package main
import "fmt"

func abs(x int) int {
    if x < 0 {
        x *= -1
    }
    return x
}


func main() {
    inSquare := make([]int, 9)

    var s = [8][9]int{{8,1,6,3,5,7,4,9,2},
                    {4,9,2,3,5,7,8,1,6},
                    {6,1,8,7,5,3,2,9,4},
                    {2,9,4,7,5,3,6,1,8},
                    {4,3,8,9,5,1,2,7,6},
                    {8,3,4,1,5,9,6,7,2},
                    {2,7,6,9,5,1,4,3,8},
                    {6,7,2,1,5,9,8,3,4}}

    for i := range inSquare {
        fmt.Scan(&inSquare[i])
    }

    shortestDist := 1000
    var currentDist int

    for i := 0; i < 8; i++ {
        currentDist = 0
        for j := 0; j < 9; j++ {
            currentDist += abs(s[i][j] - inSquare[j])
        }
        if currentDist < shortestDist {
            shortestDist = currentDist
        }
    }
    fmt.Println(shortestDist)

}