結果
| 問題 |
No.124 門松列(3)
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2021-05-19 17:07:40 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,430 bytes |
| コンパイル時間 | 2,609 ms |
| コンパイル使用メモリ | 82,356 KB |
| 実行使用メモリ | 57,072 KB |
| 最終ジャッジ日時 | 2024-10-09 20:55:26 |
| 合計ジャッジ時間 | 5,430 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 18 WA * 8 |
ソースコード
import java.io.*;
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int h = sc.nextInt();
int w = sc.nextInt();
int[][] field = new int[h][w];
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
field[i][j] = sc.nextInt();
}
}
PriorityQueue<Path> queue = new PriorityQueue<>();
int[][][][] costs = new int[10][10][h][w];
for (int[][][] arr1 : costs) {
for (int[][] arr2 : arr1) {
for (int[] arr3 : arr2) {
Arrays.fill(arr3, Integer.MAX_VALUE);
}
}
}
queue.add(new Path(0, 0, 0, 0, 0));
while (queue.size() > 0) {
Path p = queue.poll();
if (!isKadomatsu(p.prepre, p.pre, field[p.r][p.c]) || costs[p.prepre][p.pre][p.r][p.c] <= p.value) {
continue;
}
costs[p.prepre][p.pre][p.r][p.c] = p.value;
if (p.r > 0) {
queue.add(new Path(p.r - 1, p.c, p.value + 1, p.pre, field[p.r][p.c]));
}
if (p.r < h - 1) {
queue.add(new Path(p.r + 1, p.c, p.value + 1, p.pre, field[p.r][p.c]));
}
if (p.c > 0) {
queue.add(new Path(p.r, p.c - 1, p.value + 1, p.pre, field[p.r][p.c]));
}
if (p.c < w - 1) {
queue.add(new Path(p.r, p.c + 1, p.value + 1, p.pre, field[p.r][p.c]));
}
}
int min = Integer.MAX_VALUE;
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 10; j++) {
min = Math.min(min, costs[i][j][h - 1][w - 1]);
}
}
if (min == Integer.MAX_VALUE) {
System.out.println(-1);
} else {
System.out.println(min);
}
}
static boolean isKadomatsu(int prepre, int pre, int cur) {
if (pre == 0) {
return true;
} else if (prepre == 0) {
return pre != cur;
} else {
return prepre != cur && ((prepre < pre && pre > cur) || (prepre > pre && pre < cur));
}
}
static class Path implements Comparable<Path> {
int r;
int c;
int value;
int prepre;
int pre;
public Path(int r, int c, int value, int prepre, int pre) {
this.r = r;
this.c = c;
this.value = value;
this.prepre = prepre;
this.pre = pre;
}
public int compareTo(Path another) {
return value - another.value;
}
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public String next() throws Exception {
if (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
tenten