結果
問題 | No.852 連続部分文字列 |
ユーザー | koba-e964 |
提出日時 | 2019-07-27 11:24:51 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 20 ms / 3,153 ms |
コード長 | 2,603 bytes |
コンパイル時間 | 13,419 ms |
コンパイル使用メモリ | 378,408 KB |
実行使用メモリ | 17,184 KB |
最終ジャッジ日時 | 2024-07-02 10:49:35 |
合計ジャッジ時間 | 13,289 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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
6,812 KB |
testcase_01 | AC | 1 ms
6,944 KB |
testcase_02 | AC | 1 ms
6,940 KB |
testcase_03 | AC | 1 ms
6,940 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 0 ms
6,944 KB |
testcase_06 | AC | 1 ms
6,940 KB |
testcase_07 | AC | 1 ms
6,940 KB |
testcase_08 | AC | 1 ms
6,944 KB |
testcase_09 | AC | 0 ms
6,944 KB |
testcase_10 | AC | 1 ms
6,940 KB |
testcase_11 | AC | 0 ms
6,940 KB |
testcase_12 | AC | 0 ms
6,940 KB |
testcase_13 | AC | 1 ms
6,940 KB |
testcase_14 | AC | 1 ms
6,944 KB |
testcase_15 | AC | 2 ms
6,940 KB |
testcase_16 | AC | 2 ms
6,944 KB |
testcase_17 | AC | 1 ms
6,940 KB |
testcase_18 | AC | 2 ms
6,944 KB |
testcase_19 | AC | 1 ms
6,940 KB |
testcase_20 | AC | 1 ms
6,940 KB |
testcase_21 | AC | 2 ms
6,944 KB |
testcase_22 | AC | 1 ms
6,944 KB |
testcase_23 | AC | 1 ms
6,940 KB |
testcase_24 | AC | 1 ms
6,944 KB |
testcase_25 | AC | 2 ms
6,940 KB |
testcase_26 | AC | 2 ms
6,944 KB |
testcase_27 | AC | 1 ms
6,940 KB |
testcase_28 | AC | 2 ms
6,940 KB |
testcase_29 | AC | 2 ms
6,944 KB |
testcase_30 | AC | 1 ms
6,944 KB |
testcase_31 | AC | 1 ms
6,940 KB |
testcase_32 | AC | 2 ms
6,940 KB |
testcase_33 | AC | 20 ms
17,184 KB |
testcase_34 | AC | 20 ms
16,924 KB |
testcase_35 | AC | 19 ms
17,048 KB |
testcase_36 | AC | 20 ms
16,668 KB |
testcase_37 | AC | 19 ms
16,924 KB |
testcase_38 | AC | 19 ms
17,048 KB |
testcase_39 | AC | 19 ms
16,668 KB |
testcase_40 | AC | 19 ms
16,800 KB |
testcase_41 | AC | 19 ms
17,052 KB |
testcase_42 | AC | 19 ms
17,180 KB |
testcase_43 | AC | 18 ms
16,664 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") }; } fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts { ($($format:tt)*) => (write!(out,$($format)*).unwrap()); } input! { s: chars, } let n = s.len(); let nn = n as i64; let mut occ = vec![vec![]; 26]; for i in 0..26 { occ[i].push(0); } for i in 0..n { let idx = s[i] as usize - 97; occ[idx].push(i as i64 + 1); } for i in 0..26 { occ[i].push(nn + 1); } let mut tot = 0; for i in 0..26 { tot += nn * (nn + 1) / 2; for j in 0..occ[i].len() - 1 { let x = occ[i][j]; let y = occ[i][j + 1]; tot -= (y - x) * (y - x - 1) / 2; } } puts!("{}\n", tot as f64 / (nn * (nn + 1) / 2) as f64); } 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(); }