#!/usr/bin/python

from __future__ import print_function
import sys
import termios
import tty


def main():
    fd = sys.stdin.fileno()
    old_settings = termios.tcgetattr(fd)
    try:
        tty.setraw(sys.stdin.fileno())
        r = sys.stdin.read(5)
    finally:
        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
    print('r = %r' % r)


if __name__ == '__main__':
    main()