main() {
	x := 0

	if x != x || x != x {
		exit(1)
	}

	if x != x || x != x || x != x {
		exit(1)
	}

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

exit(x) {
	syscall(60, x)
}