結果
| 問題 | No.572 妖精の演奏 |
| コンテスト | |
| 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 |
| 記録 | |
| 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 |
(要ログイン)
| 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())
}