結果
問題 | No.1283 Extra Fee |
ユーザー | Strorkis |
提出日時 | 2020-11-06 22:59:15 |
言語 | Rust (1.77.0) |
結果 |
AC
|
実行時間 | 178 ms / 2,000 ms |
コード長 | 3,029 bytes |
コンパイル時間 | 12,464 ms |
コンパイル使用メモリ | 390,044 KB |
実行使用メモリ | 26,012 KB |
最終ジャッジ日時 | 2024-04-27 23:25:05 |
合計ジャッジ時間 | 16,392 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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
6,944 KB |
testcase_05 | AC | 1 ms
6,940 KB |
testcase_06 | AC | 1 ms
6,944 KB |
testcase_07 | AC | 1 ms
6,944 KB |
testcase_08 | AC | 1 ms
6,944 KB |
testcase_09 | AC | 1 ms
6,944 KB |
testcase_10 | AC | 1 ms
6,944 KB |
testcase_11 | AC | 6 ms
6,944 KB |
testcase_12 | AC | 8 ms
6,940 KB |
testcase_13 | AC | 5 ms
6,944 KB |
testcase_14 | AC | 25 ms
6,940 KB |
testcase_15 | AC | 44 ms
8,448 KB |
testcase_16 | AC | 8 ms
6,940 KB |
testcase_17 | AC | 167 ms
23,956 KB |
testcase_18 | AC | 156 ms
23,540 KB |
testcase_19 | AC | 165 ms
24,576 KB |
testcase_20 | AC | 150 ms
23,172 KB |
testcase_21 | AC | 152 ms
23,476 KB |
testcase_22 | AC | 136 ms
21,156 KB |
testcase_23 | AC | 151 ms
25,412 KB |
testcase_24 | AC | 163 ms
25,416 KB |
testcase_25 | AC | 168 ms
25,276 KB |
testcase_26 | AC | 169 ms
25,360 KB |
testcase_27 | AC | 170 ms
25,320 KB |
testcase_28 | AC | 170 ms
25,300 KB |
testcase_29 | AC | 178 ms
26,012 KB |
ソースコード
pub mod procon_input { use std::{str::FromStr, iter::FromIterator}; pub fn read_line() -> String { let mut input = String::new(); std::io::stdin().read_line(&mut input).ok(); input } pub fn parse<T: FromStr>(s: &str) -> T { s.parse().ok().unwrap() } pub fn read<T: FromStr>() -> T { parse(read_line().trim_end()) } pub fn read_collection<T: FromStr, C: FromIterator<T>>() -> C { read_line().split_whitespace().map(parse).collect() } #[macro_export] macro_rules! read_tuple { ( $( $t:ty ),* ) => {{ let input = read_line(); let mut iter = input.split_whitespace(); ( $( parse::<$t>(iter.next().unwrap()) ),* ) }}; } } use procon_input::*; fn dijkstra( graph: &Vec<Vec<usize>>, tolls: &Vec<i64>, s: usize ) -> Vec<i64> { use std::collections::BinaryHeap; use std::cmp::Reverse; let n = graph.len(); let mut heap = BinaryHeap::new(); let mut dist = vec![1 << 60; n]; heap.push((Reverse(tolls[s]), s)); dist[s] = tolls[s]; while let Some((Reverse(cost), from)) = heap.pop() { for &to in &graph[from] { let next_cost = cost + 1 + tolls[to]; if next_cost < dist[to] { heap.push((Reverse(next_cost), to)); dist[to] = next_cost; } } } dist } fn solve(writer: &mut std::io::BufWriter<std::io::StdoutLock>) { use std::io::Write; let (n, m) = read_tuple!(usize, usize); let mut graph = vec![vec![]; n * n]; for h in 0..n { for w in 0..n { let u = h * n + w; if w + 1 < n { let v = h * n + (w + 1); graph[u].push(v); graph[v].push(u); } if h + 1 < n { let v = (h + 1) * n + w; graph[u].push(v); graph[v].push(u); } } } let mut tolls = vec![0; n * n]; for _ in 0..m { let (h, w, c) = read_tuple!(usize, usize, i64); tolls[(h - 1) * n + (w - 1)] = c; } let dist_start = dijkstra(&graph, &tolls, 0); let dist_goal = dijkstra(&graph, &tolls, n * n - 1); let mut ans = dist_start[n * n - 1]; for x in 0..(n * n) { if tolls[x] == 0 { continue; } use std::cmp::min; let mut prev = std::i64::MAX; if x % n > 0 { prev = min(prev, dist_start[x - 1]); } if x / n > 0 { prev = min(prev, dist_start[x - n]) } let mut next = std::i64::MAX; if x % n + 1 < n { next = min(next, dist_goal[x + 1]); } if x / n + 1 < n { next = min(next, dist_goal[x + n]); } ans = min(ans, prev + next + 2); } writeln!(writer, "{}", ans).ok(); } fn main() { let stdout = std::io::stdout(); let mut writer = std::io::BufWriter::new(stdout.lock()); solve(&mut writer); }