Problem
Given a sentence with words separated by spaces, count the number of words.
Input format
Input
input.txt
- A single line with a sentence (up to 100 characters)
Output format
Output
output.txt
- An integer: number of words
Example
input
this is a sentence
output
4
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Sample cases (from the problem)
Sample Case 1
Input
this is a sentence
Expected output
4
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