from zipfile import ZipFile


def human_read_format(size):
    if size < 1024:
        return f"{size}Б"
    elif size < 1024 * 1024:
        return f"{round(size / 1024)}КБ"
    elif size < 1024 * 1024 * 1024:
        return f"{round(size / (1024 * 1024))}МБ"
    elif size < 1024 * 1024 * 1024 * 1024:
        return f"{round(size / (1024 * 1024 * 1024))}ГБ"


with ZipFile('input.zip') as myzip:
    for i, j in enumerate(myzip.filelist):
        items = myzip.namelist()[i].rstrip("/").split("/")
        if myzip.namelist()[i][-1] == "/":
            print("  " * (len(items) - 1) + items[-1])
        else:
            print(f'{"  " * (len(items) - 1) + items[-1]} {human_read_format(j.file_size)}')