시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
2 초 128 MB 27 4 4 14.815%

문제

드록바와 셰브첸코가 첼시에서 같이 훈련하던 옛날 옛적 어느날 두 선수는 훈련에 지쳐 다음과 같은 게임을 하며 쉬기로 한다.

편의상 두 플레이어를 A, B라고 부를 때, 두 플레이어는 N*N짜리 정사각형 보드의 한 점에서 시작하게 된다.

그래서 A, B는 각각 시작점을 가지게 되고 보드에는 흰 칸과 검은 칸이 있는데 검은 칸은 지나가지 못하는 칸이다.(물론 A, B의 시작점과 검은 칸이 겹치는 경우는 없다.)

플레이어들은 각 턴마다 상, 하, 좌, 우로 한 번씩 움직일 수 있다. 그리고 만약 플레이어가 움직여서 상대방의 현 위치와 겹치게 되면 그 플레이어는 상, 하, 좌, 우중 한 방향으로 한 번 더 움직일 수 있는 기회를 받는다.

A플레이어가 먼저 턴을 시작한다고 할 때 상대방의 시작점으로 먼저 도착하는 사람이 경기의 승자가 된다. 양 선수는 최선의 전략을 사용한다고 가정할 때 누가 승자가 될지 알아 보아라.

입력

첫째 줄에는 테스트 데이터의 개수 t (1<=t<=10)가 들어온다. 그리고 다음 t개의 세트에는 우선 맵의 크기 n(1<=n<=300)이 주어지고 다음에는 N*N짜리 지도가 주어지는데 A의 위치와 B의 위치가 표시되어있고 흰자리는 ‘.’, 검은 자리는 ‘#’으로 표시되어있다.

출력

누가 승리할지 테스트 케이스 순서대로 출력하여라.

예제 입력 1

2
4
A...
.#..
....
...B
4
A...
....
..#.
...B

예제 출력 1

B
A

힌트

첫 번째 테스트 케이스의 경우인데 A가 어떤 방향으로 움직이던 B가 따라가게 된다면 A가 3칸을 움직이고 B가 3칸째 움직이게 될 때 A의 위치와 겹칠 수 있고 그때 B가 한 번의 추가 움직임을 허용 받아 더 먼저 상대의 시작장소로 갈 수 있다. 이는 두 번째 테스트 케이스의 경우인데 이 경우 B가 어떻게 가던 A가 피해간다면 만나지 않을 수 있고 서로 만나지 않는다면 먼저 시작한 A가 승리할 수 있다.
[{"problem_id":"1191","problem_lang":"0","title":"\uac8c\uc784","description":"<p>\ub4dc\ub85d\ubc14\uc640 \uc170\ube0c\uccb8\ucf54\uac00 \uccbc\uc2dc\uc5d0\uc11c \uac19\uc774 \ud6c8\ub828\ud558\ub358 \uc61b\ub0a0 \uc61b\uc801 \uc5b4\ub290\ub0a0 \ub450 \uc120\uc218\ub294 \ud6c8\ub828\uc5d0 \uc9c0\uccd0 \ub2e4\uc74c\uacfc \uac19\uc740 \uac8c\uc784\uc744 \ud558\uba70 \uc26c\uae30\ub85c \ud55c\ub2e4.<\/p>\r\n<p>\ud3b8\uc758\uc0c1 \ub450 \ud50c\ub808\uc774\uc5b4\ub97c A, B\ub77c\uace0 \ubd80\ub97c \ub54c, \ub450 \ud50c\ub808\uc774\uc5b4\ub294 N*N\uc9dc\ub9ac \uc815\uc0ac\uac01\ud615 \ubcf4\ub4dc\uc758 \ud55c \uc810\uc5d0\uc11c \uc2dc\uc791\ud558\uac8c \ub41c\ub2e4.<\/p>\r\n<p>\uadf8\ub798\uc11c A, B\ub294 \uac01\uac01 \uc2dc\uc791\uc810\uc744 \uac00\uc9c0\uac8c \ub418\uace0 \ubcf4\ub4dc\uc5d0\ub294 \ud770 \uce78\uacfc \uac80\uc740 \uce78\uc774 \uc788\ub294\ub370 \uac80\uc740 \uce78\uc740 \uc9c0\ub098\uac00\uc9c0 \ubabb\ud558\ub294 \uce78\uc774\ub2e4.(\ubb3c\ub860 A, B\uc758 \uc2dc\uc791\uc810\uacfc \uac80\uc740 \uce78\uc774 \uacb9\uce58\ub294 \uacbd\uc6b0\ub294 \uc5c6\ub2e4.)<\/p>\r\n<p>\ud50c\ub808\uc774\uc5b4\ub4e4\uc740 \uac01 \ud134\ub9c8\ub2e4 \uc0c1, \ud558, \uc88c, \uc6b0\ub85c \ud55c \ubc88\uc529 \uc6c0\uc9c1\uc77c \uc218 \uc788\ub2e4. \uadf8\ub9ac\uace0 \ub9cc\uc57d \ud50c\ub808\uc774\uc5b4\uac00 \uc6c0\uc9c1\uc5ec\uc11c \uc0c1\ub300\ubc29\uc758 \ud604 \uc704\uce58\uc640 \uacb9\uce58\uac8c \ub418\uba74 \uadf8 \ud50c\ub808\uc774\uc5b4\ub294 \uc0c1, \ud558, \uc88c, \uc6b0\uc911 \ud55c \ubc29\ud5a5\uc73c\ub85c \ud55c \ubc88 \ub354 \uc6c0\uc9c1\uc77c \uc218 \uc788\ub294 \uae30\ud68c\ub97c \ubc1b\ub294\ub2e4.<\/p>\r\n<p>A\ud50c\ub808\uc774\uc5b4\uac00 \uba3c\uc800 \ud134\uc744 \uc2dc\uc791\ud55c\ub2e4\uace0 \ud560 \ub54c \uc0c1\ub300\ubc29\uc758 \uc2dc\uc791\uc810\uc73c\ub85c \uba3c\uc800 \ub3c4\ucc29\ud558\ub294 \uc0ac\ub78c\uc774 \uacbd\uae30\uc758 \uc2b9\uc790\uac00 \ub41c\ub2e4. \uc591 \uc120\uc218\ub294 \ucd5c\uc120\uc758 \uc804\ub7b5\uc744 \uc0ac\uc6a9\ud55c\ub2e4\uace0 \uac00\uc815\ud560 \ub54c \ub204\uac00 \uc2b9\uc790\uac00 \ub420\uc9c0 \uc54c\uc544 \ubcf4\uc544\ub77c.<\/p>","input":"<p>\uccab\uc9f8 \uc904\uc5d0\ub294 \ud14c\uc2a4\ud2b8 \ub370\uc774\ud130\uc758 \uac1c\uc218 t (1&lt;=t&lt;=10)\uac00 \ub4e4\uc5b4\uc628\ub2e4. \uadf8\ub9ac\uace0 \ub2e4\uc74c t\uac1c\uc758 \uc138\ud2b8\uc5d0\ub294 \uc6b0\uc120 \ub9f5\uc758 \ud06c\uae30 n(1&lt;=n&lt;=300)\uc774 \uc8fc\uc5b4\uc9c0\uace0 \ub2e4\uc74c\uc5d0\ub294 N*N\uc9dc\ub9ac \uc9c0\ub3c4\uac00 \uc8fc\uc5b4\uc9c0\ub294\ub370 A\uc758 \uc704\uce58\uc640 B\uc758 \uc704\uce58\uac00 \ud45c\uc2dc\ub418\uc5b4\uc788\uace0 \ud770\uc790\ub9ac\ub294 &lsquo;.&rsquo;, \uac80\uc740 \uc790\ub9ac\ub294 &lsquo;#&rsquo;\uc73c\ub85c \ud45c\uc2dc\ub418\uc5b4\uc788\ub2e4.<\/p>","output":"<p>\ub204\uac00 \uc2b9\ub9ac\ud560\uc9c0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4 \uc21c\uc11c\ub300\ub85c \ucd9c\ub825\ud558\uc5ec\ub77c.<\/p>","hint":"\uccab \ubc88\uc9f8 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uacbd\uc6b0\uc778\ub370 A\uac00 \uc5b4\ub5a4 \ubc29\ud5a5\uc73c\ub85c \uc6c0\uc9c1\uc774\ub358 B\uac00 \ub530\ub77c\uac00\uac8c \ub41c\ub2e4\uba74 A\uac00 3\uce78\uc744 \uc6c0\uc9c1\uc774\uace0 B\uac00 3\uce78\uc9f8 \uc6c0\uc9c1\uc774\uac8c \ub420 \ub54c A\uc758 \uc704\uce58\uc640 \uacb9\uce60 \uc218 \uc788\uace0 \uadf8\ub54c B\uac00 \ud55c \ubc88\uc758 \ucd94\uac00 \uc6c0\uc9c1\uc784\uc744 \ud5c8\uc6a9 \ubc1b\uc544 \ub354 \uba3c\uc800 \uc0c1\ub300\uc758 \uc2dc\uc791\uc7a5\uc18c\ub85c \uac08 \uc218 \uc788\ub2e4.\r\n\r\n\uc774\ub294 \ub450 \ubc88\uc9f8 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uacbd\uc6b0\uc778\ub370 \uc774 \uacbd\uc6b0 B\uac00 \uc5b4\ub5bb\uac8c \uac00\ub358 A\uac00 \ud53c\ud574\uac04\ub2e4\uba74 \ub9cc\ub098\uc9c0 \uc54a\uc744 \uc218 \uc788\uace0 \uc11c\ub85c \ub9cc\ub098\uc9c0 \uc54a\ub294\ub2e4\uba74 \uba3c\uc800 \uc2dc\uc791\ud55c A\uac00 \uc2b9\ub9ac\ud560 \uc218 \uc788\ub2e4.\r\n","original":"0","problem_lang_code":"\ud55c\uad6d\uc5b4"},{"problem_id":"1191","problem_lang":"1","title":"Game","description":"<p>Two players, A and B, play a game on a square board of size n &times; n. The squares of the board are either white or black. The game is played only on the white squares &mdash; the black ones are excluded from the game. Each player has one piece, initially placed at this player&rsquo;s starting point &mdash; one of the white squares on the board. The starting point of A is di\ufb00erent than that of B.<\/p>\r\n\r\n<p>In each move a player moves his piece to one of the neighboring white squares (either up, down, left or right). If the player moves his piece to the square currently occupied by his opponent&rsquo;s piece, he gets an extra move (this way he jumps over the opponent). Note that in this case the direction of the second move can be di\ufb00erent than that of the \ufb01rst move.<\/p>\r\n\r\n<p>Player A moves \ufb01rst, then players alternate. The goal of the game is to reach the opponent&rsquo;s starting point. The player whose piece reaches his opponent&rsquo;s starting point \ufb01rst, wins the game. Even if the player&rsquo;s last move consists of two jumps, and he only jumps over his opponent&rsquo;s starting point (since it is occupied by his opponent), the player wins. We want to determine which player has a winning strategy (a player has a winning strategy if he can win regardless of his opponent&rsquo;s moves).<\/p>\r\n\r\n<p><img alt=\"\" src=\"\/upload\/images\/game1.png\" style=\"height:150px; width:150px\" \/><\/p>\r\n\r\n<p>Figure 1. If A moves to the right on his \ufb01rst three moves, B will move up the \ufb01rst three moves. Thus, on the third move player B will reach the square with A&rsquo;s piece and will be allowed to move again. Because of this, B will reach A&rsquo;s starting point \ufb01rst and will win the game.<\/p>\r\n\r\n<p><img alt=\"\" src=\"\/upload\/images\/game2.png\" style=\"height:154px; width:150px\" \/><\/p>\r\n\r\n<p>Figure 2. A can start by moving one step to the right and one step down. Then, depending on the \ufb01rst two moves of B, he will either go down or right and evade B. This way A will reach B&rsquo;s starting point \ufb01rst, thus winning the game. In fact we proved that A has a winning strategy.<\/p>\r\n\r\n<p>Write a program, that:<\/p>\r\n\r\n<ul>\r\n\t<li>reads the layout of the grid and the starting points of the two players from the standard input,<\/li>\r\n\t<li>\ufb01nds the player who has a winning strategy,<\/li>\r\n\t<li>writes the result to the standard output.<\/li>\r\n<\/ul>\r\n","input":"<p>The \ufb01rst line of the standard input contains one integer t the number of test cases (1 &le; t &le; 10 ). After it the description of t tests appears. Each test is described as follows. In the \ufb01rst line of the test there is one integer n (2 &le; n &le; 300 ), the length of the side of the grid. Then next n lines contain the description of the grid. Each line consists of n characters (with no whitespaces between them). Each character is either &rsquo;.&rsquo; (a white square), &rsquo;#&rsquo; (a black square), &rsquo;A&rsquo; (the starting point of A) or &rsquo;B&rsquo; (the starting point of B).<\/p>\r\n\r\n<p>You may assume that there exists a path of white squares between the starting points of A and B.<\/p>\r\n","output":"<p>For each test case exactly one line should be printed to standard output containing a single character &rsquo;A&rsquo; or &rsquo;B&rsquo;, indicating the player who has a winning strategy.<\/p>\r\n","hint":"","original":"1","problem_lang_code":"\uc601\uc5b4"}]

출처

Olympiad > Baltic Olympiad in Informatics > BOI 2008 2번

  • 문제를 번역한 사람: author4