結果
| 問題 |
No.1638 Robot Maze
|
| コンテスト | |
| ユーザー |
fukafukatani
|
| 提出日時 | 2021-08-06 22:32:26 |
| 言語 | Rust (1.83.0 + proconio) |
| 結果 |
AC
|
| 実行時間 | 28 ms / 2,000 ms |
| コード長 | 2,788 bytes |
| コンパイル時間 | 14,080 ms |
| コンパイル使用メモリ | 395,916 KB |
| 実行使用メモリ | 6,948 KB |
| 最終ジャッジ日時 | 2024-09-17 02:36:21 |
| 合計ジャッジ時間 | 17,044 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge6 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 49 |
ソースコード
#![allow(unused_imports)]
use std::cmp::*;
use std::collections::*;
use std::io::Write;
use std::ops::Bound::*;
#[allow(unused_macros)]
macro_rules! debug {
($($e:expr),*) => {
#[cfg(debug_assertions)]
$({
let (e, mut err) = (stringify!($e), std::io::stderr());
writeln!(err, "{} = {:?}", e, $e).unwrap()
})*
};
}
fn main() {
let v = read_vec::<usize>();
let (h, w) = (v[0], v[1]);
let v = read_vec::<i64>();
let (u, d, r, l, k, p) = (v[0], v[1], v[2], v[3], v[4], v[5]);
let v = read_vec::<usize>();
let (xs, ys, xt, yt) = (v[0] - 1, v[1] - 1, v[2] - 1, v[3] - 1);
let mut grid = vec![vec![]; h];
for i in 0..h {
grid[i] = read::<String>().chars().collect::<Vec<_>>();
}
let to_index = |x, y| x + y * w;
let mut edges = vec![vec![]; w * h];
for y in 0..h {
for x in 0..w {
if grid[y][x] == '#' {
continue;
}
let cost = if grid[y][x] == '@' { p } else { 0 };
let cur = to_index(x, y);
if x > 0 {
let adj = to_index(x - 1, y);
edges[cur].push((adj, l + cost));
}
if y > 0 {
let adj = to_index(x, y - 1);
edges[cur].push((adj, u + cost));
}
if x < w - 1 {
let adj = to_index(x + 1, y);
edges[cur].push((adj, r + cost));
}
if y < h - 1 {
let adj = to_index(x, y + 1);
edges[cur].push((adj, d + cost));
}
}
}
let s = to_index(ys, xs);
let t = to_index(yt, xt);
let d = solve(&edges, s);
debug!(s, t, d);
if d[t] <= k {
println!("Yes");
} else {
println!("No");
}
}
fn read<T: std::str::FromStr>() -> T {
let mut s = String::new();
std::io::stdin().read_line(&mut s).ok();
s.trim().parse().ok().unwrap()
}
fn read_vec<T: std::str::FromStr>() -> Vec<T> {
read::<String>()
.split_whitespace()
.map(|e| e.parse().ok().unwrap())
.collect()
}
type Cost = i64;
const INF: Cost = 100000_00000_00000;
fn solve(edges: &Vec<Vec<(usize, Cost)>>, start_idx: usize) -> Vec<Cost> {
let num_apexes = edges.len();
let mut d = vec![INF; num_apexes];
d[start_idx] = 0;
let mut que = std::collections::BinaryHeap::new();
que.push((std::cmp::Reverse(0), start_idx));
while let Some((u, v)) = que.pop() {
if d[v] < u.0 {
continue;
}
for e in &edges[v] {
if d[v] != INF && d[e.0] > d[v] + e.1 {
d[e.0] = d[v] + e.1;
que.push((std::cmp::Reverse(d[e.0]), e.0));
}
}
}
d
}
fukafukatani