結果
問題 | No.1916 Making Palindrome on Gird |
ユーザー | phspls |
提出日時 | 2022-09-18 23:18:34 |
言語 | Rust (1.77.0 + proconio) |
結果 |
MLE
|
実行時間 | - |
コード長 | 2,996 bytes |
コンパイル時間 | 14,432 ms |
コンパイル使用メモリ | 390,816 KB |
実行使用メモリ | 793,088 KB |
最終ジャッジ日時 | 2024-06-01 15:49:50 |
合計ジャッジ時間 | 16,988 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 1 ms
5,376 KB |
testcase_02 | AC | 3 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 0 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 0 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | MLE | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
コンパイルメッセージ
warning: unused import: `HashMap` --> src/main.rs:1:24 | 1 | use std::collections::{HashMap, HashSet}; | ^^^^^^^ | = note: `#[warn(unused_imports)]` on by default
ソースコード
use std::collections::{HashMap, HashSet}; const MOD: usize = 1e9 as usize + 7; const SDX: [isize; 2] = [1, 0]; const SDY: [isize; 2] = [0, 1]; const EDX: [isize; 2] = [-1, 0]; const EDY: [isize; 2] = [0, -1]; fn main() { let mut hw = String::new(); std::io::stdin().read_line(&mut hw).ok(); let hw: Vec<usize> = hw.trim().split_whitespace().map(|s| s.parse().unwrap()).collect(); let h = hw[0]; let w = hw[1]; let grid = (0..h).map(|_| { let mut s = String::new(); std::io::stdin().read_line(&mut s).ok(); let s = s.trim(); s.chars().map(|c| c as usize - 'a' as usize).collect::<Vec<usize>>() }) .collect::<Vec<Vec<usize>>>(); if grid[0][0] != grid[h-1][w-1] { println!("0"); return; } let mut dp = vec![vec![vec![vec![0usize; w]; h]; w]; h]; let mut frontier = HashSet::new(); if (h+w) % 2 == 0 { for i in 0..h.min(w) { let x = if h > w { (h+w)/2-1-i } else { i }; let y = if w >= h { (h+w)/2-1-i } else { i }; dp[x][y][x][y] = 1; frontier.insert((x, y, x, y)); } } else { for i in 0..h.min(w) { let x = if h > w { (h+w)/2-1-i } else { i }; let y = if w >= h { (h+w)/2-1-i } else { i }; for dir in 0..2 { let nx = x as isize + SDX[dir]; let ny = y as isize + SDY[dir]; if nx >= 0 && ny >= 0 && nx < h as isize && ny < w as isize { let nx = nx as usize; let ny = ny as usize; if grid[x][y] == grid[nx][ny] { dp[x][y][nx][ny] = 1; frontier.insert((x, y, nx, ny)); } } } } } for _ in 0..(h+w)/2-1 { let mut next_frontier = HashSet::new(); for &(sx, sy, gx, gy) in frontier.iter() { for sdir in 0..2 { let nsx = sx as isize + EDX[sdir]; let nsy = sy as isize + EDY[sdir]; if !(nsx >= 0 && nsy >= 0 && nsx < h as isize && nsy < w as isize) { continue; } let nsx = nsx as usize; let nsy = nsy as usize; for gdir in 0..2 { let ngx = gx as isize + SDX[gdir]; let ngy = gy as isize + SDY[gdir]; if !(ngx >= 0 && ngy >= 0 && ngx < h as isize && ngy < w as isize) { continue; } let ngx = ngx as usize; let ngy = ngy as usize; if grid[nsx][nsy] == grid[ngx][ngy] { dp[nsx][nsy][ngx][ngy] += dp[sx][sy][gx][gy]; dp[nsx][nsy][ngx][ngy] %= MOD; next_frontier.insert((nsx, nsy, ngx, ngy)); } } } } frontier = next_frontier; } println!("{}", dp[0][0][h-1][w-1]); }