시간 제한메모리 제한제출정답맞힌 사람정답 비율
1 초 128 MB44432377205354.717%

문제

푸르고 아름다운 남해에는 많은 섬이 장관을 이루고 있다. 그림이 아니면 볼 수 없을 것 같은 아름다운 장관을 실제로 볼 수 있는 다도해로 상근이는 여행을 떠났다.

다도해에 도착한 상근이는 서울에서 보던 것과는 다른 풍경에 큰 충격을 받았다. 지구 온난화로 인해 해수면이 상승해 섬의 일부가 바다에 잠겨버렸다.

서울로 다시 돌아온 상근이는 이렇게 지구 온난화가 계속 될 경우 남해의 지도는 어떻게 바뀔지 궁금해졌다.

다도해의 지도는 R*C 크기의 그리드로 나타낼 수 있다. 'X'는 땅을 나타내고, '.'는 바다를 나타낸다.

50년이 지나면, 인접한 세 칸 또는 네 칸에 바다가 있는 땅은 모두 잠겨버린다는 사실을 알았다.

상근이는 50년 후 지도를 그려보기로 했다. 섬의 개수가 오늘날보다 적어질 것이기 때문에, 지도의 크기도 작아져야 한다. 지도의 크기는 모든 섬을 포함하는 가장 작은 직사각형이다. 50년이 지난 후에도 섬은 적어도 한 개 있다. 또, 지도에 없는 곳, 지도의 범위를 벗어나는 칸은 모두 바다이다.

입력

첫째 줄에 지도의 크기 R과 C (1 ≤ R, C ≤ 10)가 주어진다. 다음 R개 줄에는 현재 지도가 주어진다.

출력

50년 후의 지도를 출력한다.

예제 입력 1

5 3
...
.X.
.X.
.X.
...

예제 출력 1

X

예제 입력 2

3 10
..........
..XXX.XXX.
XXX.......

예제 출력 2

.XX...X
XX.....
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출처

Contest > Croatian Open Competition in Informatics > COCI 2012/2013 > Contest #5 2번