n, k = gets.split.map &:to_i
if k == 0
	puts 1
else
	if n + 1 <= k
		puts 'INF'
	else
		bits = (0..30).select { |i| 2**i <= k && n[i] == 0 }.map { 2**_1 }
		puts [0, 1, 2].repeated_permutation(bits.size).count { |i|
				x = i.each_with_index.sum { _1 == 1 ? bits[_2] : 0 }
				y = i.each_with_index.sum { _1 == 2 ? bits[_2] : 0 }
				(0..k) === y - x
		     }
	end
end