Some cells have been removed from a rectangular sheet of checkered paper (M rows, N columns). How many pieces will the rest of the sheet break up into? Two cells do not fall apart if they have a common side.
Input
The first line contains the numbers M and N, the following M lines contain N characters. If the cell has not been cut out, this corresponds to the # sign, if it is cut out - a dot. 1 <= M, N <= 100.
Output
Output one number.
Examples
| # |
Input |
Output |
| 1 |
5 10
##..#####.
.#.#.#....
###..##.#.
..##.....#
.###.#####
|
5
|