結果

問題 No.424 立体迷路
ユーザー naoshi65536naoshi65536
提出日時 2016-09-22 23:29:34
言語 C++11
(gcc 11.4.0)
結果
AC  
実行時間 13 ms / 2,000 ms
コード長 1,485 bytes
コンパイル時間 123 ms
コンパイル使用メモリ 24,576 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-07-05 07:06:14
合計ジャッジ時間 834 ms
ジャッジサーバーID
（参考情報） 		judge5 / 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
5,248 KB
testcase_01 AC 1 ms
5,376 KB
testcase_02 AC 1 ms
5,376 KB
testcase_03 AC 1 ms
5,376 KB
testcase_04 AC 1 ms
5,376 KB
testcase_05 AC 1 ms
5,376 KB
testcase_06 AC 1 ms
5,376 KB
testcase_07 AC 0 ms
5,376 KB
testcase_08 AC 1 ms
5,376 KB
testcase_09 AC 0 ms
5,376 KB
testcase_10 AC 0 ms
5,376 KB
testcase_11 AC 0 ms
5,376 KB
testcase_12 AC 0 ms
5,376 KB
testcase_13 AC 0 ms
5,376 KB
testcase_14 AC 0 ms
5,376 KB
testcase_15 AC 1 ms
5,376 KB
testcase_16 AC 0 ms
5,376 KB
testcase_17 AC 1 ms
5,376 KB
testcase_18 AC 1 ms
5,376 KB
testcase_19 AC 1 ms
5,376 KB
testcase_20 AC 0 ms
5,376 KB
testcase_21 AC 1 ms
5,376 KB
testcase_22 AC 1 ms
5,376 KB
testcase_23 AC 0 ms
5,376 KB
testcase_24 AC 13 ms
5,376 KB
testcase_25 AC 10 ms
5,376 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp:74:1: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type]
   74 | main()
      | ^~~~
main.cpp: In function ‘int main()’:
main.cpp:81:20: warning: ‘char* gets(char*)’ is deprecated [-Wdeprecated-declarations]
   81 |         while (gets(buf[n]) != NULL) {
      |                ~~~~^~~~~~~~
In file included from /usr/include/stdio.h:894,
                 from main.cpp:1:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:240:1: note: declared here
  240 | gets (char *__str)
      | ^~~~
main.cpp:78:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   78 |         scanf("%d %d\n", &h, &w);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~
main.cpp:79:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   79 |         scanf("%d %d %d %d\n", &sx, &sy, &gx, &gy);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:894,
                 from main.cpp:1:
In function ‘char* gets(char*)’,
    inlined from ‘int main()’ at main.cpp:81:13:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:244:22: warning: call to ‘__gets_warn’ declared with attribute warning: please use fgets or getline instead, gets can't specify buffer size [-Wattribute-warning]
  244 |   return __gets_warn (__str);
      |          ~~~~~~~~~~~~^~~~~~~
/usr/bin/ld: /tmp/ccFIONh8.o: in function `main':
main.cpp:(.text.startup+0x68): 警告: the `gets' function is dangerous and should not be used.

ソースコード

diff # 

#include <stdio.h>

char buf[50][100];
char visit[50][100];

int solve(int x, int y, int gx, int gy)
{
	int dx, dy;

	if (visit[y][x]) {
		return 0;
	}
	visit[y][x] = 1;

	fprintf(stderr, "in %d %d %d %d\n", x, y, gx, gy);
	if (x == gx && y == gy) {
		fprintf(stderr, "OK\n");
		return 1;
	}
	int base = buf[y][x];
	fprintf(stderr, "baseptr=%s\n", buf[y]);
	fprintf(stderr, "base = %c\n", base);

	if (base == 0) {
		fprintf(stderr, "fail\n");
		return 0;
	}
	int dxdy[4][2] = {
		{ -1, 0 },
		{ 1, 0 },
		{ 0, -1 },
		{ 0, 1 },
	};
	for (int i = 0; i < 4; i++) {
		dx = dxdy[i][0];
		dy = dxdy[i][1];

		int xx = x + dx;
		int yy = y + dy;
		if (xx < 0 || yy < 0 || xx >= 50 || yy >= 50) {
			continue;
		}
		int c = buf[yy][xx];
		if (c == base - 1 || c == base + 1 || c == base) {
			if (solve(xx, yy, gx, gy)) {
				fprintf(stderr, "solved\n");
				return 1;
			}
		}

		xx = x + dx * 2;
		yy = y + dy * 2;
		if (xx < 0 || yy < 0 || xx >= 50 || yy >= 50) {
			continue;
		}
		int xx2 = x + dx;
		int yy2 = y + dy;

		c = buf[yy2][xx2];
		if (c >= base) {
			continue;
		}
		c = buf[yy][xx];
		if (c == base) {
			if (solve(xx, yy, gx, gy)) {
				fprintf(stderr, "solved\n");
				return 1;
			}
		}
	}
	return 0;
}

main()
{
	int w, h, sx, sy, gx, gy;

	scanf("%d %d\n", &h, &w);
	scanf("%d %d %d %d\n", &sx, &sy, &gx, &gy);
	int n = 0;
	while (gets(buf[n]) != NULL) {
		n++;
	}

	sx--;
	sy--;
	gx--;
	gy--;
	if (solve(sy, sx, gy, gx)) {
		puts("YES");
	} else {
		puts("NO");
	}
}
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