import sys, tty, termios

fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
while True:
	tty.setraw(sys.stdin.fileno())
	ch = sys.stdin.read(1)
	termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
	print ' %c' %  ch 
	if ch=='a':
		break
