import sys

main() {
	x := 0

	if x == x && x != x || x != x && x != x {
		sys.exit(1)
	}

	if x != x && x == x || x != x && x != x {
		sys.exit(1)
	}

	if x != x && x != x || x == x && x != x {
		sys.exit(1)
	}

	if x != x && x != x || x != x && x == x {
		sys.exit(1)
	}

	if (x == x || x != x) && (x != x || x != x) {
		sys.exit(1)
	}

	if (x != x || x == x) && (x != x || x != x) {
		sys.exit(1)
	}

	if (x != x || x != x) && (x == x || x != x) {
		sys.exit(1)
	}

	if (x != x || x != x) && (x != x || x == x) {
		sys.exit(1)
	}

	if (x == x && x != x || x == x && x == x) && (x == x && x == x || x == x && x != x) {
		if (x != x || x == x) && (x != x || x != x) || (x == x || x != x) && (x != x || x == x) {
			sys.exit(0)
		}
	}
	
	sys.exit(1)
}