Counting a's (1) P97969


Statement
 

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Write a program that reads a sequence of characters ended with a period and prints the number of letters ‘a’ in the sequence.

Input

Input consists of a sequence of characters ended in a period.

Output

Print the number of times that ‘a’ appears in the sequence.

Public test cases

  • Input

    I am an instance with four a's.

    Output

    4

  • Input

    I just have one.

    Output

    1

  • Input

    Absolutely none.

    Output

    0
    • Information
    Author
    Salvador Roura
    Language
    English
    Translator
    Carlos Molina
    Original language
    Catalan
    Other languages
    Catalan
    Official solutions
    C++ Java Pascal Python
    User solutions
    C C++ Java Python Rust