Length of Shortest Word

Given a string consisting of words separated by spaces, your task is to determine the length of the shortest word. If the string is empty or contains only whitespace, return 0.

Note: A word is defined as a sequence of non-space characters. In mathematical notation, you can represent the solution as: $$\min_{word \in S} |word|$$, where \(|word|\) denotes the length of the word.

inputFormat

The input is read from stdin and consists of a single line containing the string.

outputFormat

The output should be printed to stdout and is a single integer representing the length of the shortest word in the string.

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