object Main {
 
	def iter(a1: List[String], a2: List[String], acc: Int): Int = {
 
		if(a2.length == 0) acc
		else if(a1.contains(a2.head)) iter(a1, a2.tail, acc+1)
		else iter(a1, a2.tail, acc)
	}
 
	def nOfEqual(a1: List[String], a2: List[String]): Int = iter(a1, a2, 0)
 
	def main(a: Array[String]) = {
		val file1 = scala.io.Source.fromFile(a(1), "utf-8").getLines.toList
		val file2 = scala.io.Source.fromFile(a(2), "utf-8").getLines.toList
		print("Copied "+nOfEqual(file1, file2)/file1.length.toDouble+"%")
	}
}

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