1);
st.update(l, r, max(old, a));
} else {
let l: i64 = get();
let r: i64 = get();
let ans = st.query(l..r + 1, l..r + 1);
println!("{}", max(-1, ans));
}
}
}