require 'bigdecimal'

class ConsumptionTax
    attr_reader :d, :p

    def initialize(d: 0, p: 0)
        @d, @p = d, p
    end

    def datainput
        begin
            @d, @p = gets.chomp.split.map { |v| Integer(v) }
        rescue
            
        end
    end

    def tax_included_price(price, tax_rate)
        (BigDecimal(BigDecimal(price.to_s)*(1+BigDecimal((tax_rate*0.01).to_s))).to_s).to_f.floor
    end

    def dataoutput
        puts tax_included_price(@d, @p)
    end

    def run
        datainput
        dataoutput
    end
end

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