Everyone is afraid of something. Someone is afraid of darkness, someone is afraid of heights, someone is afraid of Vinnie Jones (all of us are afraid of Vinnie Jones), someone is afraid of singing before eating something…
There are many fears, but the greatest among all for Mirko is choosing a land for planting
strawberries. Mirko's land can be described as a matrix with
Since Mirko has troubles facing his fears, he asks you to only calculate the sum of all the fields' potential values.
Input
The first line contains two positive integers
The next .
(dot) which represents a field suitable for planting or a #
which represents weeds.
Output
Output the sum of all potential values of the matrix's fields.
Scoring
In test cases worth
In test cases worth additional
Sample Input 1
2 3
.#.
..#
Sample Output 1
8
Explanation for Sample Output 1
The following matrix describes the potential values of the land's fields. The sum of all potential values is
Sample Input 2
3 3
...
...
...
Sample Output 2
100
Sample Input 3
3 4
..#.
#...
...#
Sample Output 3
40
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