結果
問題 | No.738 平らな農地 |
ユーザー |
![]() |
提出日時 | 2022-01-01 22:56:48 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 37 ms / 2,000 ms |
コード長 | 23,318 bytes |
コンパイル時間 | 12,561 ms |
コンパイル使用メモリ | 385,088 KB |
実行使用メモリ | 8,564 KB |
最終ジャッジ日時 | 2024-10-10 16:44:05 |
合計ジャッジ時間 | 16,760 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 87 |
コンパイルメッセージ
warning: unused imports: `Leaf`, `Tuple`, `VecLen` --> src/main.rs:424:27 | 424 | multi_token::{Leaf, Parser, ParserTuple, RawTuple, Tuple, VecLen}, | ^^^^ ^^^^^ ^^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: unused import: `with_str` --> src/main.rs:662:35 | 662 | pub use self::i::{with_stdin, with_str}; | ^^^^^^^^ warning: unused imports: `ParserTuple`, `Parser`, `RawTuple`, `Token`, `Usize1` --> src/main.rs:664:28 | 664 | pub use super::i::{Parser, ParserTuple, RawTuple, Token, Usize1}; | ^^^^^^ ^^^^^^^^^^^ ^^^^^^^^ ^^^^^ ^^^^^^
ソースコード
use std::{cmp::Reverse, collections::BinaryHeap, usize::MAX};#[allow(unused_imports)]#[cfg(feature = "dbg")]use dbg::lg;fn main() {let mut buf = ngtio::with_stdin();let n = buf.usize();let k = buf.usize();let a = buf.vec::<usize>(n);let mut queue = Queue::default();for &x in &a[..k] {queue.insert(x);}let mut ans = MAX;for (i, j) in (0..).zip(k..) {let med = queue.left.peek().unwrap();let cost =(med * queue.left_count - queue.left_sum) + (queue.right_sum - med * queue.right_count);ans = ans.min(cost);if j == n {break;}queue.remove(a[i]);queue.insert(a[j]);}println!("{}", ans);}#[derive(Clone, Debug, Default)]struct Queue {left: BinaryHeap<usize>,right: BinaryHeap<Reverse<usize>>,left_removed: BinaryHeap<usize>,right_removed: BinaryHeap<Reverse<usize>>,left_count: usize,right_count: usize,left_sum: usize,right_sum: usize,}impl Queue {fn insert(&mut self, x: usize) {if self.left_count > self.right_count {self.move_right();}self.left.push(x);self.left_count += 1;self.left_sum += x;self.settle();if self.is_reversed() {self.move_right();self.move_left();}}fn remove(&mut self, x: usize) {if self.left.peek().map_or(false, |&lmax| x <= lmax) {self.left_removed.push(x);self.left_count -= 1;self.left_sum -= x;self.settle();if self.left_count < self.right_count {self.move_left();}} else {self.right_removed.push(Reverse(x));self.right_count -= 1;self.right_sum -= x;if self.left_count > self.right_count + 1 {self.move_right();}}}fn is_reversed(&self) -> bool {!self.left.is_empty()&& !self.right.is_empty()&& self.left.peek().unwrap() > &self.right.peek().unwrap().0}fn move_left(&mut self) {let x = self.right.pop().unwrap().0;self.right_sum -= x;self.right_count -= 1;self.left_sum += x;self.left_count += 1;self.left.push(x);self.settle();}fn move_right(&mut self) {let x = self.left.pop().unwrap();self.left_count -= 1;self.left_sum -= x;self.right_count += 1;self.right_sum += x;self.right.push(Reverse(x));self.settle();}fn settle(&mut self) {while !self.left.is_empty() && self.left.peek() == self.left_removed.peek() {self.left.pop().unwrap();self.left_removed.pop().unwrap();}while !self.right.is_empty() && self.right.peek() == self.right_removed.peek() {self.right.pop().unwrap();self.right_removed.pop().unwrap();}}}// wavelet_matrix {{{#[allow(dead_code)]mod wavelet_matrix {#![allow(clippy::len_zero)]use std::{fmt::Debug,iter::FromIterator,mem::size_of,ops::{Bound, Range, RangeBounds},};const UNIT: usize = size_of::<usize>();#[derive(Clone, Default, Hash, PartialEq)]pub struct WaveletMatrix {table: Vec<StaticBitVec>,}impl Debug for WaveletMatrix {fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {f.debug_list().entries((0..self.len()).map(|i| self.access(i))).finish()}}impl FromIterator<usize> for WaveletMatrix {fn from_iter<I: IntoIterator<Item = usize>>(iter: I) -> Self {let mut slice = iter.into_iter().map(Into::into).collect::<Vec<_>>();Self::from_slice_of_usize_mut(&mut slice)}}impl WaveletMatrix {pub fn is_empty(&self) -> bool {self.table.is_empty()}pub fn len(&self) -> usize {self.table.first().map_or(0, |row| row.len())}pub fn lim(&self) -> usize {1 << self.table.len()}pub fn from_slice_of_usize_mut(slice: &mut [usize]) -> Self {let ht = slice.iter().copied().max().map_or(0, |value| {(value + 1).next_power_of_two().trailing_zeros() as usize});let table = (0..ht).rev().map(|p| {let res = slice.iter().map(|&value| value >> p & 1 == 1).collect();stable_partition_by_key(slice, |value| value >> p & 1 == 1);res}).collect();Self { table }}pub fn access(&self, mut i: usize) -> usize {assert!(i < self.table[0].len());let mut ans = 0;for row in &self.table {let here = row.access(i);i = next_position(row, i, row.access(i));ans <<= 1;ans |= here as usize;}ans}pub fn range_freq(&self,index_range: impl RangeBounds<usize>,value_range: impl RangeBounds<usize>,) -> usize {self.span(open(index_range, self.len())).range_freq(&open(value_range, self.lim()))}pub fn next_value(&self,index_range: impl RangeBounds<usize>,value_range: impl RangeBounds<usize>,) -> Option<usize> {self.span(open(index_range, self.len())).next_value(&open(value_range, self.lim()))}pub fn prev_value(&self,index_range: impl RangeBounds<usize>,value_range: impl RangeBounds<usize>,) -> Option<usize> {self.span(open(index_range, self.len())).prev_value(&open(value_range, self.lim()))}pub fn quantile(&self,k: usize,index_range: impl RangeBounds<usize>,value_range: impl RangeBounds<usize>,) -> Option<usize> {self.span(open(index_range, self.len())).quantile(k, &open(value_range, self.lim())).ok()}fn span(&self, index_range: Range<usize>) -> Span<'_> {Span {span: &self.table,index_range,value_range: 0..self.lim(),}}}fn stable_partition_by_key(slice: &mut [usize], is_upper: impl Fn(usize) -> bool) -> usize {let mut upper = Vec::new();let mut i = 0;for j in 0..slice.len() {if is_upper(slice[j]) {upper.push(slice[j]);} else {slice[i] = slice[j];i += 1;}}slice[i..].copy_from_slice(&upper);i}fn next_position(row: &StaticBitVec, i: usize, which: bool) -> usize {match which {false => i - row.rank(i),true => row.len() - row.rank(row.len()) + row.rank(i),}}fn next_position_range(row: &StaticBitVec, range: &Range<usize>, which: bool) -> Range<usize> {next_position(row, range.start, which)..next_position(row, range.end, which)}#[derive(Clone, Debug, Default, Hash, PartialEq)]pub struct StaticBitVec {len: usize,rank: Vec<usize>,pattern: Vec<usize>,}impl FromIterator<bool> for StaticBitVec {fn from_iter<T: IntoIterator<Item = bool>>(iter: T) -> Self {let mut iter = iter.into_iter();let mut rank = Vec::new();let mut pattern = Vec::new();let mut rank_c = 0;let mut pattern_c = 0;let mut len = 0;'OUTER: loop {rank.push(rank_c);for i in 0..UNIT {match iter.next() {None => {pattern.push(pattern_c);break 'OUTER;}Some(false) => (),Some(true) => {pattern_c |= 1 << i;rank_c += 1;}}len += 1;}pattern.push(pattern_c);pattern_c = 0;}Self { len, rank, pattern }}}impl StaticBitVec {pub fn is_empty(&self) -> bool {self.len == 0}pub fn len(&self) -> usize {self.len}pub fn access(&self, i: usize) -> bool {assert!(i < self.len);let (q, r) = divrem(i, UNIT);self.pattern[q] >> r & 1 == 1}pub fn rank(&self, end: usize) -> usize {assert!(end <= self.len);let (q, r) = divrem(end, UNIT);self.rank[q] + (self.pattern[q] & ((1 << r) - 1)).count_ones() as usize}pub fn select(&self, target: usize) -> usize {if target == 0 {return 0;}let mut lr = 0..self.rank.len();while 1 < lr.len() {let c = midpoint(&lr);*if self.rank[c] < target {&mut lr.start} else {&mut lr.end} = c;}let q = lr.start;let mut lr = 0..UNIT;while 1 < lr.len() {let c = midpoint(&lr);*if (self.rank[q] + (self.pattern[q] & ((1 << c) - 1)).count_ones() as usize)< target{&mut lr.start} else {&mut lr.end} = c;}q * UNIT + lr.end}}#[derive(Clone, Debug, Hash, PartialEq)]struct Span<'a> {span: &'a [StaticBitVec],index_range: Range<usize>,value_range: Range<usize>,}impl<'a> Span<'a> {fn left_down(&self) -> Self {Self {span: &self.span[1..],index_range: next_position_range(&self.span[0], &self.index_range, false),value_range: self.value_range.start..midpoint(&self.value_range),}}fn right_down(&self) -> Self {Self {span: &self.span[1..],index_range: next_position_range(&self.span[0], &self.index_range, true),value_range: midpoint(&self.value_range)..self.value_range.end,}}fn range_freq(&self, target: &Range<usize>) -> usize {if is_disjoint_with(&self.value_range, target) || self.index_range.len() == 0 {0} else if is_subrange_of(&self.value_range, target) {self.index_range.len()} else {self.left_down().range_freq(target) + self.right_down().range_freq(target)}}fn next_value(&self, target: &Range<usize>) -> Option<usize> {if is_disjoint_with(&self.value_range, target) || self.index_range.len() == 0 {None} else if self.value_range.len() == 1 {Some(self.value_range.start)} else {self.left_down().next_value(target).or_else(|| self.right_down().next_value(target))}}fn prev_value(&self, target: &Range<usize>) -> Option<usize> {if is_disjoint_with(&self.value_range, target) || self.index_range.len() == 0 {None} else if self.value_range.len() == 1 {Some(self.value_range.start)} else {self.right_down().prev_value(target).or_else(|| self.left_down().prev_value(target))}}fn quantile(&self, k: usize, target: &Range<usize>) -> Result<usize, usize> {let ans = if is_disjoint_with(&self.value_range, target) {Err(0)} else if is_subrange_of(&self.value_range, target) && self.index_range.len() <= k {Err(self.index_range.len())} else if self.value_range.len() == 1 {Ok(self.value_range.start)} else {self.left_down().quantile(k, target).or_else(|len| {self.right_down().quantile(k - len, target).map_err(|e| e + len)})};ans}}fn midpoint(range: &Range<usize>) -> usize {range.start + (range.end - range.start) / 2}fn is_disjoint_with(lhs: &Range<usize>, rhs: &Range<usize>) -> bool {lhs.end <= rhs.start || rhs.end <= lhs.start}fn is_subrange_of(lhs: &Range<usize>, rhs: &Range<usize>) -> bool {rhs.start <= lhs.start && lhs.end <= rhs.end}fn divrem(num: usize, den: usize) -> (usize, usize) {let q = num / den;(q, num - q * den)}fn open(range: impl RangeBounds<usize>, len: usize) -> Range<usize> {(match range.start_bound() {Bound::Included(&l) => l,Bound::Excluded(&l) => l + 1,Bound::Unbounded => 0,})..(match range.end_bound() {Bound::Included(&r) => r + 1,Bound::Excluded(&r) => r,Bound::Unbounded => len,})}}// }}}// template {{{#[cfg(not(feature = "dbg"))]#[allow(unused_macros)]#[macro_export]macro_rules! lg {($($expr:expr),*) => {};}#[allow(dead_code)]mod ngtio {mod i {pub use self::{multi_token::{Leaf, Parser, ParserTuple, RawTuple, Tuple, VecLen},token::{Token, Usize1},};use std::{io::{self, BufRead},iter,};pub fn with_stdin() -> Tokenizer<io::BufReader<io::Stdin>> {io::BufReader::new(io::stdin()).tokenizer()}pub fn with_str(src: &str) -> Tokenizer<&[u8]> {src.as_bytes().tokenizer()}pub struct Tokenizer<S: BufRead> {queue: Vec<String>, // FIXME: String のみにすると速そうです。scanner: S,}macro_rules! prim_method {($name:ident: $T:ty) => {pub fn $name(&mut self) -> $T {<$T>::leaf().parse(self)}};($name:ident) => {prim_method!($name: $name);};}macro_rules! prim_methods {($name:ident: $T:ty; $($rest:tt)*) => {prim_method!($name:$T);prim_methods!($($rest)*);};($name:ident; $($rest:tt)*) => {prim_method!($name);prim_methods!($($rest)*);};() => ()}impl<S: BufRead> Tokenizer<S> {pub fn token(&mut self) -> String {self.load();self.queue.pop().expect("入力が終了したのですが。")}pub fn new(scanner: S) -> Self {Self {queue: Vec::new(),scanner,}}fn load(&mut self) {while self.queue.is_empty() {let mut s = String::new();let length = self.scanner.read_line(&mut s).unwrap(); // 入力が UTF-8 でないときにエラーだそうです。if length == 0 {break;}self.queue = s.split_whitespace().rev().map(str::to_owned).collect();}}pub fn skip_line(&mut self) {assert!(self.queue.is_empty(),"行の途中で呼ばないでいただきたいです。現在のトークンキュー: {:?}",&self.queue);self.load();}pub fn end(&mut self) {self.load();assert!(self.queue.is_empty(), "入力はまだあります!");}pub fn parse<T: Token>(&mut self) -> T::Output {T::parse(&self.token())}pub fn parse_collect<T: Token, B>(&mut self, n: usize) -> BwhereB: iter::FromIterator<T::Output>,{iter::repeat_with(|| self.parse::<T>()).take(n).collect()}pub fn tuple<T: RawTuple>(&mut self) -> <T::LeafTuple as Parser>::Output {T::leaf_tuple().parse(self)}pub fn vec<T: Token>(&mut self, len: usize) -> Vec<T::Output> {T::leaf().vec(len).parse(self)}pub fn vec_tuple<T: RawTuple>(&mut self,len: usize,) -> Vec<<T::LeafTuple as Parser>::Output> {T::leaf_tuple().vec(len).parse(self)}pub fn vec2<T: Token>(&mut self, height: usize, width: usize) -> Vec<Vec<T::Output>> {T::leaf().vec(width).vec(height).parse(self)}pub fn vec2_tuple<T>(&mut self,height: usize,width: usize,) -> Vec<Vec<<T::LeafTuple as Parser>::Output>>whereT: RawTuple,{T::leaf_tuple().vec(width).vec(height).parse(self)}prim_methods! {u8; u16; u32; u64; u128; usize;i8; i16; i32; i64; i128; isize;f32; f64;char; string: String;}}mod token {use super::multi_token::Leaf;use std::{any, fmt, marker, str};pub trait Token: Sized {type Output;fn parse(s: &str) -> Self::Output;fn leaf() -> Leaf<Self> {Leaf(marker::PhantomData)}}impl<T> Token for TwhereT: str::FromStr,<Self as str::FromStr>::Err: fmt::Debug,{type Output = Self;fn parse(s: &str) -> Self::Output {s.parse().unwrap_or_else(|_| {panic!("Parse error!: ({}: {})", s, any::type_name::<Self>(),)})}}pub struct Usize1 {}impl Token for Usize1 {type Output = usize;fn parse(s: &str) -> Self::Output {usize::parse(s).checked_sub(1).expect("Parse error! (Zero substruction error of Usize1)")}}}mod multi_token {use super::{Token, Tokenizer};use std::{io::BufRead, iter, marker};pub trait Parser: Sized {type Output;fn parse<S: BufRead>(&self, server: &mut Tokenizer<S>) -> Self::Output;fn vec(self, len: usize) -> VecLen<Self> {VecLen { len, elem: self }}}pub struct Leaf<T>(pub(super) marker::PhantomData<T>);impl<T: Token> Parser for Leaf<T> {type Output = T::Output;fn parse<S: BufRead>(&self, server: &mut Tokenizer<S>) -> T::Output {server.parse::<T>()}}pub struct VecLen<T> {pub len: usize,pub elem: T,}impl<T: Parser> Parser for VecLen<T> {type Output = Vec<T::Output>;fn parse<S: BufRead>(&self, server: &mut Tokenizer<S>) -> Self::Output {iter::repeat_with(|| self.elem.parse(server)).take(self.len).collect()}}pub trait RawTuple {type LeafTuple: Parser;fn leaf_tuple() -> Self::LeafTuple;}pub trait ParserTuple {type Tuple: Parser;fn tuple(self) -> Self::Tuple;}pub struct Tuple<T>(pub T);macro_rules! impl_tuple {($($t:ident: $T:ident),*) => {impl<$($T),*> Parser for Tuple<($($T,)*)>where$($T: Parser,)*{type Output = ($($T::Output,)*);#[allow(unused_variables)]fn parse<S: BufRead >(&self, server: &mut Tokenizer<S>) -> Self::Output {match self {Tuple(($($t,)*)) => {($($t.parse(server),)*)}}}}impl<$($T: Token),*> RawTuple for ($($T,)*) {type LeafTuple = Tuple<($(Leaf<$T>,)*)>;fn leaf_tuple() -> Self::LeafTuple {Tuple(($($T::leaf(),)*))}}impl<$($T: Parser),*> ParserTuple for ($($T,)*) {type Tuple = Tuple<($($T,)*)>;fn tuple(self) -> Self::Tuple {Tuple(self)}}};}impl_tuple!();impl_tuple!(t1: T1);impl_tuple!(t1: T1, t2: T2);impl_tuple!(t1: T1, t2: T2, t3: T3);impl_tuple!(t1: T1, t2: T2, t3: T3, t4: T4);impl_tuple!(t1: T1, t2: T2, t3: T3, t4: T4, t5: T5);impl_tuple!(t1: T1, t2: T2, t3: T3, t4: T4, t5: T5, t6: T6);impl_tuple!(t1: T1, t2: T2, t3: T3, t4: T4, t5: T5, t6: T6, t7: T7);impl_tuple!(t1: T1,t2: T2,t3: T3,t4: T4,t5: T5,t6: T6,t7: T7,t8: T8);}trait Scanner: BufRead + Sized {fn tokenizer(self) -> Tokenizer<Self> {Tokenizer::new(self)}}impl<R: BufRead> Scanner for R {}}pub use self::i::{with_stdin, with_str};mod prelude {pub use super::i::{Parser, ParserTuple, RawTuple, Token, Usize1};}}// }}}