a, b = gets.split.map(&:to_i)

ans = nil
for x in 0..100 do
  for y in 0..100 do
    next if x == 0 || y == 0
    t1 = ((100 * x).to_f / (x + y)).round
    t2 = ((100 * y).to_f / (x + y)).round
    next unless t1 == a
    next unless t2 == b
    ans = x + y if !ans || x + y < ans
  end
end

puts ans