import os
import sys


def get_sorted_ls(directory):
    listFiles = [f for f in os.listdir(directory) if os.path.isfile(os.path.join(directory, f))]
    filesList = []

    for file in listFiles:
        size = os.path.getsize(os.path.join(directory, file))
        filesList.append((file, size))

    return sorted(filesList)


if __name__ == "__main__":
    dir = sys.argv[1]
    print(get_sorted_ls(dir))