extern crate bstr;
use std::error::Error;
use std::io;
use bstr::io::BufReadExt;
fn main() -> Result<(), Box<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(())
}