結果
問題 | No.2142 Segment Zero |
ユーザー | akakimidori |
提出日時 | 2022-12-02 23:29:30 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 61 ms / 2,000 ms |
コード長 | 4,785 bytes |
コンパイル時間 | 13,496 ms |
コンパイル使用メモリ | 379,504 KB |
実行使用メモリ | 9,732 KB |
最終ジャッジ日時 | 2024-10-10 01:59:33 |
合計ジャッジ時間 | 14,260 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 27 ms
9,732 KB |
testcase_02 | AC | 1 ms
6,820 KB |
testcase_03 | AC | 61 ms
9,656 KB |
testcase_04 | AC | 59 ms
9,676 KB |
testcase_05 | AC | 59 ms
9,624 KB |
testcase_06 | AC | 1 ms
6,816 KB |
testcase_07 | AC | 58 ms
9,716 KB |
testcase_08 | AC | 28 ms
9,704 KB |
testcase_09 | AC | 50 ms
9,704 KB |
testcase_10 | AC | 28 ms
9,604 KB |
testcase_11 | AC | 28 ms
9,516 KB |
testcase_12 | AC | 27 ms
9,700 KB |
testcase_13 | AC | 28 ms
9,600 KB |
testcase_14 | AC | 28 ms
9,524 KB |
testcase_15 | AC | 28 ms
9,712 KB |
testcase_16 | AC | 28 ms
9,588 KB |
testcase_17 | AC | 24 ms
8,184 KB |
testcase_18 | AC | 15 ms
6,816 KB |
testcase_19 | AC | 12 ms
6,816 KB |
testcase_20 | AC | 17 ms
6,820 KB |
testcase_21 | AC | 36 ms
6,820 KB |
testcase_22 | AC | 22 ms
7,456 KB |
testcase_23 | AC | 7 ms
6,820 KB |
testcase_24 | AC | 10 ms
6,816 KB |
testcase_25 | AC | 21 ms
6,816 KB |
testcase_26 | AC | 33 ms
7,276 KB |
testcase_27 | AC | 43 ms
7,572 KB |
testcase_28 | AC | 13 ms
6,816 KB |
testcase_29 | AC | 17 ms
6,816 KB |
testcase_30 | AC | 21 ms
7,468 KB |
testcase_31 | AC | 44 ms
7,264 KB |
testcase_32 | AC | 15 ms
6,820 KB |
testcase_33 | AC | 5 ms
6,816 KB |
testcase_34 | AC | 19 ms
6,816 KB |
testcase_35 | AC | 27 ms
9,532 KB |
testcase_36 | AC | 8 ms
6,820 KB |
ソースコード
fn main() { input!(n: usize, k: usize); let mut a = vec![0; n + 1]; for i in 1..=n { a[i] = i + a[i - 1]; } let mut ans = 2; for l in 0..n { let t = a[l] + a[n] - k; let x = a.lower_bound(&t); if x < a.len() && a[x] == t { ans = 1; } } println!("{}", ans); } // ---------- 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 ---------- // ---------- begin super slice ---------- pub trait SuperSlice { type Item; fn lower_bound(&self, key: &Self::Item) -> usize where Self::Item: Ord; fn lower_bound_by<F>(&self, f: F) -> usize where F: FnMut(&Self::Item) -> std::cmp::Ordering; fn lower_bound_by_key<K, F>(&self, key: &K, f: F) -> usize where K: Ord, F: FnMut(&Self::Item) -> K; fn upper_bound(&self, key: &Self::Item) -> usize where Self::Item: Ord; fn upper_bound_by<F>(&self, f: F) -> usize where F: FnMut(&Self::Item) -> std::cmp::Ordering; fn upper_bound_by_key<K, F>(&self, key: &K, f: F) -> usize where K: Ord, F: FnMut(&Self::Item) -> K; fn next_permutation(&mut self) -> bool where Self::Item: Ord; fn next_permutation_by<F>(&mut self, f: F) -> bool where F: FnMut(&Self::Item, &Self::Item) -> std::cmp::Ordering; fn prev_permutation(&mut self) -> bool where Self::Item: Ord; } impl<T> SuperSlice for [T] { type Item = T; fn lower_bound(&self, key: &Self::Item) -> usize where T: Ord, { self.lower_bound_by(|p| p.cmp(key)) } fn lower_bound_by<F>(&self, mut f: F) -> usize where F: FnMut(&Self::Item) -> std::cmp::Ordering, { self.binary_search_by(|p| f(p).then(std::cmp::Ordering::Greater)) .unwrap_err() } fn lower_bound_by_key<K, F>(&self, key: &K, mut f: F) -> usize where K: Ord, F: FnMut(&Self::Item) -> K, { self.lower_bound_by(|p| f(p).cmp(key)) } fn upper_bound(&self, key: &Self::Item) -> usize where T: Ord, { self.upper_bound_by(|p| p.cmp(key)) } fn upper_bound_by<F>(&self, mut f: F) -> usize where F: FnMut(&Self::Item) -> std::cmp::Ordering, { self.binary_search_by(|p| f(p).then(std::cmp::Ordering::Less)) .unwrap_err() } fn upper_bound_by_key<K, F>(&self, key: &K, mut f: F) -> usize where K: Ord, F: FnMut(&Self::Item) -> K, { self.upper_bound_by(|p| f(p).cmp(key)) } fn next_permutation(&mut self) -> bool where T: Ord, { self.next_permutation_by(|a, b| a.cmp(b)) } fn next_permutation_by<F>(&mut self, mut f: F) -> bool where F: FnMut(&Self::Item, &Self::Item) -> std::cmp::Ordering, { use std::cmp::Ordering::*; if let Some(x) = self.windows(2).rposition(|a| f(&a[0], &a[1]) == Less) { let y = self.iter().rposition(|b| f(&self[x], b) == Less).unwrap(); self.swap(x, y); self[(x + 1)..].reverse(); true } else { self.reverse(); false } } fn prev_permutation(&mut self) -> bool where T: Ord, { self.next_permutation_by(|a, b| a.cmp(b).reverse()) } } // ---------- end super slice ----------