結果
問題 | No.704 ゴミ拾い Medium |
ユーザー | koba-e964 |
提出日時 | 2020-10-15 09:55:55 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 235 ms / 1,500 ms |
コード長 | 4,551 bytes |
コンパイル時間 | 13,993 ms |
コンパイル使用メモリ | 378,796 KB |
実行使用メモリ | 11,392 KB |
最終ジャッジ日時 | 2024-07-20 19:42:06 |
合計ジャッジ時間 | 20,340 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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
5,248 KB |
testcase_01 | AC | 1 ms
5,248 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 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 | 2 ms
5,376 KB |
testcase_10 | AC | 3 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 3 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 18 ms
5,376 KB |
testcase_20 | AC | 2 ms
5,376 KB |
testcase_21 | AC | 3 ms
5,376 KB |
testcase_22 | AC | 3 ms
5,376 KB |
testcase_23 | AC | 32 ms
5,376 KB |
testcase_24 | AC | 210 ms
11,264 KB |
testcase_25 | AC | 180 ms
11,368 KB |
testcase_26 | AC | 161 ms
11,264 KB |
testcase_27 | AC | 162 ms
11,264 KB |
testcase_28 | AC | 162 ms
11,220 KB |
testcase_29 | AC | 163 ms
11,264 KB |
testcase_30 | AC | 159 ms
11,264 KB |
testcase_31 | AC | 161 ms
11,264 KB |
testcase_32 | AC | 161 ms
11,264 KB |
testcase_33 | AC | 191 ms
11,264 KB |
testcase_34 | AC | 228 ms
11,264 KB |
testcase_35 | AC | 226 ms
11,264 KB |
testcase_36 | AC | 227 ms
11,264 KB |
testcase_37 | AC | 235 ms
11,248 KB |
testcase_38 | AC | 232 ms
11,356 KB |
testcase_39 | AC | 231 ms
11,264 KB |
testcase_40 | AC | 228 ms
11,392 KB |
testcase_41 | AC | 227 ms
11,264 KB |
testcase_42 | AC | 231 ms
11,264 KB |
testcase_43 | AC | 232 ms
11,264 KB |
testcase_44 | AC | 1 ms
5,376 KB |
testcase_45 | AC | 1 ms
5,376 KB |
testcase_46 | AC | 159 ms
11,264 KB |
testcase_47 | AC | 212 ms
11,332 KB |
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, [graph1; $len:expr]) => {{ let mut g = vec![vec![]; $len]; let ab = read_value!($next, [(usize1, usize1)]); for (a, b) in ab { g[a].push(b); g[b].push(a); } g }}; ($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); read_value!($next, [$t; len]) }}; ($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()); } const INF: i64 = 1 << 60; fn monotone_minima(frm: &[i64], lat: &mut [i64], a: &[i64], x: &[i64], y: &[i64]) { let n = frm.len(); let m = lat.len(); if n == 0 || m == 0 { return; } assert_eq!(a.len(), m); assert_eq!(x.len(), n); assert_eq!(y.len(), n); assert_ne!(n, 0); let half = m / 2; let mut mi = (INF, n); for i in 0..n { let cost = (a[half] - x[i]).abs() + y[i].abs(); mi = min(mi, (cost + frm[i], i)); } let idx = mi.1; assert!(idx < n); lat[half] = min(lat[half], mi.0); monotone_minima(&frm[..idx + 1], &mut lat[..half], &a[..half], &x[..idx + 1], &y[..idx + 1]); monotone_minima(&frm[idx..], &mut lat[half + 1..], &a[half + 1..], &x[idx..], &y[idx..]); } fn induce(l: usize, mid: usize, r: usize, dp: &mut [i64], a: &[i64], x: &[i64], y: &[i64]) { let (frm, lat) = dp.split_at_mut(mid); let frm = &frm[l..]; let lat = &mut lat[..r - mid]; monotone_minima(frm, lat, &a[mid..r], &x[l..mid], &y[l..mid]); } // Performs online dp. // Converted from the following off-line dp: // dp[i + 1][j] <--min-- dp[i][k] + (a[j] - x[k + 1])^2 (k < j) fn dfs(l: usize, r: usize, dp: &mut [i64], a: &[i64], x: &[i64], y: &[i64]) { if l + 1 >= r { return; } let mid = (l + r) / 2; dfs(l, mid, dp, a, x, y); // induce induce(l, mid, r, dp, a, x, y); dfs(mid, r, dp, a, x, y); } // Tags: online-dp // https://qiita.com/tmaehara/items/0687af2cfb807cde7860 // https://ei1333.github.io/luzhiled/snippets/dp/monotone-minima.html // O(n log^2 n) fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts { ($($format:tt)*) => (let _ = write!(out,$($format)*);); } #[allow(unused)] macro_rules! putvec { ($v:expr) => { for i in 0..$v.len() { puts!("{}{}", $v[i], if i + 1 == $v.len() {"\n"} else {" "}); } } } input! { n: usize, a: [i64; n], x: [i64; n], y: [i64; n], } let mut a = a; a.insert(0, 0); let mut x = x; x.push(0); let mut y = y; y.push(0); let mut dp = vec![INF; n + 1]; dp[0] = 0; dfs(0, n + 1, &mut dp, &a, &x, &y); puts!("{}\n", dp[n]); } 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(); }