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extern crate bstr;
use std::error::Error;
use std::io::{self, Write};
use bstr::{io::BufReadExt, ByteSlice};
fn main() -> Result<(), Box<dyn Error>> {
let stdin = io::stdin();
let mut stdout = io::BufWriter::new(io::stdout());
stdin.lock().for_byte_line_with_terminator(|line| {
if line.contains_str("Dimension") {
stdout.write_all(line)?;
}
Ok(true)
})?;
Ok(())
}
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