def calc_tax(price,tax)
  (price * (100 + tax) / 100.0).floor
end

while true
  x,y,s = STDIN.gets.split(" ").map(&:to_i)
  break if x == 0
  result = 0
  (1..1000).each do |i|
    (1..1000).each do |j|
      result = [result, calc_tax(i,y) + calc_tax(j,y)].max if calc_tax(i,x) + calc_tax(j,x) == s
    end
  end
  p result
end