while true
  x, y, s = gets.chomp.split(" ").map(&:to_i)
  break if x == 0 && y == 0 && s == 0
  ret = 0
  (1...s).each do |i|
    (i...s).each do |j|
      i0 = i * (100 + x) / 100
      j0 = j * (100 + x) / 100
      if i0 + j0 == s then
        i1 = i * (100 + y) / 100 
        j1 = j * (100 + y) / 100
        ret = [ret, i1 + j1].max()
      end
    end
  end
  puts ret
end