cf/mirror

The Wall (easy)

CF
690D11200· pupil0.5s256 MB⌨ stdin/stdout

Examples

Sample 1of 6
Input
3 7
.......
.......
.BB.B..
Output
2
Sample 2of 6
Input
4 5
..B..
..B..
B.B.B
BBB.B
Output
2
Sample 3of 6
Input
4 6
..B...
B.B.BB
BBB.BB
BBBBBB
Output
1
Sample 4of 6
Input
1 1
B
Output
1
Sample 5of 6
Input
10 7
.......
.......
.......
.......
.......
.......
.......
.......
...B...
B.BB.B.
Output
3
Sample 6of 6
Input
8 8
........
........
........
........
.B......
.B.....B
.B.....B
.BB...BB
Output
2
690D1.cpp
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Ln 11·137 BGNU C++20 (64)