結果
| 問題 | 
                            No.424 立体迷路
                             | 
                    
| コンテスト | |
| ユーザー | 
                             | 
                    
| 提出日時 | 2016-09-22 23:05:35 | 
| 言語 | C++11(廃止可能性あり)  (gcc 13.3.0)  | 
                    
| 結果 | 
                             
                                AC
                                 
                             
                            
                         | 
                    
| 実行時間 | 2 ms / 2,000 ms | 
| コード長 | 2,046 bytes | 
| コンパイル時間 | 516 ms | 
| コンパイル使用メモリ | 49,408 KB | 
| 実行使用メモリ | 5,248 KB | 
| 最終ジャッジ日時 | 2024-11-17 15:05:35 | 
| 合計ジャッジ時間 | 987 ms | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge3 / judge5 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 5 | 
| other | AC * 21 | 
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:20:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   20 |         scanf("%d %d", &H, &W);
      |         ~~~~~^~~~~~~~~~~~~~~~~
main.cpp:21:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   21 |         scanf("%d %d %d %d", &now.first, &now.second, &goal.first, &goal.second);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
main.cpp:23:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   23 |                 scanf("%s", hei[i]);
      |                 ~~~~~^~~~~~~~~~~~~~
            
            ソースコード
#include "stdio.h"
#include "queue"
#include "utility"
#include "math.h"
using namespace std;
typedef pair<int, int>P;
P now;
P goal;
P box;
int H, W;
char hei[51][51];
int height[51][51];
int dx[8] = { 1,0,-1,0,2,0,-2,0 };
int dy[8] = { 0,-1,0,1,0,-2,0,2 };
queue <P> Q;
int dis[51][51];
int main() {
	scanf("%d %d", &H, &W);
	scanf("%d %d %d %d", &now.first, &now.second, &goal.first, &goal.second);
	for (int i = 1; i <= H; i++) {
		scanf("%s", hei[i]);
	}
	for (int i = 1; i <= H; i++) {
		for (int j = W; j >= 1; j--) {
			hei[i][j] = hei[i][j - 1];
			height[i][j] = hei[i][j] - '0';
			//printf("%d", height[i][j]);
		}
	}
	Q.push(now);
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) {
			dis[i][j] = 10000;
		}
	}
	dis[now.first][now.second] = 0;
	while (!Q.empty()) {
		now = Q.front();
	//	printf("%d %dを調べる\n", now.first, now.second);
		for (int i = 0; i < 8; i++) {
			if (now.first + dy[i] >= 1 && now.first + dy[i] <= H&&now.second + dx[i] >= 1 && now.second + dx[i] <= W) {
				if (i < 4) {
					if (abs(height[now.first][now.second] - height[now.first + dy[i]][now.second + dx[i]])<2) {
						if (dis[now.first][now.second] + 1 < dis[now.first + dy[i]][now.second + dx[i]]) {
							dis[now.first + dy[i]][now.second + dx[i]] = dis[now.first][now.second] + 1;
							box.first = now.first + dy[i];
							box.second = now.second + dx[i];
							Q.push(box);
						}
					}
				}
				else {
					if (height[now.first][now.second] == height[now.first + dy[i]][now.second + dx[i]]) {
						if (height[now.first][now.second] > height[now.first + dy[i] / 2][now.second + dx[i] / 2]) {
							if (dis[now.first][now.second] + 1 < dis[now.first + dy[i]][now.second + dx[i]]) {
								dis[now.first + dy[i]][now.second + dx[i]] = dis[now.first][now.second] + 1;
								box.first = now.first + dy[i];
								box.second = now.second + dx[i];
								Q.push(box);
							}
						}
					}
				}
			}
		}
		Q.pop();
	}
	if (dis[goal.first][goal.second] != 10000)printf("YES\n");
	else printf("NO\n");
	return 0;
}