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Лимит времени 2000/4000/4000/4000 мс. Лимит памяти 65000/65000/65000/65000 Кб.
Сложность Альфа
Most modern text editors are able to give some statistics about the text
they are editing. One nice statistic is the average word length in the text.
A word is a maximal continuous sequence of letters ('a'-'z', 'A'-'Z').
Words can be separated by spaces, digits, and punctuation marks.
The average word length is the sum of all the words' lengths divided by
the total number of words.
For example, in the text "This is div2 easy
problem". There are 5 words: "This"is"div"easy" and "problem". The sum of
the word lengths is 4+2+3+4+7 = 20, so the average word length is 20/5 = 4.
Given a text, return the average word length in it. If there are no words
in the text, return 0.0.
Input
The first line will contain the text of length between 0 and 50 characters
inclusive. Text will contain only letters ('a'-'z', 'A'-'Z'), digits
('0'-'9'), spaces, and the following punctuation marks: ',', '.',
'?', '!', '-'. The end of text will be marked with symbol '#' (see
examples for clarification).
Output
Output should contain one number - the average length. The returned
value must be accurate to within a relative or absolute value of 10-9.
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Input 1
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Input 2
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Input 3
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This is div2 easy problem.#
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a bc#
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w84lFC1hD2ot2?43 Jnw67Kmt8KhOQn#
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Output 1
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Output 2
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Output 3
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4.0
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1.5
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2.714285714
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Для отправки решений необходимо выполнить вход.
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