<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">import os

if __name__ == '__main__':
    buf = os.read(0, 1024)
    os.write(1, b'OUT:'+buf)
    os.write(2, b'ERR:'+buf)
</pre></body></html>