Horizontal lines P74306


Statement
 

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Your task is to write a program that computes the number of horizontal lines contained in a given rectangle of characters. We consider that an horizontal line is a sequence of two or more dashes consecutive horizontally.

Input

The input starts with two naturals n ≥ 1 and m ≥ 1, followed by n lines, each one with m ‍characters. All the characters are dashes and lowercase letters.

Output

Your program must print the number of horizontal lines contained in the given rectangle.

Public test cases

  • Input

    4 10
bb--cd----
a--f--d--d
abcdefghij
---z------

    Output

    7

  • Input

    3 3
-a-
a-a
-a-

    Output

    0

  • Input

    1 2
--

    Output

    1

  • Input

    5 1
-
a
-
b
-

    Output

    0
    • Information
    Author
    Salvador Roura
    Language
    English
    Translator
    Carlos Molina
    Original language
    Spanish
    Other languages
    Spanish
    Official solutions
    C++
    User solutions
    C++