object Solution {

    def main(args: Array[String]) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution
*/
        val magicSqrOfOrder: Int = 3
        val magicConstants: Int = 15

        var cost: Int = 0

        val rcType1:Array[Array[Int]] = Array(Array(4,9,2), Array(3,5,7), Array(8,1,6))
        val rcType2:Array[Array[Int]] = Array(Array(2,7,6), Array(9,5,1), Array(4,3,8))
        val rcType3:Array[Array[Int]] = Array(Array(6,1,8), Array(7,5,3), Array(2,9,4))
        val rcType4:Array[Array[Int]] = Array(Array(8,3,4), Array(1,5,9), Array(6,7,2))
        val rcType5:Array[Array[Int]] = Array(Array(8,1,6), Array(3,5,7), Array(4,9,2))
        val rcType6:Array[Array[Int]] = Array(Array(4,3,8), Array(9,5,1), Array(2,7,6))
        val rcType7:Array[Array[Int]] = Array(Array(2,9,4), Array(7,5,3), Array(6,1,8))
        val rcType8:Array[Array[Int]] = Array(Array(6,7,2), Array(1,5,9), Array(8,3,4))
            
        var rc:Array[Array[Int]] = Array.ofDim[Int](magicSqrOfOrder, magicSqrOfOrder)
        rc(0) = readLine().split(" ").map(_.toInt)
        rc(1) = readLine().split(" ").map(_.toInt)
        rc(2) = readLine().split(" ").map(_.toInt)

        def checkCost(rc:Array[Array[Int]], rcType:Array[Array[Int]]): Int = {
          var tmpCost = 0
          for(r <- 0 until magicSqrOfOrder){
            for(c <- 0 until magicSqrOfOrder){
              tmpCost += Math.abs(rc(r)(c) - rcType(r)(c))
            }
          }
          tmpCost
        }

        val listOfCost: List[Int] = List(checkCost(rc, rcType1), checkCost(rc, rcType2),
          checkCost(rc, rcType3), checkCost(rc, rcType4), checkCost(rc, rcType5),
          checkCost(rc, rcType6), checkCost(rc, rcType7), checkCost(rc, rcType8)).sorted


        println(listOfCost(0))
    }
}