結果
問題 | No.1031 いたずら好きなお姉ちゃん |
ユーザー | koba-e964 |
提出日時 | 2020-04-26 03:01:57 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 78 ms / 3,500 ms |
コード長 | 5,790 bytes |
コンパイル時間 | 3,420 ms |
コンパイル使用メモリ | 183,624 KB |
実行使用メモリ | 19,968 KB |
最終ジャッジ日時 | 2024-04-26 07:10:34 |
合計ジャッジ時間 | 7,764 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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
6,816 KB |
testcase_01 | AC | 1 ms
6,944 KB |
testcase_02 | AC | 1 ms
6,944 KB |
testcase_03 | AC | 3 ms
6,940 KB |
testcase_04 | AC | 3 ms
6,944 KB |
testcase_05 | AC | 3 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 3 ms
6,940 KB |
testcase_08 | AC | 3 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 55 ms
15,360 KB |
testcase_12 | AC | 56 ms
15,360 KB |
testcase_13 | AC | 68 ms
18,304 KB |
testcase_14 | AC | 56 ms
16,000 KB |
testcase_15 | AC | 63 ms
17,280 KB |
testcase_16 | AC | 53 ms
15,232 KB |
testcase_17 | AC | 65 ms
17,280 KB |
testcase_18 | AC | 59 ms
16,768 KB |
testcase_19 | AC | 63 ms
17,536 KB |
testcase_20 | AC | 66 ms
18,432 KB |
testcase_21 | AC | 59 ms
16,768 KB |
testcase_22 | AC | 53 ms
15,232 KB |
testcase_23 | AC | 55 ms
15,616 KB |
testcase_24 | AC | 64 ms
17,536 KB |
testcase_25 | AC | 65 ms
18,176 KB |
testcase_26 | AC | 62 ms
17,024 KB |
testcase_27 | AC | 59 ms
16,000 KB |
testcase_28 | AC | 69 ms
18,304 KB |
testcase_29 | AC | 70 ms
18,432 KB |
testcase_30 | AC | 69 ms
18,176 KB |
testcase_31 | AC | 70 ms
18,432 KB |
testcase_32 | AC | 70 ms
18,304 KB |
testcase_33 | AC | 70 ms
18,304 KB |
testcase_34 | AC | 78 ms
19,968 KB |
testcase_35 | AC | 77 ms
18,816 KB |
testcase_36 | AC | 78 ms
19,072 KB |
testcase_37 | AC | 77 ms
19,328 KB |
testcase_38 | AC | 74 ms
18,432 KB |
testcase_39 | AC | 72 ms
18,176 KB |
testcase_40 | AC | 72 ms
18,176 KB |
testcase_41 | AC | 72 ms
18,560 KB |
testcase_42 | AC | 75 ms
18,432 KB |
testcase_43 | AC | 71 ms
18,304 KB |
testcase_44 | AC | 71 ms
18,048 KB |
testcase_45 | AC | 67 ms
17,664 KB |
testcase_46 | AC | 75 ms
18,944 KB |
testcase_47 | AC | 73 ms
18,432 KB |
testcase_48 | AC | 75 ms
19,200 KB |
testcase_49 | AC | 76 ms
18,816 KB |
testcase_50 | AC | 76 ms
18,944 KB |
testcase_51 | AC | 75 ms
19,072 KB |
testcase_52 | AC | 75 ms
19,200 KB |
testcase_53 | AC | 74 ms
19,328 KB |
testcase_54 | AC | 1 ms
6,940 KB |
testcase_55 | AC | 1 ms
6,940 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, ( $($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); (0..len).map(|_| read_value!($next, $t)).collect::<Vec<_>>() }}; ($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()); } /** * Sparse Table. * BiOp should be the type of a binary operator which is * associative, commutative and idempotent. * (For example, both min and gcd satisfy these properties.) * Verified by: AtCoder CODE FESTIVAL 2016 Tournament Round 3 (Parallel) B * (http://cf16-tournament-round3-open.contest.atcoder.jp/submissions/1026294) */ struct SparseTable<T, BiOp> { biop: BiOp, st: Vec<Vec<T>>, } impl<T, BiOp> SparseTable<T, BiOp> where BiOp: Fn(T, T) -> T, T: Copy { pub fn new(ary: &[T], biop: BiOp) -> Self { let n = ary.len(); let mut h = 1; while 1 << h < n { h += 1; } let mut st: Vec<Vec<T>> = vec![Vec::from(ary); h + 1]; for i in 0 .. n { st[0][i] = ary[i]; } for b in 1 .. (h + 1) { if n + 1 < 1 << b { break; } for i in 0 .. (n + 1 - (1 << b)) { let next_idx = (1 << (b - 1)) + i; st[b][i] = biop(st[b - 1][i], st[b - 1][next_idx]); } } SparseTable {biop: biop, st: st} } fn top_bit(t: usize) -> usize { let mut h = 0; while 1 << h <= t { h += 1; } h - 1 } pub fn query(&self, f: usize, s: usize) -> T { assert!(f <= s); let b = Self::top_bit(s + 1 - f); let endpoint = s + 1 - (1 << b); (self.biop)(self.st[b][f], self.st[b][endpoint]) } } fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts { ($($format:tt)*) => (let _ = write!(out,$($format)*);); } input! { n: usize, p: [usize; n], } let mut tot = 0i64; let spt = SparseTable::new(&p, min); let mut lohi = vec![(0, 0); n]; for i in 0..n { let mut fail = n; let mut pass = i; while fail - pass > 1 { let mid = (pass + fail) / 2; if spt.query(i, mid) < p[i] { fail = mid; } else { pass = mid; } } let hi = pass; // bias: -1 fail = 0; pass = i + 1; while pass - fail > 1 { let mid = (pass + fail) / 2; if spt.query(mid - 1, i) < p[i] { fail = mid; } else { pass = mid; } } let lo = pass - 1; lohi[i] = (lo, hi); } let mut st: Vec<(usize, usize)> = vec![]; // left -> right for i in 0..n { let lo = lohi[i].0; while let Some(x) = st.pop() { if x.0 > p[i] { st.push(x); break; } } // binsect bias = -1 let mut pass = st.len() + 1; let mut fail = 0; while pass - fail > 1 { let mid = (pass + fail) / 2; if st[mid - 1].1 >= lo { pass = mid; } else { fail = mid; } } tot += (st.len() + 1 - pass) as i64; st.push((p[i], i)); } // right -> left st.clear(); for i in (0..n).rev() { let hi = lohi[i].1; while let Some(x) = st.pop() { if x.0 > p[i] { st.push(x); break; } } // binsect bias = -1 let mut pass = st.len() + 1; let mut fail = 0; while pass - fail > 1 { let mid = (pass + fail) / 2; if st[mid - 1].1 <= hi { pass = mid; } else { fail = mid; } } tot += (st.len() + 1 - pass) as i64; st.push((p[i], i)); } puts!("{}\n", tot); } 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(); }