Problem

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How many words in a sentence

Problem

Enter a character string from the keyboard and determine how many words it contains. A word is a sequence of non-whitespace characters separated by spaces on both sides (or standing at the end of a line). Words can be separated by multiple spaces. There can also be spaces at the beginning and end of the line.

Input: The first line is a sentence.

Output: you need to print one number - the number of words in the sentence.
 
Examples
# Input Output
1 Vasja      poshel          guljat 3