結果
問題 | No.1916 Making Palindrome on Gird |
ユーザー | phspls |
提出日時 | 2022-09-18 23:23:49 |
言語 | Rust (1.77.0 + proconio) |
結果 |
AC
|
実行時間 | 668 ms / 3,000 ms |
コード長 | 2,856 bytes |
コンパイル時間 | 16,263 ms |
コンパイル使用メモリ | 379,628 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-01 15:50:32 |
合計ジャッジ時間 | 22,755 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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
6,816 KB |
testcase_01 | AC | 1 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 1 ms
6,944 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 1 ms
6,944 KB |
testcase_06 | AC | 1 ms
6,940 KB |
testcase_07 | AC | 1 ms
6,940 KB |
testcase_08 | AC | 1 ms
6,940 KB |
testcase_09 | AC | 1 ms
6,940 KB |
testcase_10 | AC | 1 ms
6,944 KB |
testcase_11 | AC | 1 ms
6,944 KB |
testcase_12 | AC | 1 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,944 KB |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | AC | 51 ms
6,940 KB |
testcase_16 | AC | 28 ms
6,944 KB |
testcase_17 | AC | 100 ms
6,940 KB |
testcase_18 | AC | 260 ms
6,944 KB |
testcase_19 | AC | 254 ms
6,940 KB |
testcase_20 | AC | 262 ms
6,944 KB |
testcase_21 | AC | 264 ms
6,940 KB |
testcase_22 | AC | 269 ms
6,944 KB |
testcase_23 | AC | 2 ms
6,940 KB |
testcase_24 | AC | 1 ms
6,944 KB |
testcase_25 | AC | 1 ms
6,944 KB |
testcase_26 | AC | 2 ms
6,940 KB |
testcase_27 | AC | 1 ms
6,944 KB |
testcase_28 | AC | 655 ms
6,940 KB |
testcase_29 | AC | 668 ms
6,940 KB |
testcase_30 | AC | 653 ms
6,940 KB |
testcase_31 | AC | 652 ms
6,940 KB |
testcase_32 | AC | 651 ms
6,944 KB |
コンパイルメッセージ
warning: unused import: `HashSet` --> src/main.rs:1:33 | 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 = HashMap::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.insert((x, y, x, y), 1); } } 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.entry((x, y, nx, ny)).or_insert(0usize) += 1; } } } } } for _ in 0..(h+w)/2-1 { let mut next_dp = HashMap::new(); for (&(sx, sy, gx, gy), &cnt) in dp.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] { *next_dp.entry((nsx, nsy, ngx, ngy)).or_insert(0usize) += cnt; *next_dp.entry((nsx, nsy, ngx, ngy)).or_insert(0usize) %= MOD; } } } } dp = next_dp; } println!("{}", dp.get(&(0, 0, h-1, w-1)).unwrap_or(&0usize)); }