# frozen_string_literal: true

MAX = 1000

# solve
#
# NOTE: `return...` and `(1..max)` is necessary
# in order to avoid zero division.
def solve
  return 0 if A.zero? && B.zero?

  (0..MAX).find do |max|
    (1..max).any? do |a|
      b = max - a

      a2 = Rational(100 * a, a + b).round
      b2 = Rational(100 * b, a + b).round

      A == a2 && B == b2 || A == b2 && B == a2
    end
  end
end

A, B = gets.split.map(&:to_i)

puts solve