結果
問題 |
No.572 妖精の演奏
|
ユーザー |
|
提出日時 | 2017-10-12 14:17:14 |
言語 | Rust (1.83.0 + proconio) |
結果 |
AC
|
実行時間 | 5 ms / 2,000 ms |
コード長 | 2,986 bytes |
コンパイル時間 | 14,531 ms |
コンパイル使用メモリ | 378,412 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-11-17 10:49:35 |
合計ジャッジ時間 | 15,262 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
other | AC * 20 |
ソースコード
#[allow(unused_imports)] use std::cmp::{max, min}; #[allow(unused_imports)] use std::collections::{HashMap, HashSet}; mod util { use std::io::stdin; use std::str::FromStr; use std::fmt::Debug; #[allow(dead_code)] pub fn line() -> String { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); line.trim().to_string() } #[allow(dead_code)] pub fn get<T: FromStr>() -> T where <T as FromStr>::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); line.trim().parse().unwrap() } #[allow(dead_code)] pub fn gets<T: FromStr>() -> Vec<T> where <T as FromStr>::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); line.split_whitespace() .map(|t| t.parse().unwrap()) .collect() } #[allow(dead_code)] pub fn get2<T: FromStr, U: FromStr>() -> (T, U) where <T as FromStr>::Err: Debug, <U as FromStr>::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); let mut iter = line.split_whitespace(); ( iter.next().unwrap().parse().unwrap(), iter.next().unwrap().parse().unwrap(), ) } #[allow(dead_code)] pub fn get3<S: FromStr, T: FromStr, U: FromStr>() -> (S, T, U) where <S as FromStr>::Err: Debug, <T as FromStr>::Err: Debug, <U as FromStr>::Err: Debug, { let mut line: String = String::new(); stdin().read_line(&mut line).unwrap(); let mut iter = line.split_whitespace(); ( iter.next().unwrap().parse().unwrap(), iter.next().unwrap().parse().unwrap(), iter.next().unwrap().parse().unwrap(), ) } } #[allow(unused_macros)] macro_rules! debug { ($x: expr) => { println!("{}: {:?}", stringify!($x), $x) } } fn main() { let n: usize = util::get(); let m: usize = util::get(); let a: Vec<Vec<usize>> = (0..m).map(|_| util::gets()).collect(); let mut dp = vec![vec![vec![0; m]; m]; 40]; for i in 0..40 { for k in 0..m { for j in 0..m { if i == 0 { dp[i][k][j] = a[k][j]; } else { for h in 0..m { dp[i][k][j] = max(dp[i][k][j], dp[i - 1][k][h] + dp[i - 1][h][j]); } } } } } let mut dp2 = vec![0; m]; for i in 0..40 { if ((n - 1) >> i) & 1 != 1 { continue; } let mut next = vec![0; m]; for k in 0..m { for j in 0..m { next[k] = max(next[k], dp2[j] + dp[i][j][k]); } } dp2 = next; } println!("{}", dp2.iter().cloned().max().unwrap()) }