結果
問題 | No.2694 The Early Bird Catches The Worm |
ユーザー | naut3 |
提出日時 | 2024-03-22 22:06:44 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 52 ms / 2,000 ms |
コード長 | 3,907 bytes |
コンパイル時間 | 12,349 ms |
コンパイル使用メモリ | 383,228 KB |
実行使用メモリ | 10,240 KB |
最終ジャッジ日時 | 2024-09-30 11:37:30 |
合計ジャッジ時間 | 16,824 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 3 ms
5,248 KB |
testcase_02 | AC | 1 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 1 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 1 ms
5,248 KB |
testcase_12 | AC | 1 ms
5,248 KB |
testcase_13 | AC | 1 ms
5,248 KB |
testcase_14 | AC | 2 ms
5,248 KB |
testcase_15 | AC | 1 ms
5,248 KB |
testcase_16 | AC | 1 ms
5,248 KB |
testcase_17 | AC | 3 ms
5,248 KB |
testcase_18 | AC | 1 ms
5,248 KB |
testcase_19 | AC | 1 ms
5,248 KB |
testcase_20 | AC | 1 ms
5,248 KB |
testcase_21 | AC | 1 ms
5,248 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 2 ms
5,248 KB |
testcase_24 | AC | 39 ms
5,248 KB |
testcase_25 | AC | 34 ms
5,248 KB |
testcase_26 | AC | 19 ms
5,248 KB |
testcase_27 | AC | 52 ms
5,504 KB |
testcase_28 | AC | 37 ms
6,144 KB |
testcase_29 | AC | 6 ms
5,248 KB |
testcase_30 | AC | 32 ms
8,320 KB |
testcase_31 | AC | 19 ms
5,504 KB |
testcase_32 | AC | 36 ms
8,576 KB |
testcase_33 | AC | 32 ms
8,448 KB |
testcase_34 | AC | 2 ms
5,248 KB |
testcase_35 | AC | 15 ms
5,248 KB |
testcase_36 | AC | 20 ms
6,272 KB |
testcase_37 | AC | 35 ms
9,344 KB |
testcase_38 | AC | 21 ms
6,784 KB |
testcase_39 | AC | 6 ms
5,248 KB |
testcase_40 | AC | 15 ms
5,504 KB |
testcase_41 | AC | 8 ms
5,248 KB |
testcase_42 | AC | 1 ms
5,248 KB |
testcase_43 | AC | 3 ms
5,248 KB |
testcase_44 | AC | 32 ms
9,344 KB |
testcase_45 | AC | 31 ms
9,344 KB |
testcase_46 | AC | 10 ms
5,248 KB |
testcase_47 | AC | 10 ms
5,248 KB |
testcase_48 | AC | 18 ms
6,016 KB |
testcase_49 | AC | 32 ms
8,704 KB |
testcase_50 | AC | 33 ms
8,704 KB |
testcase_51 | AC | 32 ms
8,704 KB |
testcase_52 | AC | 32 ms
8,704 KB |
testcase_53 | AC | 31 ms
8,704 KB |
testcase_54 | AC | 38 ms
9,984 KB |
testcase_55 | AC | 40 ms
10,240 KB |
testcase_56 | AC | 36 ms
9,984 KB |
testcase_57 | AC | 40 ms
10,240 KB |
testcase_58 | AC | 34 ms
10,240 KB |
testcase_59 | AC | 41 ms
10,112 KB |
testcase_60 | AC | 40 ms
10,240 KB |
testcase_61 | AC | 39 ms
10,240 KB |
testcase_62 | AC | 39 ms
10,240 KB |
testcase_63 | AC | 37 ms
10,112 KB |
testcase_64 | AC | 36 ms
10,240 KB |
testcase_65 | AC | 44 ms
10,112 KB |
testcase_66 | AC | 39 ms
10,112 KB |
testcase_67 | AC | 35 ms
10,112 KB |
testcase_68 | AC | 36 ms
10,112 KB |
testcase_69 | AC | 32 ms
10,240 KB |
testcase_70 | AC | 34 ms
10,112 KB |
testcase_71 | AC | 32 ms
10,112 KB |
testcase_72 | AC | 35 ms
10,240 KB |
testcase_73 | AC | 33 ms
10,240 KB |
testcase_74 | AC | 17 ms
6,144 KB |
testcase_75 | AC | 33 ms
10,240 KB |
ソースコード
#![allow(non_snake_case, unused_imports, unused_must_use)] use std::io::{self, prelude::*}; use std::str; fn main() { let (stdin, stdout) = (io::stdin(), io::stdout()); let mut scan = Scanner::new(stdin.lock()); let mut out = io::BufWriter::new(stdout.lock()); macro_rules! input { ($T: ty) => { scan.token::<$T>() }; ($T: ty, $N: expr) => { (0..$N).map(|_| scan.token::<$T>()).collect::<Vec<_>>() }; } let N = input!(usize); let H = input!(isize); let A = input!(isize, N); let B = input!(isize, N); let mut BIT_A = BinaryIndexedTree::new(N); let mut BIT_B = BinaryIndexedTree::new(N); for i in 0..N { BIT_A.add(i, A[i]); BIT_B.add(i, B[i]); } let mut ans = 0; let mut right = 0; let mut h_now = 0; for left in 0..N { loop { if right < N { h_now += B[right] * (right + 1 - left) as isize; right += 1; } else { break; } if h_now > H { right -= 1; h_now -= B[right] * (right + 1 - left) as isize; break; } } if left < right { ans = std::cmp::max(ans, BIT_A.sum(left..right)); h_now -= BIT_B.sum(left..right); } } writeln!(out, "{}", ans); } pub struct BinaryIndexedTree<T> { tree: Vec<T>, } impl<T: Default + Clone + Copy + std::ops::AddAssign + std::ops::Sub<Output = T>> BinaryIndexedTree<T> { /// self = [0; size] pub fn new(size: usize) -> Self { return Self { tree: vec![T::default(); size + 1], }; } /// self[i] <- self[i] + w pub fn add(&mut self, i: usize, w: T) { self._inner_add(i + 1, w); } /// return Σ_{j ∈ [0, i]} self[j] pub fn prefix_sum(&self, i: usize) -> T { self._inner_sum(i + 1) } /// return Σ_{j ∈ range} self[j] pub fn sum<R: std::ops::RangeBounds<usize>>(&self, range: R) -> T { let left = match range.start_bound() { std::ops::Bound::Included(&l) => l, std::ops::Bound::Excluded(&l) => l + 1, std::ops::Bound::Unbounded => 0, }; let right = match range.end_bound() { std::ops::Bound::Included(&r) => r, std::ops::Bound::Excluded(&r) => r - 1, std::ops::Bound::Unbounded => self.tree.len() - 2, }; if left == 0 { return self.prefix_sum(right); } else { return self.prefix_sum(right) - self.prefix_sum(left - 1); } } fn _inner_add(&mut self, mut i: usize, w: T) { while i < self.tree.len() { self.tree[i] += w; i += i & i.wrapping_neg(); } } fn _inner_sum(&self, mut i: usize) -> T { let mut ret = T::default(); while i > 0 { ret += self.tree[i]; i -= i & i.wrapping_neg(); } return ret; } } struct Scanner<R> { reader: R, buf_str: Vec<u8>, buf_iter: str::SplitWhitespace<'static>, } impl<R: BufRead> Scanner<R> { fn new(reader: R) -> Self { Self { reader, buf_str: vec![], buf_iter: "".split_whitespace(), } } fn token<T: str::FromStr>(&mut self) -> T { loop { if let Some(token) = self.buf_iter.next() { return token.parse().ok().expect("Failed parse"); } self.buf_str.clear(); self.reader .read_until(b'\n', &mut self.buf_str) .expect("Failed read"); self.buf_iter = unsafe { let slice = str::from_utf8_unchecked(&self.buf_str); std::mem::transmute(slice.split_whitespace()) } } } }