A,B = gets.split.map(&:to_i)
if A == 0 || B == 0
    p 1
else
    sum = 2
    loop{
        1.upto(sum - 1){|a|
            b = sum - a
            if (a * 100.0 / sum).round == A && (b * 100.0 / sum).round == B
                p sum
                exit
            end
            }
        sum += 1
        }
end