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use std::error::Error;
use std::io;
use bstr::{io::BufReadExt, ByteSlice};
fn main() -> Result<(), Box<dyn Error>> {
let stdin = io::stdin();
let mut words = 0;
stdin.lock().for_byte_line_with_terminator(|line| {
words += line.words().count();
Ok(true)
})?;
println!("{}", words);
Ok(())
}
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