func ack() {
	n = n+1
	if($1 == 0) return ($2+1)
	if($2 == 0) 	 return (ack($1 - 1, 1))
	return (ack($1 - 1, ack($1, $2 - 1)))
}
n=0
while (read(x)) {
	read(y)
	print ack(x,y), "\n"
}
print n,"\n"
