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

ans = nil
for x in 0..200 do
  for y in 0..200 do
    next if x == 0 && y == 0
    next unless ((100 * x).to_f / (x + y)).round == a
    next unless ((100 * y).to_f / (x + y)).round == b
    ans = x + y if !ans || x + y < ans
  end
end

puts ans