class Howlong
    attr_reader :k, :s

    def initialize(k: 0, s: 0)
        @k, @s = k, s
    end

    def cause
        begin
            @k = Integer(gets.chomp)
            @s = Integer(gets.chomp)
        rescue
            
        end
    end

    def result
        puts ((@s * 100)/(100 - @k)).floor
    end

    def run
        cause
        result
    end
end

if $0 == __FILE__
    Howlong.new.run
end