結果
問題 | No.422 文字列変更 (Hard) |
ユーザー | koba-e964 |
提出日時 | 2021-11-15 00:31:28 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 135 ms / 3,000 ms |
コード長 | 4,193 bytes |
コンパイル時間 | 15,669 ms |
コンパイル使用メモリ | 386,532 KB |
実行使用メモリ | 137,344 KB |
最終ジャッジ日時 | 2024-05-07 17:09:38 |
合計ジャッジ時間 | 15,805 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 102 ms
94,336 KB |
testcase_02 | AC | 110 ms
104,576 KB |
testcase_03 | AC | 94 ms
86,400 KB |
testcase_04 | AC | 106 ms
94,336 KB |
testcase_05 | AC | 120 ms
109,440 KB |
testcase_06 | AC | 135 ms
137,344 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 123 ms
125,184 KB |
testcase_10 | AC | 133 ms
133,248 KB |
testcase_11 | AC | 102 ms
96,256 KB |
testcase_12 | AC | 92 ms
84,864 KB |
testcase_13 | AC | 97 ms
89,088 KB |
testcase_14 | AC | 99 ms
91,392 KB |
testcase_15 | AC | 101 ms
92,416 KB |
testcase_16 | AC | 103 ms
95,744 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); read_value!($next, [$t; len]) }}; ($next:expr, $t:ty) => ($next().parse::<$t>().expect("Parse error")); } trait Change { fn chmax(&mut self, x: Self); fn chmin(&mut self, x: Self); } impl<T: PartialOrd> Change for T { fn chmax(&mut self, x: T) { if *self < x { *self = x; } } fn chmin(&mut self, x: T) { if *self > x { *self = x; } } } fn main() { // In order to avoid potential stack overflow, spawn a new thread. let stack_size = 104_857_600; // 100 MB let thd = std::thread::Builder::new().stack_size(stack_size); thd.spawn(|| solve()).unwrap().join().unwrap(); } fn solve() { let out = std::io::stdout(); let mut out = BufWriter::new(out.lock()); macro_rules! puts {($($format:tt)*) => (let _ = write!(out,$($format)*););} input! { n: usize, m: usize, s: chars, t: chars, } // mode: 0: replace 1: insert 2: delete const INF: i32 = 1 << 28; let mut dp = vec![vec![[(INF, 0, 0, 0); 3]; m + 1]; n + 1]; dp[0][0][0] = (0, 0, 0, 0); for i in 0..n + 1 { for j in 0..m + 1 { for _ in 0..2 { let val = (dp[i][j][0].0 + 7, i, j, 0); for k in 1..3 { dp[i][j][k].chmin(val); let val = (dp[i][j][k].0, i, j, k); dp[i][j][0].chmin(val); } } // 0: replace if i < n && j < m { let val = (dp[i][j][0].0 + if s[i] == t[j] { 0 } else { 5 }, i, j, 0); dp[i + 1][j + 1][0].chmin(val); } // 1: insert if j < m { let val = (dp[i][j][1].0 + 2, i, j, 1); dp[i][j + 1][1].chmin(val); } // 2: delete if i < n { let val = (dp[i][j][2].0 + 2, i, j, 2); dp[i + 1][j][2].chmin(val); } } } let (sc, _, _, _) = dp[n][m][0]; puts!("{}\n", sc); let mut x = n; let mut y = m; let mut z = 0; let mut rs = vec![]; let mut rt = vec![]; while (x, y, z) != (0, 0, 0) { let (_, nx, ny, nz) = dp[x][y][z]; if (nx, ny) == (x, y) { z = nz; continue; } assert_eq!(nz, z); match z { 0 => { rs.push(s[nx]); rt.push(t[ny]); } 1 => { rs.push('-'); rt.push(t[ny]); } 2 => { rs.push(s[nx]); rt.push('-'); } _ => panic!(), } x = nx; y = ny; } rs.reverse(); rt.reverse(); puts!("{}\n", rs.into_iter().collect::<String>()); puts!("{}\n", rt.into_iter().collect::<String>()); }