object Main extends App {
	val k = scala.io.StdIn.readLine.split(" ").map(_.toInt)
	
	val N = k(0)
	val M = k(1)

	def pow(x: Int): Int = {
		x match {
			case 0 => 1
			case _ => 2*pow(x-1)
		}
	}

	println((1900*M + 100*(N-M))*pow(M));

}
