def tax(rate,price)
  (price*(1+rate*1.0/100)).floor
end

while true
  x,y,s = gets.split(" ").map{|str| str.to_i}
  break if x==0 && y==0 && s==0

  maxprice = 0
  for i in 1..s-1 #??????1????¨??????????
    for j in 1..s-1
      if tax(x,i)+tax(x,j) == s
        price = tax(y,i)+tax(y,j)
        maxprice = price if price > maxprice
      end
    end
  end

  puts maxprice
end