#!/usr/bin/env python
import sys
import click


def chop(container, start, end):
    if end is None:
        return container[start-1]
    return container[start-1:end-1]


@click.command()
@click.argument('start', type=int)
@click.argument('end', type=int, default=None, required=False)
def main(start, end=None):
    if sys.stdin.isatty():
        sys.stderr.write(f"this program only works with data from STDIN for now...\n")
        raise SystemExit(0x54)

    for line in sys.stdin.readlines():
        print(chop(line.split(), start, end))


if __name__== '__main__':
    main()