loop do
    x, y, s = gets.split.map(&:to_i)
    break if x == 0
    komi2nuki = Hash.new(-Float::INFINITY)
    (1..s-1).map do |n|
        k = n * (100 + x) / 100
        komi2nuki[k] = n
    end
    p (1..s/2).map {|u| komi2nuki[u] * (100 + y) / 100 + komi2nuki[s-u] * (100 + y) / 100}.max
end

