use std::io::{Read, Write};

use anyhow::Context;

fn main() -> anyhow::Result<()> {
    let mut input = std::io::stdin().lock();
    let mut output = std::io::stdout().lock();

    let mut output_bytes = Vec::new();
    input
        .read_to_end(&mut output_bytes)
        .context("could not read stdin")?;

    let safe_utf8_content = String::from_utf8_lossy(&output_bytes);

    output
        .write_all(safe_utf8_content.as_bytes())
        .context("could not write to stdout")?;
    output.flush().context("could not flush")?;

    Ok(())
}