#!/usr/bin/env python

import sys

while True:
	mask = 1
	value = 0

	for i in range(8):
		input = sys.stdin.read(1)
		if input == "": # EOF
			sys.stdout.flush()
			sys.exit(0)
		if ord(input) > 48:
			value = value | mask

		mask = mask << 1
	sys.stdout.write(chr(value))

sys.stdout.flush()